blob: 0ebf643e1f11c704109f1c20aa7a60bd7638caea (
plain)
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
|
CREATE TABLE t1(id INT);
CREATE VIEW IF NOT EXISTS v1 AS SELECT * FROM t1 WHERE id>10;
INSERT INTO t1 VALUES (5), (8), (10), (20), (30);
SELECT * FROM t1;
SELECT * FROM v1;
--error ER_TABLE_EXISTS_ERROR
CREATE VIEW v1 AS SELECT * FROM t1 WHERE id>11;
SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME='v1';
CREATE VIEW IF NOT EXISTS v1 AS SELECT * FROM t1 WHERE id>12;
SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME='v1';
--error ER_WRONG_USAGE
CREATE OR REPLACE VIEW IF NOT EXISTS v1 AS SELECT * FROM t1 WHERE id>13;
SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME='v1';
CREATE OR REPLACE VIEW v1 AS SELECT * FROM t1 WHERE id>14;
SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_NAME='v1';
INSERT INTO t1 VALUES (50), (80), (3), (2), (40);
SELECT * FROM t1;
SELECT * FROM v1;
DROP TABLE IF EXISTS v1;
DROP VIEW IF EXISTS v1;
DROP VIEW IF EXISTS v1;
DROP VIEW IF EXISTS t1;
DROP TABLE t1;
|
