blob: 3e6f1a3bb7ed4940d308cbc925ddfbc4910d75c7 (
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
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
|
SELECT PLUGIN_NAME, PLUGIN_VERSION, PLUGIN_STATUS, PLUGIN_TYPE, PLUGIN_AUTHOR, PLUGIN_DESCRIPTION, PLUGIN_LICENSE, LOAD_OPTION, PLUGIN_MATURITY FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME='user_variables';
PLUGIN_NAME user_variables
PLUGIN_VERSION 1.0
PLUGIN_STATUS ACTIVE
PLUGIN_TYPE INFORMATION SCHEMA
PLUGIN_AUTHOR Sergey Vojtovich
PLUGIN_DESCRIPTION User-defined variables
PLUGIN_LICENSE GPL
LOAD_OPTION ON
PLUGIN_MATURITY Stable
SHOW CREATE TABLE INFORMATION_SCHEMA.USER_VARIABLES;
Table Create Table
user_variables CREATE TEMPORARY TABLE `user_variables` (
`VARIABLE_NAME` varchar(64) NOT NULL,
`VARIABLE_VALUE` varchar(2048),
`VARIABLE_TYPE` varchar(64) NOT NULL,
`CHARACTER_SET_NAME` varchar(32)
) ENGINE=MEMORY DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
FLUSH USER_VARIABLES;
SELECT COUNT(*) FROM INFORMATION_SCHEMA.USER_VARIABLES;
COUNT(*)
0
SET @int_var=1;
SET @uint_var=CAST(2 AS UNSIGNED INTEGER);
SET @str_var='Value of string variable';
SET @utf8str_var=_utf8 'UTF8 string value';
SET @double_var=CAST(1 AS DOUBLE);
SET @dec_var=CAST(1 AS DECIMAL(20, 10));
SET @time_var=CAST('2016-02-25' AS DATE);
SET @' @#^%'='Value of variable with odd name';
SET @''='Value of variable with empty name';
SET @null_var=NULL;
SELECT COUNT(*) FROM INFORMATION_SCHEMA.USER_VARIABLES;
COUNT(*)
10
SELECT * FROM INFORMATION_SCHEMA.USER_VARIABLES ORDER BY VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE VARIABLE_TYPE CHARACTER_SET_NAME
Value of variable with empty name VARCHAR latin1
@#^% Value of variable with odd name VARCHAR latin1
dec_var 1.0000000000 DECIMAL latin1
double_var 1 DOUBLE latin1
int_var 1 INT latin1
null_var NULL VARCHAR binary
str_var Value of string variable VARCHAR latin1
time_var 2016-02-25 VARCHAR latin1
uint_var 2 INT UNSIGNED latin1
utf8str_var UTF8 string value VARCHAR utf8mb3
SHOW USER_VARIABLES;
Variable_name Value
Value of variable with empty name
@#^% Value of variable with odd name
dec_var 1.0000000000
double_var 1
int_var 1
null_var NULL
str_var Value of string variable
time_var 2016-02-25
uint_var 2
utf8str_var UTF8 string value
FLUSH USER_VARIABLES;
SELECT COUNT(*) FROM INFORMATION_SCHEMA.USER_VARIABLES;
COUNT(*)
0
|
