How to find rows that have a value that contains a lowercase letter

Question

I\'m looking for an SQL query that gives me all rows where ColumnX contains any lowercase letter (e.g. \"1234aaaa5789\"). Same for uppercase.

Answer 1

IN MS SQL server use the COLLATE clause.

SELECT Column1
FROM Table1
WHERE Column1 COLLATE Latin1_General_CS_AS = 'casesearch'

Adding COLLATE Latin1_General_CS_AS makes the search case sensitive.

Default Collation of the SQL Server installation SQL_Latin1_General_CP1_CI_AS is not case sensitive.

To change the collation of the any column for any table permanently run following query.

ALTER TABLE Table1
ALTER COLUMN Column1 VARCHAR(20)
COLLATE Latin1_General_CS_AS

To know the collation of the column for any table run following Stored Procedure.

EXEC sp_help DatabaseName

Source : SQL SERVER – Collate – Case Sensitive SQL Query Search