4 ms·
EXPLAIN provides a bit of the clue but the meat of the problem is that the VARCHAR is being changed to a CHAR. EXPLAIN is just verifies that something is going
by megaman821 15y ago
EXPLAIN provides a bit of the clue but the meat of the problem is that the VARCHAR is being changed to a CHAR. EXPLAIN is just verifies that something is going on to force a temp table to be created.