mysql - TRIM query on varying character length varchar -


help!

i trying trim below string middle section "ms lync"

"systems & apps -> ms lync -> request change"

i have tried following query still special characters. string lengths change special characters dont:

left(probcodedesc, charindex('-', probcodedesc)) area, substring(probcodedesc, charindex('> ',probcodedesc),charindex('> ', probcodedesc, charindex('>', probcodedesc) - charindex(' ->', probcodedesc))) category, right(probcodedesc, charindex('>', reverse(probcodedesc))) event

all & advice appreciated!

i'd use nifty substring_index function doing this.

reference: https://dev.mysql.com/doc/refman/5.5/en/string-functions.html#function_substring-index

for example:

set @s = 'systems & apps -> ms lync -> request change';  select trim(substring_index(@s,'->',1)) `area`  area ---------------- systems & apps     select trim(substring_index(substring_index(@s,'->',-2),'->',1)) `category`  category        --------- ms lync     select trim(substring_index(@s,'->',-1)) `event`  event ------------------ request change

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