MySQL does not use PL/SQL so I’m afraid I cannot help you.

Can u plz explain how to get all tables having a common PK or FK……in PL/SQL Dev

Thanks

http://forge.mysql.com/snippets/view.php?id=119

Heads up, you do CONCAT(t.table_name,”.”,t.table_schema) and you have a comma too much after

as tbl,

that said, I think it’s somewhat cleaner and perhaps faster if you use

TABLE_CONSTRAINTS rather than KEY_COLUMN_USAGE

and

CONSTRAINT_TYPE = ‘PRIMARY KEY’ rather than CONSTRAINT_NAME = ‘PRIMARY’.

Also, if you don’t check for the TABLE_TYPE, you will report VIEWs as not having a primary key. I’m not sure if that’s intended but if not I recommend including a

TABLE_TYPE = ‘BASE TABLE’

in the where and this will automatically get rid of the tables in the information_schema.

SELECT t.table_schema
, t.table_name
FROM information_schema.TABLES t
LEFT JOIN information_schema.TABLE_CONSTRAINTS c
ON t.table_schema = c.table_schema
AND t.table_name = c.table_name
AND ‘PRIMARY KEY’ = c.constraint_type
WHERE c.constraint_name IS NULL
AND t.table_type = ‘BASE TABLE’;

Also, I’m not sure if it’s intended, but the second query will return multiple rows if the primary key is a composite key (one row for each column in the pk). For reporting I would probably use GROUP_CONCAT the columns to get exactly as many rows as there are primary keys.