Question

I have 3 columns and basically I want to combine them into a fourth column and TRIM the data to less than 32 ?

I’m a little confused how to do this – basically I’m trying to do:

Column A - TEXT
Column B - Number
Column C - I need to Trim this to 10 chars and then use this Trimmed value

Column D = ColumnA + Column B + Column C

?

Edit:

So I’m trying this

UPDATE table
SET
  D = substring(concat(A, B, "|", substring(C, 0, 10)), 0, 32)
WHERE
  D IS NOT NULL

Will this work or ?

Answer 1

Maybe something like this (untested)…

SUBSTR(CONCAT(ColumnA, Column B, Column C), 1, 32)

http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_substr