SQL Query to drop all constraints in a table

DECLARE @sql nvarchar(255), @DB nvarchar(50), @Table nvarchar(50)SET @DB = 'source_1'SET @Table = 'Product'WHILE
EXISTS(SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog = @DB AND table_name = @Table)BEGIN


SELECT @sql = 'ALTER TABLE ' + @table + ' DROP CONSTRAINT ' + CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog = @DB AND table_name = @tableEXEC sp_executesql @sqlEND