Does it make sense to ever index a DATETIME column? We do a lot of reporting on a large (~10MM records) table where we only need to look at a particular day or two. My selects currently look like:
WHERE entered >= 20040124000000 AND entered <= 20040124235959 Is there such a thing as an index on the first 8 characters of a DATETIME column? And if so, how do I reconstruct the WHERE to use it? Would this work: WHERE SUBSTRING(entered, 1, 8) = 20040124 ? I couldn't find any relevant info in the purple book. ____________________________________________________________ Eamon Daly NextWave Media Group LLC Tel: 1 773 975-1115 Fax: 1 773 913-0970 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
