(TOK_QUERY (TOK_FROM (TOK_TABREF src)) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION WHEN (= 1 1) 2 (= 3 5) 4 5)) (TOK_SELEXPR (TOK_FUNCTION WHEN (= 12 11) 13 (= 14 10) 15))) (TOK_LIMIT 1))) null