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

SELECT * FROM my_table WHERE my_column = 'my string'
COLLATE Latin1_General_CS_AS

This would make a case sensitive search.

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EDIT

As stated in kouton's comment here and tormuto's comment here whosoever faces problem with the below collation

COLLATE Latin1_General_CS_AS

should first check the default collation for their SQL server, their respective database and the column in question; and pass in the default collation with the query expression. List of collations can be found here.

Answer 2

SELECT * FROM my_table 
WHERE UPPER(some_field) != some_field

This should work with funny characters like åäöøüæï. You might need to use a language-specific utf-8 collation for the table.

Answer 3

SELECT * FROM Yourtable 
WHERE UPPER([column_NAME]) COLLATE Latin1_General_CS_AS !=[Column_NAME]

Answer 4

I have to add BINARY to the ColumnX, to get result as case sensitive

SELECT * FROM MyTable WHERE BINARY(ColumnX) REGEXP '^[a-z]';

Answer 5

I've done something like this to find out the lower cases.

SELECT *
FROM YourTable
  where BINARY_CHECKSUM(lower(ColumnName)) = BINARY_CHECKSUM(ColumnName)

Answer 6

Logically speaking Rohit's solution should have worked, but it didn't. I think SQL Management Studio messed up when trying to optimize this.

But by modifying the string before comparing them I was able to get the right results. This worked for me:

SELECT [ExternalId]
FROM [EquipmentSerialsMaster] where LOWER('0'+[ExternalId]) COLLATE Latin1_General_CS_AS != '0'+[ExternalId]