How to get primary key of table?

Question

Is there a way to get the name of primary key field from mysql-database? For example:

I have a table like this:

+----+------+
| id | name |
+----+---         


        

Answer 1

SELECT kcu.column_name, kcu.ordinal_position
FROM   information_schema.table_constraints tc
INNER JOIN information_schema.key_column_usage kcu
ON     tc.CONSTRAINT_CATALOG = kcu.CONSTRAINT_CATALOG
AND    tc.CONSTRAINT_SCHEMA = kcu.CONSTRAINT_SCHEMA
AND    tc.CONSTRAINT_NAME = kcu.CONSTRAINT_NAME
WHERE  tc.table_schema = schema()             -- only look in the current schema
AND    tc.constraint_type = 'PRIMARY KEY'
AND    tc.table_name = ''    -- specify your table.
ORDER BY kcu.ordinal_position