mysql - Discard last 3 characters of a field -


i want extract first (not last three) characters of string table like:

code -------- cref182 cxef7u8 cef7u8 cf777

how can perform query discard last 3 characters of string in result shows like:

code -------- cref cxef cef cf

i'm thinking should opposite of mysql right function? suggestions?

how about:

select reverse(substr(reverse(code), 4)) code yourtable;

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