Zerar identity da tabela TB_TESTE:
SELECT
IDENT_SEED(TABLE_NAME) AS Seed,
IDENT_INCR(TABLE_NAME) AS Increment,
IDENT_CURRENT(TABLE_NAME) AS Current_Identity,
TABLE_NAME,
'DBCC CHECKIDENT(' + TABLE_NAME + ', RESEED, ' + CAST(IDENT_SEED(TABLE_NAME) AS VARCHAR(10)) + ')'
FROM
INFORMATION_SCHEMA.TABLES
WHERE
OBJECTPROPERTY(OBJECT_ID(TABLE_NAME), 'TableHasIdentity') = 1 -- APENAS TABELAS COM IDENTITY
AND TABLE_TYPE = 'BASE TABLE'
AND TABLE_NAME IN ('TB_TESTE');
SQL