Question

I’m storing the time in the attendance table in this format (00:00:00)..
Now i need to find the login data stored before 09:00:00.

I’m using this query to find the data.

SELECT user_name, 
       time_in 
  FROM attendance 
 WHERE user_name='Vignesh' 
  AND  time_in < 09:20:59

This thing is not working for me. Is there any other method to get the data’s before 09:00:00 from the DB?

Answer 1

You need to enclose it in quotes:

AND  time_in < '09:20:59'
               ^--------^--- single quote char

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-literals.html

MySQL recognizes TIME values in these formats:

• As a string in 'D HH:MM:SS' format. You can also use one of the following “relaxed” syntaxes: 'HH:MM:SS', 'HH:MM', 'D HH:MM', 'D HH', or 'SS'. Here D represents days and can have a value from 0 to 34.

• As a string with no delimiters in 'HHMMSS' format, provided that it makes sense as a time. For example, '101112' is understood as '10:11:12', but '109712' is illegal (it has a nonsensical minute part) and becomes '00:00:00'.

• As a number in HHMMSS format, provided that it makes sense as a time. For example, 101112 is understood as '10:11:12'. The following alternative formats are also understood: SS, MMSS, or HHMMSS.