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Monday, April 7, 2014

Identity column information

Use below query to get information for all identity columns in  a database:

SELECT QUOTENAME(SCHEMA_NAME(T.SCHEMA_ID)) + '.' + QUOTENAME(T.NAME) AS TABLENAME, C.NAME AS COLUMNNAME, CASE C.SYSTEM_TYPE_ID WHEN 56 THEN 'INT' WHEN 52 THEN 'SMALLINT' WHEN 48 THEN 'TINYINT' END AS 'DATATYPE', IDENT_CURRENT(SCHEMA_NAME(T.SCHEMA_ID) + '.' + T.NAME) AS CURRENTIDENTITYVALUE, IDENT_INCR(SCHEMA_NAME(T.SCHEMA_ID) + '.' + T.NAME) AS IDENTITYINCREMENT, IDENT_SEED(SCHEMA_NAME(T.SCHEMA_ID) + '.' + T.NAME) AS IDENTITYSEED, CASE C.SYSTEM_TYPE_ID WHEN 56 THEN (CONVERT(DECIMAL,IDENT_CURRENT(SCHEMA_NAME(T.SCHEMA_ID) + '.' + T.NAME)) * 100.00) / 2147483647 WHEN 52 THEN (CONVERT(DECIMAL,IDENT_CURRENT(SCHEMA_NAME(T.SCHEMA_ID) + '.' + T.NAME)) * 100.00) / 32767 WHEN 48 THEN (CONVERT(DECIMAL,IDENT_CURRENT(SCHEMA_NAME(T.SCHEMA_ID) + '.' + T.NAME)) * 100.00) / 255 END AS 'PERCENTAGEUSED'
FROM SYS.COLUMNS AS C INNER JOIN SYS.TABLES AS T ON T.[OBJECT_ID] = C.[OBJECT_ID] AND C.IS_IDENTITY = 1 ORDER BY PERCENTAGEUSED DESC

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