Question

i have an stored procedure like below:

SET temp_Today = SUBSTR(( NOW() + 0) FROM 3 FOR 6);
SET temp_LastIdDoc = CONCAT(temp_Today,temp_IdAgency);
SELECT NumDoc FROM tbldocument WHERE NumDoc REGEXP '^temp_LastIdDoc';

i know it’s wrong because it searches for NumDoc that begins with ‘temp_LastIdDoc’. how can i use temp_LastIdDoc as parameter in this query?
and another question is that how can i limit chars that come after it to 4 chars?

Answer 1

You can use this way –

SET temp_LastIdDoc = CONCAT('^', temp_Today, temp_IdAgency);
SELECT NumDoc FROM tbldocument WHERE NumDoc REGEXP temp_LastIdDoc;