SQL Server – TSql to find Records matching certain criteria in all the tables of a DB.

Generally, we try to find out records matching a certain criteria from a single or few tables. However, there are times when we need to find out records matching a criteria from all the tables of a SQL Database and today I will explain you a simple way to retrieve those records.
Recently, I was asked by my colleague, who was working on a MS Dynamics CRM migration project, to let him know the records which were created after a particular date in the source. So that, he could analyze only those records and strategize the Migration process.
I quickly opened up the SSMS and came up with the below script -
USE < DBName > --Replace this with the actual DBName

DECLARE @ColumnName AS VARCHAR(50) = 'CreatedOn' --The name of the column on which you need to put the criteria
DECLARE @Criteria AS VARCHAR(50) = 'CONVERT(DATE,' + @ColumnName + ') >= ''20130225''' -- The Actual criteria/WHERE Clause of the query

--The below will list the TSQL Statements which could be copied & executed in a separate query window.
SELECT 'IF EXISTS(SELECT 1 FROM ' + T.NAME + ' WHERE ' + @Criteria + ') ' + 'SELECT ''' + T.NAME + ''' TableName, * FROM ' + T.NAME + ' WHERE ' + @Criteria
FROM sys.columns C
INNER JOIN sys.tables T
 ON T.object_id = C.object_id
WHERE C.NAME = @ColumnName
The above script will list down the SELECT statements which could be copied and executed in a separate query window connecting to the same Database. On execution, you will get the list of records from each table base on the specified criteria.

Hope, this helps!



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