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SELECT * FROM `help_topic` ORDER BY `example` DESC 
编辑内嵌 ] [ 编辑 ] [ 解析 SQL ] [ 创建 PHP 代码 ] [ 刷新 ]
完整内容 help_topic_id name help_category_id description example 递减 递增 1 url
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` = 230
230 CONVERT 37 Syntax:
CONVERT(expr,type), CONVERT(expr USING tra...
SELECT enum_col FROM tbl_name ORDER BY CAST(enum_c...
https://mariadb.com/kb/en/convert/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 292
292 ASBINARY 32 AsBinary(g), AsWKB(g)

Converts a value in interna...
SELECT AsBinary(g) FROM geom;

https://mariadb.com/kb/en/asbinary/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 269
269 PURGE BINARY LOGS 8 Syntax:
PURGE { BINARY | MASTER } LOGS
   { TO 'l...
PURGE BINARY LOGS TO 'mysql-bin.010';
PURGE BINARY...
https://mariadb.com/kb/en/sql-commands-purge-logs/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 112
112 DEFAULT 14 Syntax:
DEFAULT(col_name)

Returns the default val...
MariaDB> UPDATE t SET i = DEFAULT(i)+1 WHERE id < ...
https://mariadb.com/kb/en/default/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 359
359 LOAD_FILE 37 Syntax:
LOAD_FILE(file_name)

Reads the file and r...
MariaDB> UPDATE t
            SET blob_col=LOAD_FI...
https://mariadb.com/kb/en/load_file/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 328
328 SHOW PROCEDURE STATUS 26 Syntax:
SHOW PROCEDURE STATUS
   [LIKE 'pattern' ...
MariaDB> SHOW PROCEDURE STATUS LIKE 'sp1'\G
******...
https://mariadb.com/kb/en/show-procedure-status/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 278
278 SHOW CREATE TABLE 26 Syntax:
SHOW CREATE TABLE tbl_name

Shows the CREA...
MariaDB> SHOW CREATE TABLE t\G
*******************...
https://mariadb.com/kb/en/show-create-table/
编辑 编辑 复制 复制 删除 删除
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` = 358
358 SHOW CREATE EVENT 26 Syntax:
SHOW CREATE EVENT event_name

This stateme...
MariaDB> SHOW CREATE EVENT test.e_daily\G
********...
https://mariadb.com/kb/en/show-create-event/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 309
309 SHOW CREATE DATABASE 26 Syntax:
SHOW CREATE {DATABASE | SCHEMA} [IF NOT EX...
MariaDB> SHOW CREATE DATABASE test\G
*************...
https://mariadb.com/kb/en/show-create-database/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 429
429 PASSWORD 12 Syntax:
PASSWORD(str)

Calculates and returns a ha...
MariaDB> SET old_passwords = 0;
MariaDB> SELECT PA...
https://mariadb.com/kb/en/password/
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DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 325
325 AREA 2 Area(poly)

Returns as a double-precision number t...
MariaDB> SET @poly = 'Polygon((0 0,0 3,3 0,0 0),(1...
https://mariadb.com/kb/en/area/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 402
402 NUMINTERIORRINGS 2 NumInteriorRings(poly)

Returns the number of inte...
MariaDB> SET @poly =
    -> 'Polygon((0 0,0 3,3 3,...
https://mariadb.com/kb/en/numinteriorrings/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 403
403 INTERIORRINGN 2 InteriorRingN(poly,N)

Returns the N-th interior r...
MariaDB> SET @poly =
    -> 'Polygon((0 0,0 3,3 3,...
https://mariadb.com/kb/en/interiorringn/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 143
143 EXTERIORRING 2 ExteriorRing(poly)

Returns the exterior ring of t...
MariaDB> SET @poly =
    -> 'Polygon((0 0,0 3,3 3,...
https://mariadb.com/kb/en/exteriorring/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 225
225 NUMPOINTS 13 NumPoints(ls)

Returns the number of Point objects...
MariaDB> SET @ls = 'LineString(1 1,2 2,3 3)';
Mari...
https://mariadb.com/kb/en/numpoints/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 501
501 GLENGTH 13 GLength(ls)

Returns as a double-precision number ...
MariaDB> SET @ls = 'LineString(1 1,2 2,3 3)';
Mari...
https://mariadb.com/kb/en/glength/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 198
198 STARTPOINT 13 StartPoint(ls)

Returns the Point that is the star...
MariaDB> SET @ls = 'LineString(1 1,2 2,3 3)';
Mari...
https://mariadb.com/kb/en/startpoint/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 286
286 POINTN 13 PointN(ls,N)

Returns the N-th Point in the Linest...
MariaDB> SET @ls = 'LineString(1 1,2 2,3 3)';
Mari...
https://mariadb.com/kb/en/pointn/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 102
102 ENDPOINT 13 EndPoint(ls)

Returns the Point that is the endpoi...
MariaDB> SET @ls = 'LineString(1 1,2 2,3 3)';
Mari...
https://mariadb.com/kb/en/endpoint/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 183
183 NUMGEOMETRIES 25 NumGeometries(gc)

Returns the number of geometrie...
MariaDB> SET @gc = 'GeometryCollection(Point(1 1),...
https://mariadb.com/kb/en/numgeometries/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 213
213 GEOMETRYN 25 GeometryN(gc,N)

Returns the N-th geometry in the ...
MariaDB> SET @gc = 'GeometryCollection(Point(1 1),...
https://mariadb.com/kb/en/geometryn/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 386
386 MBRWITHIN 6 MBRWithin(g1,g2)

Returns 1 or 0 to indicate wheth...
MariaDB> SET @g1 = GeomFromText('Polygon((0 0,0 3,...
https://mariadb.com/kb/en/mbrwithin/
编辑 编辑 复制 复制 删除 删除
DELETE FROM help_topic WHERE `help_topic`.`help_topic_id` = 354
354 MBRCONTAINS 6 MBRContains(g1,g2)

Returns 1 or 0 to indicate whe...
MariaDB> SET @g1 = GeomFromText('Polygon((0 0,0 3,...
https://mariadb.com/kb/en/mbrcontains/
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