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SELECT * FROM `help_topic`
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完整内容 help_topic_id name help_category_id description example url
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 0
 		0 MIN 16 Syntax:
MIN([DISTINCT] expr)

Returns the minimum ...		 
MariaDB> SELECT student_name, MIN(test_score), MAX...
https://mariadb.com/kb/en/min/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 1
 		1 JOIN 27 MySQL supports the following JOIN syntaxes for the... 
SELECT left_tbl.*
  FROM left_tbl LEFT JOIN right_...
https://mariadb.com/kb/en/join-syntax/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 2
 		2 HEX 37 Syntax:
HEX(str), HEX(N)

For a string argument st...		 
MariaDB> SELECT 0x616263, HEX('abc'), UNHEX(HEX('a...
https://mariadb.com/kb/en/hex/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 3
 		3 REPLACE 27 Syntax:
REPLACE [LOW_PRIORITY | DELAYED]
   [INTO...		 https://mariadb.com/kb/en/replace/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 4
 		4 CONTAINS 30 Contains(g1,g2)

Returns 1 or 0 to indicate whethe...		 https://mariadb.com/kb/en/contains/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 5
 		5 SRID 36 SRID(g)

Returns an integer indicating the Spatial...		 
MariaDB> SELECT SRID(GeomFromText('LineString(1 1,...
https://mariadb.com/kb/en/srid/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 6
 		6 CURRENT_TIMESTAMP 31 Syntax:
CURRENT_TIMESTAMP, CURRENT_TIMESTAMP()

CU...		 https://mariadb.com/kb/en/current_timestamp/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 7
 		7 SHOW CONTRIBUTORS 26 Syntax:
SHOW CONTRIBUTORS

The SHOW CONTRIBUTORS s...		 https://mariadb.com/kb/en/show-contributors/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 8
 		8 VARIANCE 16 Syntax:
VARIANCE(expr)

Returns the population sta...		 https://mariadb.com/kb/en/variance/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 9
 		9 DROP SERVER 39 Syntax:
DROP SERVER [ IF EXISTS ] server_name

Dro...		 https://mariadb.com/kb/en/drop-server/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 10
 		10 SHOW AUTHORS 26 Syntax:
SHOW AUTHORS

The SHOW AUTHORS statement d...		 https://mariadb.com/kb/en/show-authors/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 11
 		11 VAR_SAMP 16 Syntax:
VAR_SAMP(expr)

Returns the sample varianc...		 https://mariadb.com/kb/en/var_samp/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 12
 		12 CONCAT 37 Syntax:
CONCAT(str1,str2,...)

Returns the string ...		 
MariaDB> SELECT CONCAT('My', 'S', 'QL');
        -...
https://mariadb.com/kb/en/concat/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 13
 		13 GEOMETRY HIERARCHY 34 Geometry is the base class. It is an abstract clas... https://mariadb.com/kb/en/geometry-hierarchy/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 14
 		14 CHAR FUNCTION 37 Syntax:
CHAR(N,... [USING charset_name])

CHAR() i...		 
MariaDB> SELECT CHAR(77,121,83,81,'76');
        -...
https://mariadb.com/kb/en/char-function/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 15
 		15 DATETIME 22 DATETIME

A date and time combination. The support...		 https://mariadb.com/kb/en/datetime/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 16
 		16 SHOW CREATE TRIGGER 26 Syntax:
SHOW CREATE TRIGGER trigger_name

This sta...		 https://mariadb.com/kb/en/show-create-trigger/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 17
 		17 SHOW CREATE PROCEDURE 26 Syntax:
SHOW CREATE PROCEDURE proc_name

This stat...		 
MariaDB> SHOW CREATE PROCEDURE test.simpleproc\G
*...
https://mariadb.com/kb/en/show-create-procedure/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 18
 		18 OPEN 23 Syntax:
OPEN cursor_name

This statement opens a p...		 https://mariadb.com/kb/en/open/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 19
 		19 INTEGER 22 INTEGER[(M)] [UNSIGNED] [ZEROFILL]

This type is a...		 https://mariadb.com/kb/en/sql_language-data_types-int
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 20
 		20 LOWER 37 Syntax:
LOWER(str)

Returns the string str with al...		 https://mariadb.com/kb/en/lower/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 21
 		21 SHOW COLUMNS 26 Syntax:
SHOW [FULL] COLUMNS {FROM | IN} tbl_name [...		 https://mariadb.com/kb/en/show-columns/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 22
 		22 CREATE TRIGGER 39 Syntax:
CREATE
   [DEFINER = { user | CURRENT_USE...		 https://mariadb.com/kb/en/create-trigger/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 23
 		23 MONTH 31 Syntax:
MONTH(date)

Returns the month for date, i...		 
MariaDB> SELECT MONTH('2008-02-03');
        -> 2
https://mariadb.com/kb/en/month/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 24
 		24 TINYINT 22 TINYINT[(M)] [UNSIGNED] [ZEROFILL]

A very small i...		 https://mariadb.com/kb/en/tinyint/
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