SQL query statement to find duplicate records in a database table. SELECT fieldname1, fieldname2, COUNT(duplicatefieldname) FROM tablename GROUP BY duplicatefieldname HAVING COUNT(duplicatefieldname) > 1
Sometime we just want to find any duplicate data in the table, this simple statement will help to get the list of duplicate data. SELECT field1,…
A simple statement to update one table field with another table field value. UPDATE theUpdateTable INNER JOIN theValueTable ON (theUpdateTable.matchValueField =theValueTable.matchValueField) SETtheUpdateTable.valueToUpdate =theValueTable.valueToUpdate