DROP DATABASE IF EXISTS mcs266_db;
CREATE DATABASE mcs266_db;
USE mcs266_db;
CREATE TABLE t1(t1_d VARCHAR(20), t1_t CHAR(10), t1_dt VARCHAR(25))ENGINE=Columnstore;
INSERT INTO t1 VALUES(NULL, NULL, NULL);
INSERT INTO t1 VALUES('2222/11/11', '12:12:12', '2020-11-01 22:12:12');
INSERT INTO t1 VALUES('2020/01/01', '17:31:11', '2020-22-11 17:34:56');
INSERT INTO t1 VALUES('2016/02/01', '21:41:19', '2017-02-05 02:19:32');
SELECT STR_TO_DATE('1990,09,24', '%Y,%m,%d') FROM t1 LIMIT 1;
STR_TO_DATE('1990,09,24', '%Y,%m,%d')
1990-09-24
SELECT STR_TO_DATE('09:30:17','%h:%i:%s') FROM t1 LIMIT 1;
STR_TO_DATE('09:30:17','%h:%i:%s')
09:30:17
SELECT STR_TO_DATE('09:30:17mcs','%h:%s:%imcs') FROM t1 LIMIT 1;
STR_TO_DATE('09:30:17mcs','%h:%s:%imcs')
09:17:30
SELECT STR_TO_DATE('1990/09/24 19:52:17', '%Y/%m/%d %H:%i:%s') FROM t1 LIMIT 1;
STR_TO_DATE('1990/09/24 19:52:17', '%Y/%m/%d %H:%i:%s')
1990-09-24 19:52:17
SELECT t1_d, STR_TO_DATE(t1_d, '%Y/%m/%d') FROM t1 ORDER BY 1;
t1_d	STR_TO_DATE(t1_d, '%Y/%m/%d')
NULL	NULL
2016/02/01	2016-02-01
2020/01/01	2020-01-01
2222/11/11	2222-11-11
SELECT t1_t, STR_TO_DATE(t1_t, '%H:%i:%s') FROM t1 ORDER BY 1;
t1_t	STR_TO_DATE(t1_t, '%H:%i:%s')
NULL	NULL
12:12:12	12:12:12
17:31:11	17:31:11
21:41:19	21:41:19
SELECT t1_dt, STR_TO_DATE(t1_dt, '%Y-%d-%m %H:%i:%s') FROM t1 ORDER BY 1;
t1_dt	STR_TO_DATE(t1_dt, '%Y-%d-%m %H:%i:%s')
NULL	NULL
2017-02-05 02:19:32	2017-05-02 02:19:32
2020-11-01 22:12:12	2020-01-11 22:12:12
2020-22-11 17:34:56	2020-11-22 17:34:56
SELECT STR_TO_DATE(t1_d) FROM t1;
ERROR 42000: Incorrect parameter count in the call to native function 'STR_TO_DATE'
DROP DATABASE mcs266_db;