get primary key of table
SELECT a.COLUMN_NAME FROM all_cons_columns a INNER JOIN all_constraints c ON a.constraint_name = c.constraint_name WHERE c.table_name = 'TBL' AND c.constraint_type = 'P';
get primary key of table
SELECT a.COLUMN_NAME FROM all_cons_columns a INNER JOIN all_constraints c ON a.constraint_name = c.constraint_name WHERE c.table_name = 'TBL' AND c.constraint_type = 'P';
sql find tables primary keys
-- NOTE: this is for SQL-Oracle specifically -- syntax: 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>' -- Replace <table-name> with your table-name AND cons.constraint_type = 'P' AND cons.constraint_name = cols.constraint_name AND cons.owner = cols.owner -- example: 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 = 'CUSTOMERS' AND cons.constraint_type = 'P' AND cons.constraint_name = cols.constraint_name AND cons.owner = cols.owner
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