I need to get the name of the primary key column.
In the input, I only have the table name.
SELECT cols.table_name, cols.column_name, cols.position, cons.status, cons.owner
FROM all_constraints cons, all_cons_columns cols
WHERE cols.table_name = 'TABLE_NAME'
AND cons.constraint_type = 'P'
AND cons.constraint_name = cols.constraint_name
AND cons.owner = cols.owner
ORDER BY cols.table_name, cols.position;
Make sure that 'TABLE_NAME' is in upper case since Oracle stores table names in upper case.
Same as the answer from 'Richie' but a bit more concise.
Query for user constraints only SELECT column_name FROM all_cons_columns WHERE constraint_name = ( SELECT constraint_name FROM user_constraints WHERE UPPER(table_name) = UPPER('tableName') AND CONSTRAINT_TYPE = 'P' ); Query for all constraints 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' );
user_constraints
by all_constraints
.
SELECT owner, column_name, position FROM all_cons_columns WHERE (owner, constraint_name) in (SELECT owner, constraint_name FROM all_constraints WHERE UPPER(table_name) = UPPER('&tableName') AND CONSTRAINT_TYPE = 'P') order by owner, position;
Select constraint_name,constraint_type from user_constraints where table_name** **= ‘TABLE_NAME’ ;
(This will list the primary key and then)
Select column_name,position from user_cons_columns where constraint_name=’PK_XYZ’;
(This will give you the column, here PK_XYZ is the primay key name)
Try This Code Here I created a table for get primary key column in oracle which is called test and then query
create table test
(
id int,
name varchar2(20),
city varchar2(20),
phone int,
constraint pk_id_name_city primary key (id,name,city)
);
SELECT cols.table_name, cols.column_name, cols.position, cons.status, cons.owner FROM all_constraints cons, all_cons_columns cols WHERE cols.table_name = 'TEST' AND cons.constraint_type = 'P' AND cons.constraint_name = cols.constraint_name AND cons.owner = cols.owner ORDER BY cols.table_name, cols.position;
Save the following script as something like findPK.sql.
set verify off
accept TABLE_NAME char prompt 'Table name>'
SELECT cols.column_name
FROM all_constraints cons NATURAL JOIN all_cons_columns cols
WHERE cons.constraint_type = 'P' AND table_name = UPPER('&TABLE_NAME');
It can then be called using
@findPK
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