Strip last two characters of a column in MySQL

Question

I have an SQL column where the entries are strings  I need to display those entries after trimming the last two characters  e g  if the entry is 199902345 it should output 1999023   I tried looking into TRIM but looks like it offers to trim only if we know what are the last two characters  But in my case  I don t know what those last two numbers are and they just need to be discarded   So  in short  what MySQL string operation enables to trim the last two characters of a string   I must add that the length of the string is not fixed  It could be 9 characters  11 characters or whatsoever

User · Accepted Answer

To select all characters except the last n from a string (or put another way, remove last n characters from a string); use the SUBSTRING and CHAR_LENGTH functions together:

SELECT col
     , /* ANSI Syntax  */ SUBSTRING(col FROM 1 FOR CHAR_LENGTH(col) - 2) AS col_trimmed
     , /* MySQL Syntax */ SUBSTRING(col,     1,    CHAR_LENGTH(col) - 2) AS col_trimmed
FROM tbl

To remove a specific substring from the end of string, use the TRIM function:

SELECT col
     , TRIM(TRAILING '.php' FROM col)
-- index.php becomes index
-- index.txt remains index.txt

User · Answer

You can use a LENGTH that string  minus the number of characters you want to remove in the SUBSTRING   select perhaps or use the TRIM   function

User · Answer

substring     http   dev mysql com doc refman 5 0 en string-functions html

User · Answer

Why not using LEFT string  length  function instead of substring  LEFT col char length col -2    you can visit here https   dev mysql com doc refman 5 7 en string-functions html function left to know more about Mysql String Functions

[mysql] Strip last two characters of a column in MySQL

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