1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
|
CREATE TEMPORARY TABLE t1 (f1 INTEGER PRIMARY KEY) Engine=InnoDB;
INSERT INTO t1 VALUES (1);
TRUNCATE TABLE t1;
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT * FROM t1;
ERROR 42S02: Table 'test.t1' doesn't exist
DROP TABLE t1;
CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);
CREATE TEMPORARY TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
INSERT INTO t1 VALUES (2);
SELECT f1 = 2 FROM t1;
f1 = 2
1
SELECT COUNT(*) = 1 FROM t1;
COUNT(*) = 1
1
TRUNCATE TABLE t1;
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT COUNT(*) = 1 FROM t1;
COUNT(*) = 1
1
SELECT f1 = 1 FROM t1;
f1 = 1
1
DROP TABLE t1;
SELECT COUNT(*) = 1 FROM t1;
COUNT(*) = 1
1
SELECT f1 = 1 FROM t1;
f1 = 1
1
TRUNCATE TABLE t1;
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
DROP TABLE t1;
CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);
CREATE TEMPORARY TABLE t1 (f1 INTEGER) ENGINE=InnoDB;
INSERT INTO t1 VALUES (2);
TRUNCATE TABLE t1;
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
SELECT f1 = 2 FROM t1;
f1 = 2
1
SELECT COUNT(*) = 1 FROM t1;
COUNT(*) = 1
1
DROP TABLE t1;
SELECT COUNT(*) = 0 FROM t1;
COUNT(*) = 0
1
DROP TABLE t1;
|