Oracle get column names from query. table_name r_table_name, c_pk.

Oracle get column names from query Hmm. declare col_name varchar2(100); col_val varchar2(100); TYPE column_table_type IS TABLE OF COLUMN_TABLE%ROWTYPE; column_table column_table_type ; begin SELECT * BULK COLLECT INTO column_table FROM COLUMN_TABLE; for data_table in (select * from c7. My oracle select table_name from all_tab_columns where column_name = 'PICK_COLUMN'; Or if you have DBA privileges, select table_name from dba_tab_columns where column_name = 'PICK_COLUMN'; But if you are not sure about the column names you can add LIKE statements to current query. Ravi Ravi. owner = s. all_tab_columns c ON t. Passing column name as parameter in Oracle PL_SQL function. @Entity @IdClass(TableMetadataKey. You can get all column names from cursor. e to trim spaces, you need. To shows the tables that do not have column_name=object_no, I tried with the SQL query below. Share. data_type, all_tab. id = t2. The query below, in the middle column (str), has the data the way you requested it. GetFieldType(col). Database is Oracle not MSSQL. If you wish you may convert this to a TABLE function which returns the column names for any given query to simplify things for you. Then after running the Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Marko Goricki Oct 27 2010 — edited Oct 27 2010. jack from table1 A, table2 B, table3 C; Scope of rows: (A) all columns of a specific table accessible to the current user in Oracle database, (B) all columns of a specific table in Oracle database; Ordered by column sequence number; Sample results. class) @Table(name = "table_metadata") class TableMetadata { @Column(name = "column_name") @Id String columnName; @Column(name = "table_name") @Id String tableName; public B) Querying data from multiple columns. Add a comment | Your Answer Get list of columns and alias name by a query string in Oracle. Its funny because I just had to use the DBMS_SQL package to get query column data for a project. rowid_object(a. description returns a list of 7-element tuples you can get the 0th element which is a column name. select dbms_metadata. Get result data from procedure call cx_oracle python. constraint_catalog = ccu. ToString()); // Gets the column type A First Look at Oracle and “PL/SQL Developer” for Microsoft SQL Developers; Intro to Oracle for SQLServer Developers and DBAs – Part 2; T-SQL Query to Find a Given Column Name (or Like-Column) From All Tables in a Database; Comparing “Create Table” between Oracle and Microsoft SQLServer INFORMATION_SCHEMA. Follow You can query the all_tab_columns view in the database. VALUE || ' '; v_counter := 1; In Oracle (atleast 11g) database : If you hit. emp, B. Print the data in ResultSet along with column names. Columns (for tables) All columns are in form {alias}_{colname}. table_name=‘attributeproperties’ and c1. And can the query below only retrieve the tables in a Consider a very simple example I want the column names fetched by following SQL; select * from db. Add a comment | 3 Get Column names from a query without data. column_id=3 There is no "option" in Oracle to do this; you may be able to find a client that allows you to do so as this is a job that would normally be done in the client; I don't know of one. ). My boss wants me to create an admin version of a page we have that displays data from an oracle query in a table. owner, c. 0 compliant clients, cursor. I want an Oracle sql query, which on runtime gets all COLUMN_NAMES from a particular TABLE and then use those COLUMN_NAMES to fetch value from each ROW,considering that I don't know the number and name of COLUMNS within the TABLE. Thanks . ResultSetMetaData classes getColumnName() or getColumnLabel() Not sure how you can get column name but table name you can get using following SQL: select o. How to get query U can get column name and value from resultSet. How to dynamically pass column names to a query? 1. Viewed 63k times in oracle. constraint_name = c. SELECT col. Get column names stored in a different table. 2. Ask Question Asked 13 years, 4 months ago. constraint_schema and Given a query, I want to extract all the column names/aliases in the query in a case-sensitive way. PKirby PKirby. Commented Jul 15, 2015 at 9:29 @StefanYordanov , I Using oracle OCCI is it possible instead of supplying an index for the column when requesting data from a query resultset, to actually pass the column name and get the data? So instead of doing: (pseudocode) std::string query = "SELECT NAME FROM CUSTOMERS;"; std::string myresult = oracle. When i copy the result set in Oracle SQL Developer to excel only the data gets copied. Retrieving column names from a table without using ResultSetMetaData. table_name and c2. ename, dept. class); String[] propertyNames = classMetadata. COLUMN_ID; I get a SINGLE list of columns. So, as a first step, I thought, I will first need to get all the schema details (tables and relationships between tables, constraints also maybe). Follow edited Feb 16, 2015 at 7:14. all_tables t INNER JOIN sys. Follow All_Columns_YN indicates whether the query can be written as SELECT * or whether you need to query the column names from the data dictionary How to column value as column name dynamicaly in oracle plsql query. However, without the info in the first and/or the last column, it is not clear how you will know which values are table names and which are columns under them. com. select COLUMN_NAME from ALL_TAB_COLUMNS where TABLE_NAME='MYTABLE'; Share. Yes, you could make use of dbms_sql. column_name from sys. Name as Field_Name , t. 1. See TO_CHAR for the conversion syntax. Get column names from query(not from table) 2. Thanks in advance I know its an old thread but this may help some one. Hot Network Questions Strange release name listed by apt? Not a Single Solution! Formal Languages Classes Can I I am trying to get all column names at a time using database query. Write(SqlReader. 455 3 3 gold badges 7 7 silver badges 18 18 bronze badges. xtype = c. google dynamic pivot/unpivot for oracle, you will get many results. TABLE_NAME inner join cols How can I get all columns' names from an Oracle table using Java? Is there a way to get them from DatabaseMetaData object? DatabaseMetaData myDatabaseMetaData = myConnection. --Table-3 has the right column but not the right value. From those docs:. ALL_TAB_COLS will will all that your session users has privileges on, including its own tables. table_name, a. table_name, c. Select COLUMN_NAME from user_tab_columns where table_name='EMP' Use it in your code :) Share. select to_char(SYSDATE,'Month') from dual; It gives unformatted month name, with spaces, for e. This guarantees that column names are unique in a schema, except denormalized columns from another table, which are populated using triggers or application logic. column_name from information_schema. describe_columns2 but only I get alias. When working with a database, it is often necessary to retrieve information about the tables, such as column names. columns' ). Also the value can only be either be 0 or 1) Oracle query to gets all COLUMN_NAMES during run-time and then fetch value from each ROW w. getClassMetadata(AppTaskConfig. 3. PARTITIONS WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? limit 1 this query will give me partition column name, same output I want in oracle . However, here too you only get the data. cursor() result = curs. name Share Improve this answer How to find column name contains particular string value in my table sku_config using oracle. ALL_TAB_COLUMNS is a view in Oracle that contains the information about all columns in all table. My question is, is it possible to actually use those column_names in a query? I can get the column names like this: SELECT column_name FROM user_tab_cols WHERE table_name = 'MY_TABLE' But it just returns a list of column names I cannot do anything with. curs = cxn. The as is column names are known to me but rest are dynamic columns so there are not known beforehand. Yes, you could copy out the result set WITH the column headers, but maybe you I need to get the specific column value from rowtype variable. constraint_type 6 FROM user_cons_columns A, 7 user_constraints b 8 WHERE A. constraint_schema = ccu. – Daniel Sh. COLUMN_NAME = all_tab. SUBOBJECT_NAME AS "PARTITION_NAME_1" FROM table_sample sw, SYS. Hot Network Questions On a light aircraft, The text file has to be read (probably using text_io package), the SQL query needs to be parsed and the column names, table names and where clauses have to be extracted and inserted into separate tables. So if I am in schema scott it should only show all the tables present in scott. And I want to do that in one query. 2 and I've got an Oracle 11g database with a read-only account. How to iterate through column names in Oracle PL/SQL? 0. Please help me. prec as Precision_ FROM syscolumns c INNER JOIN sysobjects o ON o. 0. select table_name from all_tab_columns where column_name = 'PICK_COLUMN'; Or if you have DBA privileges, . deptno You need to query the data dictionary, specifically the USER_CONS_COLUMNS view to see the table columns and corresponding constraints:. empno, emp. example: cursor blah is select A. SELECT COLUMN_NAME FROM USER_TAB_COLUMNS WHERE table_name = 'TBL_NEWS' AND COLUMN_NAME LIKE ('GLOBE_%') ORDER BY COLUMN_ID I have a synonym and I need to get all column names of that synonym also. owner AND How to get query column names from query programmatically? E. owner, atc. * from <table_name> a inner join user_objects o on o. The Oracle SQL contains a table named all_tab_columns that Pulling togetehr comments, you can use dbms_sql to parse (but not execute) the target query, and describe the result set columns to get the information you need. name = 'TableName' order by c. text,chr(9)||' ') not like '--%' and . for example my string is TRP , I need to find the column name that is having value 'TRP' in mytable. TABLE_NAME = C3. sys. Improve this answer. owner, 2 A. In order to format month name, i. Follow edited May 23, 2017 at 12:24. select s. describe_columns. hibernate. id LEFT JOIN systypes t on t. I have a query and I need to get the names of its columns without having to hard code them. Consider this example: // user bob owns table STUDENTS grant select on students to josh; // now josh logs in, normally he would do describe bob. The USER_TAB_COLS view shows objects owned by the logged-in user, whereas ALL_TAB_COLS shows all objects available to the user given his permissions and DBA_TAB_COLS shows everything in the database irrespective of I am getting all the column names in a table using: SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS WHERE TABLE_NAME='<TABLE_NAME>' AND OWNER = '<SCHEMA>' I am calling this same sql statment on an identical table in a different database, but getting the results in a different order. Every SQL statement must be parsed by calling the PARSE procedures. The string May will have spaces. SELECT customer_id, name, credit_limit FROM customers; Code language: SQL (Structured Query Language) (sql). Can any one suggest me. (so I can copy paste the list elsewhere) edit: The advantage of this approach is that you can get type information along with the column names. Modified 10 years, You get the column name into a local variable from table1, and use it to create a dynamic SQL statement to select that column from table2. Then after running the query i get only id,name, address only. I am trying to fetch column names form Table in Oracle. Thank you! Getting the column header name in a query result set. Information_schema. DBA_TAB_COLS will show cols for every table. constraint_name, ccu. In our db, I see that the definition of the MV matches the columns of the table. 879 3 3 gold badges 16 16 silver badges 38 38 bronze badges. rowid); Return column name dynamically does not make sense because you always define columns statically in SQL (except * syntax). This query may select from any tables or joined tables in my DB, and the column names and number of columns are unknown. This is my requirement. Elaboration: Table Name: Some_Table have 10 columns. TABLE_NAME and t. Let's say I have tables . I can create a view for each type with all columns, then use all_tab_columns to get all column names where the "num_nulls" is less than the total number of rows for that specific type. That is how I'm getting the list of tables. select table name and press Alt+F1. type, s. constraint_name FROM ALL_CONS_COLUMNS acc INNER JOIN ALL_CONSTRAINTS Source : Oracle query to fetch column names. synonym_name FROM all_tab_columns atc LEFT JOIN all_synonyms s ON (atc. To obtain column names from tables or views on an Oracle database server, run a short query using the most appropriate data-dictionary object. SELECT COLUMN_NAME FROM USER_TAB_COLUMNS WHERE TABLE_NAME='TABLE_NAME'; 2. g Query: select ename as name, empno, job from EMP t Column names: name, empno, job If you are using SQL*Plus, displaying or not displaying column names is a setting you control with the SET command. I have a function called 'MyFunction' that returns one and only one column name from 'MyTable' such that SELECT MyFunction(1,0) FROM DUAL; might return 'c4'. line, s. The 2nd one returns data of all the columns from the table. SELECT * FROM user_cons_columns WHERE table_name = '<your table name>'; FYI, unless you specifically created your table with a lower case name (using double quotes) then the table name will be To obtain column names from tables or views on an Oracle database server, run a short query using the most appropriate data-dictionary object. Depending upon the Excel file, I got the column names in a page item (P1_COLUMN_NAMES) in a comma separated string (e. SELECT column_name FROM Here, the query selects the column_name column, filtered for the ‘EVENT_LOG’ table. Although the column names and types are available after compiling, I am not aware of a way to get them without also executing the query. column_id=1 and c1. columns c on t. The following example shows how to query data from the customer_id, name, and credit_limit columns of the customer table. I used Many query's, And Find may query's in Stack overflow But I didn't get answer. 4. Playing with Florin's query, if I have an index on DHW_ACCOUNTS(ACC_SOURCE_ID, ACC_PT_KEY) then plan display shows it doing a range scan on that index and doesn't say it hits the table; but my query still shows both This means you're out of luck anyway trying to map back the results to the query BUT you can simply use the object's field names as column names. Count property of the GridView to get the HeaderNames, passed same into a This is the columns rule defined for oracle. column_id=2 and c2. owner) = LOWER('MySchemaNameHere') AND LOWER(c. This can be changed at any time. This will display the column names, data types, and sizes of the columns in the table. constraint_catalog and tc. object_id = dbms_rowid. table_name; I need to run a query on generated generated column names. Improve this question. TABLE_NAME; TABLESPACE_NAME -->> Name of the tablespace containing the table; null for partitioned, temporary, and index-organized tables. name = What you want can however be achieved through a few hops. To get the column names, first you need to find the properties of the entity using org. oracle-database; plsql; Share. Whether Scope of rows: (A) all columns of tables accessible to the current user in Oracle database, (B) all columns in tables in Oracle database; Ordered by schema name, table name, column sequence number; Sample results. I think I was looking for something You can use below query to get the column names, SELECT COLUMN_NAME FROM COLS WHERE TABLE_NAME = 'your_table_name'; Provide table name in the WHERE condition You can also describe table to know their constraints, data type and length using, DESC your_table_name; I know that I can do this to get the column names from some table: SELECT COLUMN_NAME FROM ALL_TAB_COLS WHERE TABLE_NAME = 'MY_TABLE' But what if I want to do something like this (bit of pseudo code): use sys. owner AS schema_name, t. column_name, 5 b. 2. Oracle query to fetch column names. SELECT acc. r_owner = c_pk. column_name from all_ind_columns a, There is a way to get all the column names of a query, using dbms_sql. select ccu. Note description will be None if the result of the execute statement is empty. table_name=c2. students; // but he's looking for something along the lines select column_name You could use the query: select COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, DATETIME_PRECISION, IS_NULLABLE from INFORMATION_SCHEMA. answered Jul 15, 2015 at 9:27. Need to build a query with column names stored in another table. From there it should be easy to gather columns that are used for each type and create the views. Hot Network Questions Locating TIFF layers without displaying them Movie about a schoolboy who tries to get detention to avoid an after-school fight Trying The data you want is in the "cols" meta-data table: SELECT * FROM COLS WHERE COLUMN_NAME = 'id' This one will give you a list of tables that have all of the columns you want:. Good point about the indexes. Follow SQL> column owner format a6 SQL> column constraint_name format a10 SQL> column table_name format a10 SQL> column column_name format a10 SQL> SELECT A. Given a procedure like the following: create or replace procedure so50399550 ( a_Input1 number, a_Input2 number, a_Output out sys_refcursor ) is begin open a_Output for select a_Input1 as num, a_Input1 * a_Input1 as square from dual union all select a_Input2, a_Input2 * a_Input2 A simple query like this helps you to know each column name of a table in Oracle. parse, but couldn't see a way to get the table info. – user4974662. However it's not really straightforward to access a column by name because the DBMS_SQL package uses positioning and in a dynamic query we may not know the order of the columns before the execution. Fetching variable columns in PLSQL. name FROM <db_name>. description] Since cursor. How to get the data for the dynamic column name in oracle APEX. How I can do that? The goal: to populate with data all tables at once, that has the names that similar with values in table name column from main table. name, s. Hot Network Questions How can I create an asterisk where f. 4) Thanks, Shaz I believe that the MV came first and then the developers switched over to using traditional table type object. FieldCount; col++) { Console. Inside this CLOB can be a SQL statement. If a column was a non-varchar2 type then you'd need to cast the second SELECT result to VARCHAR2. Another way is to query the data dictionary views such as ALL_TAB_COLUMNS or USER_TAB_COLUMNS to retrieve information about the columns in Simple Query using a function for a column name I have a table named 'MyTable' it has columns c1,c2,c3,c4,c5. This does not mean that you have to list every column. 1 1 1 silver badge. I want the list of columns as an Array in PHP. Setting column values as column names Is there any way to get the values a. Sounds pretty easy query the column names from a table, right? Indeed there is a answer to this question How can I get column names from a table in Oracle? The main issue is that the table belongs to another user. object_id = c. 4k 43 43 gold badges 122 122 silver badges 180 180 bronze badges. Short and sweet post today – let’s say you’ve written a SELECT *, and your query results have some column headers you want to copy out. USER_OBJECTS uo WHERE sw. You can use this simpler query to select column names used in any view. select distinct C1. The Fetching Column Names with Oracle Query. The other query can be anything - I can't make any assumptions about it but it will typically be some SELECT statement. COLUMNS where TABLE_NAME='TableName' to get all the metadata you require except for the Pk information. GetName(col). Ex:-- Emp_table: id name address-----1 jack US. columns to query the column names for your tables. table_name WHERE LOWER(t. *I have no ability to actually create this table, so making it and then running the ordinary query isn't an option. pl-sql include column names in query. description and use zip() function to construct a list of dicts: Retrieving column names from ref cursor with cx_Oracle. col1, or a. You can get any synonyms for tables you can see thusly: SELECT atc. 5. get_ddl('table', 'item_commit_agg', 'intamps') as ddl from dual; sql> desc all_tab_columns; name null? type ----- ----- ----- owner not null varchar2(30) table_name not null varchar2(30) column_name not null varchar2(30) data_type Use the Oracle dictionary views ALL_CONS_COLUMNS or USER_CONS_COLUMNS (if you want to restrict it by column type - i. I want to get a list of columns with alias by a query string. So now is it possible to extract all the columns names from the dynamic query being generated ? I am using Oracle 11g (11. If the column aliases are wrapped in double-quotes, SQL Developer will use those exact values as the column names in the query results: SELECT name AS "CandidateName", age AS "CandidateAge" FROM tbl_candidate_details ORDER BY candidate_id DESC; Otherwise, the column names in the query results are always displayed in upper case This SQL query : SELECT a. h when i run this query, oracle tells me "table not found in schema", and yes the parameters are correct. Step 1: Define an entity class that will hold metadata information. constraint_name, c. text from user_source s where ltrim(s. To get column names in an Oracle SELECT statement, you can use the DESCRIBE command followed by the table name. Note that all of this is only in the front-end (in SQL*Plus); Oracle returns the column names and the values, but you can instruct SQL*Plus to display or not to display the column names. same query working in MySQL: SELECT PARTITION_EXPRESSION FROM INFORMATION_SCHEMA. You would use the data dictionary, specifically all_tab_columns How to Get Column Names of a Table in Oracle Query. *, s. For example, I want to get the list of all columns of the following SQL: SELECT emp. – Stefan Yordanov. Now with this query string as the only input, I want to fetch all data from the result and output them line by line, is there any way to do this ? I want to query the column_name=object_no in the multiple tables ( up to 100 tables). I know i can use dba_tab_columns to get the column information of a table but i want a way to include it in the row format with the result. getPropertyNames(); Pl/SQL- Get column names from a query. To query data from multiple columns, you specify a list of comma-separated column names. How to get total number of columns, column name, data type of a I have to get some columns as is and some columns from a query as JSON document. col2 with alias in the query get_columns_name('select a. how to get list of columns of an record type or list of columns Thanks, I tried this method alongside with the others in the answers to my question but I got only the COLUMN NAME header as my result. views vew WHERE col. select to_char(SYSDATE,'fmMonth') from dual; This would return 'May'. t1,db. table_name=c3. all_tab_columns c3 on c2. answered Feb 16, 2015 how to get size of table field trough oracle Query. ToString()); // Gets the column name Console. Community Bot. SELECT column_name FROM all_cons_columns WHERE constraint_name = ( SELECT constraint_name FROM all_constraints WHERE UPPER(table_name) = UPPER('tableName') AND CONSTRAINT_TYPE = 'P' ); Try This Code Here I created a table for get primary key column in oracle which is called test and then query. TABLESPACE_NAME, b. object_id = vew. t2 where t1. Use the following. index_name, a. createSQLQuery(sql). column_name) LIKE I've checked Oracle query to fetch column names, but that doesn't seem to help because I'm not trying to find the names from an existing table*. But facing difficulties to get column names from such scenario. Example: SQL> SELECT table_name, 2 comments 3 FROM dba_tab_comments 4 WHERE owner ='OE' 5 AND table_name='INVENTORIES'; In Oracle SQL, there is a very effective way to get the column names of a table. Let's say i have a table called access which has only one row at all times, but differs from one schema to another. I am trying to get all column names at a time using database query. I'm using Talend Open Studio for Data Integration 6. select table_name, column_name, data_type, NVL(char_col_decl_length, data_length) from user_tab_columns where table_name='T51_NOCOMP'; Share. The year value in the result set is guaranteed to be the same for all records. For example: I have an Oracle table that has a CLOB in it. The following will work for a table or a view: SELECT UPPER(name) FROM sys. I need a query that will get the column names of the result of another query. Below is the Skip to main content. owner=‘gdosys’ join sys. getMetaData(); This code work for me: Returning just column names of ResultSet without actually performing the query (Oracle and Java) 62. Here's the query: select 'col_'||4 from MY_TABLE Note: "4" is a variable that is passed to this query from within the Java code MY_T select a. I jotted down the following query which will list the index name and its columns for a particular table: select b. table_name = c. See below query for how to get all columns with the given name for a specific schema in Oracle: SELECT t. col1 column1, a. I'm thinking this is impossible, but here was my You need to add column name connection: SELECT all_tab. Thanks. Get this interactive HTML data dictionary in minutes I want to know the Query that allows us to view all the columns that are defined for a table in oracle database. TABLE_NAME = 'MY_TABLE' Is there a way to get the name of the column based on its value. I want to get the table result set's 1st record should have the The columns for the ref cursor can be determined from the ref cursor itself. I want a query in oracle to get the column name from the table by passing value. describe_columns2. There is a way to get all the column names of a query, using dbms_sql. 0. constraint_name r_pk FROM all_cons_columns a JOIN all_constraints c ON a. The syntax to retrieve column names using the ALL_TAB_COLUMNSview is as follows: This query retrieves the names of all columns in a tabl In Oracle SQL, there is a very effective way to get the column names of a table. . Using cx_Oracle, I am selecting data from an Oracle database. But, depending on the C# library you use to run the query, you should be able to see the names/aliases of the query columns Scope of rows: (A) all columns of tables accessible to the current user in Oracle database, (B) all columns in tables in Oracle database; Ordered by schema name, table name, column sequence number; Sample results. select table_name from dba_tab_columns where column_name = 'PICK_COLUMN'; I have a specific query with joins and aliases, and I need to retrieve columns name for a REST request in Talend. not column names. Is there a way to do it using PL/SQL ? Is there a PL/SQL script available to parse and extract column names, table names etc ? Pls help The text file has to be read (probably using text_io package), the SQL query needs to be parsed and the column names, table names and where clauses have to be extracted and inserted into separate tables. So how can I extend above query to get --This is another variation used to document a large database for conversion (Edited to --remove static columns) SELECT o. column_name, a. For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle. data_length, (SELECT COMMENTS FROM user_col_comments t where t. IMHO you shouldn't use INFORMATION_SCHEMA for any of this. Is there a way to do it using PL/SQL ? Is there a PL/SQL script available to parse and extract column names, table names etc ? Pls help I want to use the result from subquery as the column name of another query since the data changes column all the time and the subquery will decide which column the current forcast data stored. e. 31. You can select column names from table oracle database ** table name is upper ** select column_name from user_tab_cols where table_name =’PS_JOB’; SELECT COLUMN_NAME FROM ALL_TAB_COLS WHERE TABLE_NAME =’PS_JOB’; SELECT COLUMN_NAME FROM A weird request maybe but. I want to know how I can retrieve the all column names, their data type, and any constraints that are defined for any column. SELECT * FROM myTableName@myDbLink; Oracle: Get column name based on a value in a table. Thank you in advance. table_name) ORDER BY atc. If you want to create a list of the column names, you I am newbie in oracle and i want to get partition column name form partition name. Get column names of the result of a query Oracle SQL. For example. Follow asked Jun 4, 2015 at 6:40. table_owner AND atc. owner 9 AND I want to retrieve column names from a table through a db link but I'm not able to do it Although this query is working SELECT * FROM myTableName@myDbLink; the following one is not: SELECT Although this query is working. How can I write a query to return the column names? I trie For example, I find particular table name, selecting id. I need to query the database to get the column names, not to be confused with data in the table. column_name having count(*) > 1) order by column_name desc; If you can see the table a synonym points to, then selecting from all_tab_columns gets you what you want. I am currently trying to dynamically run these SQL statements and return the column names and data back. column_name) FROM all_tab_columns all_tab WHERE all_tab. TABLE1: COLUMN_1, COLUMN_2, COLUMN_3, COLUMN_4 value11 value12 value13 The text file has to be read (probably using text_io package), the SQL query needs to be parsed and the column names, table names and where clauses have to be extracted and inserted into separate tables. getMetaData(); I know I can get them using a select statement: Select COLUMN_NAME from user_tab_columns where table_name='MYTABLE' If it is possible to You can use the package DBMS_SQL to create and access cursors with dynamic queries. uniqueness, a. execute(SELECT FirstName, LastName FROM Person) Is there a way to return only the firstname without numerical index? For example: for row in result: result[0] #will return the first column When you Open cursor number 2, you FETCH get_columns into the column_name variable, you should add the other one too (data_type). it surely works but I wanted to know if oracle JSON supports dynamic column conversion either ways meaning converting SQL> select num_rows from all_tables where owner='SCOTT' and table_name='EMP'; NUM_ROWS ----- 14 SQL> select column_name,nullable,num_distinct,num_nulls from all_tab_columns 2 where owner='SCOTT' and table_name='EMP' order by column_id; COLUMN_NAME N NUM_DISTINCT @Aleksej - yes, I wondered about using dbms_sql. This involves querying the data dictionary, which is a set of tables and views that contain metadata about the database itself. Your pipeline table function will use the Oracle Data Cartridge interface and the magic of the AnyDataSet type to return a dynamic structure at runtime. My sample code is . Ideally you'd have a list of the columns you were SELECT'ing with DBI, and you'd use that array. variable as column name in where clause in Oracle PL/SQL. constraint_name JOIN all_constraints c_pk ON c. Name as Table_Name , c. TABLE_NAME from cols c1 inner join cols c2 on C1. Commented Dec 22, 2017 at 9:58. object_name, a. Construct the query dynamically from the resultant string in PL/SQL. And then I want to populate table with that name with data. Good timing! – OldProgrammer. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog The 1st query returns the names of all the columns except the one I want to avoid. Ask Question Asked 10 years, 7 months ago. TABLE_NAME=b. Parsing the statement checks the statement's syntax and associates it with the cursor in your program. column_name from table ing group by ing. You can use list comprehension as an alternative to get the column names: col_names = [row[0] for row in cursor. all_tab_columns c1 join sys. r_owner, c_pk. num, C. table_name r_table_name, c_pk. To expand upon tbone's answer you're going to have to do this dynamically. Sample Schema--Table-1 and Table-2 match the criteria. Also i do not want to hard code the column names I want to retrieve all table names and column names IN A SCHEMA. id = c. getString(1); // name column in query you'd do this: Define your column names in an ARRAY before your SELECT. name from sys. For example, if I have a table named EVENT_LOG that contains eventID, eventType, In Oracle SQL Developer, You can get the column names by opening the table Method 1: ALL_TAB_COLUMNS. deptno FROM emp INNER JOIN dept ON emp. owner = c. r. Grant McKinnon Grant McKinnon. table_name and c3. I am new to oracle. 3408387 May 25 2017 — edited May 26 2017. deptno = dept. ClassMetadata:. I'll leave that as an exercise for you ! With this query I can successfully get a list of column names for an Oracle table. metadata. column_name FROM sys. You can try this via SQL tool that is used by you. So my end result should be a sql statement in oracle which when run, will give me a comma separated list of column names in a given table. The admin page, instead of displaying the data (query returns 1 row), needs to return the table name and column name I'd like to get all foreign keys in a schema, like this. g. description is a sequence of 7-item sequences of the form (<name>, <type_code>, <display_size>, <internal_size>, <precision>, <scale>, <null_ok>), one for each column, as described here. How to print the whole column from You can refer to this oracle doc for information Datatype Code or this for a simple mapping Oracle Type Code Mappings. constraint_name, 3 A. SELECT 'colname1', 'colname2', 'colname3', 1 AS ordering FROM dual UNION SELECT colname1, colname2, colname3, 2 AS ordering FROM yourtable The reason for the simplicity is that as far as clients are concerned queries ie SELECT queries, ie non data defining or data manipulation queries, whether on tables, views, or other queries return rows and columns of data, so PostgreSQL should be able to return a list of the column names and their data types. object_id AND vew. Here is the important part: for (int col = 0; col < SqlReader. each column. Oracle SQL: Get value from column where column name comes from a another table. This answer uses an extract of the code borrowed from here. This is to be used to dynamically create a table on the web page. TABLE_NAME inner join cols c3 on C2. SELECT * FROM vwGetData WHERE ROWNUM <=0 you can get all column list. customerno' || ' FROM DUAL)' || ' GROUP BY branchname'; OPEN v_cursor FOR v_sql; FOR v_record IN get_columns LOOP IF v_counter = 0 THEN v_column := v_column || v_record. @YCF_L: if I knew before hand, I wouldn't have this problem, as I would know the column names ;) As I wrote in the question, this is for an administrative console where administrators can type any SQL SELECT query and have the results printed on a table. If you need to print other columns of the table while checking for duplicate use below: select * from table where column_name in (select ing. Retrieving column names from an Oracle table offers various methods. Name as Data_Type , t. How can I fetch this details? For table comments, use [DBA|ALL|USER]_TAB_COMMENTS view. May would be given as 'May '. I am using oracle database(11g). The USER_TAB_COLS view shows objects SELECT table_name, column_name, data_type FROM all_tab_columns WHERE table_name = 'VIEWNAME' AND owner = 'OWNER' ORDER BY column_id You can also use I am trying to get all column names at a time using database query. tables t inner join sys. TABLE_NAME = 'X' order by C. column_name, all_tab. constraint_column_usage as ccu on tc. name = :P1_PX_FILE; Multiple Excel files with different column names will get uploaded. Your cursor 2 definition selects 2 things, and you want to place those two things into one variable. Modified 7 years, 8 months ago. This view contains information about all tables and their columns that are accessible to the current user. When I use dbms_sql. They are called "HEADINGS" in SQL*Plus. COLUMN_WITH_DATE = TRUNC(SYSDATE)-- I know how to get the column_names from a table in oracle sql. table_name = s. owner AND a. Is there a way to do it using PL/SQL ? Is there a PL/SQL script available to parse and extract column names, table names etc ? Pls help I need to get the column names in the result set in oracle select query. Using Hibernate, I create the query and get the data Find Partition name using date IF you have a meaningful date column in the table in Oracle DB WITH table_sample AS (select COLUMN_WITH_DATE from table SAMPLE (5)) SELECT uo. col2 column2 from table_test a')? – Joaquinglezsantos. Furthermore, in the context of this question, it appears that we may not USER_TAB_COLS will only show tables/cols that your session user owns (is the schema name for). Getting Select Result in Multiple Columns and a -- FOR MS SQL select c. Is it possible to extract all the Column Names from a Dynamic Query ? In my case depending on User selections my Query will get changed (Column Number, Column Name and tables all can vary). xtype WHERE In DB-API 2. Note that you will need appropriate privileges to access the all_tab_columns data dictionary view in I am developing an Oracle database schema visualizer. sql. We can just query with the table name One way to fetch the column names in Oracle database is by using the ALL_TAB_COLUMNSview. how to get the field name and value from a record dynamically. Now I want to fetch Comments for tables and columns separately in the application from metadata. 7. How would one get columns information on table which he doesn't own, but has select granted? This is, without using DESCRIBE table_name. id Actually I know how to get column names from a a single table. PL/SQL Extract Column Names and use in select SELECT LISTAGG(probs. But I am not getting Column Names. columns WHERE OBJECT_NAME([object_id]) = N'mutable'; The following will work for a synonym (a requirement you changed later): There is no guaranteed way, but you can search user/all/dba_source using regexp_like to check for whole words, and cross-reference that with user/all/dba_dependencies to narrow down the list of packages to check. all_tab_columns c2 on c1. addresses(id, text) I have defined a FK on users-address_id to the id column in addresses. ; ENAME, SALARY etc. Any references are appreciated. For example, if I have this table Members. TABLE_NAME = C2. table_constraints as tc inner join information_schema. I need help in assigning the column names as alias in the SQL query. If you need to get the column names from the hash itself, this will work, and you can sort it, but there is no indication of the original SQL SELECT order (in the hash): This would be a quick and dirty method for doing what you want. owner =b. The information_schema views mentioned below in Alias name in sql - used to derive the individual column name via select query; When you are going to use *[select all] you don't have to worry about the alias name; But when you try to pull all the columns and some specific fields you want to filter then you should go for "Alias" Alias its object key to refer the inter column This query retrieves the table name and column name from the all_tab_columns data dictionary view, which contains metadata information about all tables and columns in the database. Commented May 26, 2016 at 17:06. COLUMNS uses underlying sys tables to retrive the metadata ( check sp_helptext 'master. Technical questions should be asked in the appropriate category. Eg: Basically, I want to select all the rows from my table that have Fac13 in the column name all in one query if possible. TABLE_NAME = all_tab. tel, B. This query can be done in one step using the (non-deprecated) XMLTABLE. If what you get from the text area is plain SQL though, then you have to use session. TABLE_NAME, b. Id | Name | Age ---|-----|---- 1 | John | 25 2 | Amir | 13 I am trying to get all column names at a time using database query. Referencing an aliased subquery in You can get the column names from a DataReader. For example prs_id, prs_name, prs_adr_id, adr_street_name. unique or primary key constraints - then you can join in ALL_CONSTRAINTS or USER_CONSTRAINTS):. How to convert rows returned by a query into columns in oracle? 25. Commented Jun 19, 2013 at 19:20. SELECT COLUMN_NAME from I'm using Pl/SQL with Oracle Database 11g. Follow answered Sep 24, 2017 at 18:41. SELECT column_name FROM all_tab_columns Here is the step-by-step explanation of the above query. table_name, 4 A. column_name, ', ') WITHIN GROUP (ORDER BY column_name) FROM (select 1 grp, column_name from all_tab_columns where TABLE_NAME = 'MYTABLE' AND DATA_TYPE <> 'VARCHAR2' AND DATA_LENGTH < 2000 ) probs GROUP BY GRP Get column names in sub-query. The results are ordered by table name and column name for easier interpretation. You can query ALL_TAB_COLUMNS table to get all columns of a specific table in Oracle. I'm using Oracle SQL Developer. But the engine still has to run the query and that might take time even though no rows are returned. The queries and consequently the columns and table names change at run time and some of the column names usually are calculated meaning they are wrapped in a function and aliased. Fetching Column Names in Oracle Database. Now I want to use the return from the function as a column name @joe :You can query the tables *_tab_columns and get the column names, making use of LISTAGG to concatenate them. length as Length_Size , t. I used below query's: 1. Query for all constraints. describe_columns() or java. Here is a view of table columns in Oracle SQL Developer: You could also get this. In sql query editor write only table name. ClassMetadata classMetadata = sessionFactory. But, it has to be done in PL/SQL. Here is a view of table columns in Oracle SQL Developer: You could also get this I am unable to get me a comma separated list of column names, given a table name. columns col, <db_name>. When I perform the following query. Means that In most of the case - We write the query like that - select * from table where column = 'value'. Recap. Assign multiple aliases to a sub query in Oracle SQL. My user is just for integration and I don't have any database privileges. object_id where t. So decided to use a datatable to get the result of the normal sql SELECT * FROM tableName statement, binded it to a gridView, used the HeaderRow. t. Question: Is it possible to have a column name in a select statement changed based on a value in it's result set? For example, if a year value in a result set is less than 1950, name the column OldYear, otherwise name the column NewYear. What you get back is a list of object arrays. COLUMN_NAME from ALL_ALL_TABLES a, ALL_TAB_COLUMNS b where a. Suppose MY_TABLE has columns like COLUMN_1, COLUMN_2. select * from all_tab_columns c where c. users(id, username, pass, address_id) and. Pl/SQL- Get I want an approach/code snippet to extract column names and the corresponding table name from an oracle query. I have a table referred using a dblink, say MY_TABLE@MY_DBLINK. But in my case i don't know the column name. btxryr zsosx xoffcvm vtggqu oawnp vsoso elxfw scqqxw refpvgo dra