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MySQL 教程

MySQL 教程 MySQL 简介 MySQL 管理系统

MySQL SQL 语句

MySQL SQL MySQL SELECT MySQL WHERE MySQL AND, OR, NOT MySQL ORDER BY MySQL INSERT INTO MySQL NULL Values MySQL UPDATE MySQL DELETE MySQL LIMIT MySQL MIN 和 MAX MySQL COUNT, AVG, SUM MySQL LIKE MySQL 通配符 MySQL IN MySQL BETWEEN MySQL 别名 MySQL 联接 MySQL INNER JOIN MySQL LEFT JOIN MySQL RIGHT JOIN MySQL CROSS JOIN MySQL 自联接 MySQL UNION MySQL GROUP BY MySQL HAVING MySQL EXISTS MySQL ANY, ALL MySQL INSERT SELECT MySQL CASE MySQL Null 函数 MySQL 注释 MySQL 运算符

MySQL 数据库

MySQL 创建数据库 MySQL 删除数据库 MySQL 创建表 MySQL 删除表 MySQL 更改表 MySQL 约束 MySQL Not Null MySQL Unique MySQL Primary Key MySQL Foreign Key MySQL Check MySQL Default MySQL Create Index MySQL 自动增量 MySQL 日期 MySQL 视图

MySQL 参考手册

MySQL 数据类型 MySQL 函数
String 字符串函数 ASCII CHAR_LENGTH CHARACTER_LENGTH CONCAT CONCAT_WS FIELD FIND_IN_SET FORMAT INSERT INSTR LCASE LEFT LENGTH LOCATE LOWER LPAD LTRIM MID POSITION REPEAT REPLACE REVERSE RIGHT RPAD RTRIM SPACE STRCMP SUBSTR SUBSTRING SUBSTRING_INDEX TRIM UCASE UPPER Numeric 数值函数 ABS ACOS ASIN ATAN ATAN2 AVG CEIL CEILING COS COT COUNT DEGREES DIV EXP FLOOR GREATEST LEAST LN LOG LOG10 LOG2 MAX MIN MOD PI POW POWER RADIANS RAND ROUND SIGN SIN SQRT SUM TAN TRUNCATE Date 日期函数 ADDDATE ADDTIME CURDATE CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURTIME DATE DATEDIFF DATE_ADD DATE_FORMAT DATE_SUB DAY DAYNAME DAYOFMONTH DAYOFWEEK DAYOFYEAR EXTRACT FROM_DAYS HOUR LAST_DAY LOCALTIME LOCALTIMESTAMP MAKEDATE MAKETIME MICROSECOND MINUTE MONTH MONTHNAME NOW PERIOD_ADD PERIOD_DIFF QUARTER SECOND SEC_TO_TIME STR_TO_DATE SUBDATE SUBTIME SYSDATE TIME TIME_FORMAT TIME_TO_SEC TIMEDIFF TIMESTAMP TO_DAYS WEEK WEEKDAY WEEKOFYEAR YEAR YEARWEEK 高级功能 BIN BINARY CASE CAST COALESCE CONNECTION_ID CONV CONVERT CURRENT_USER DATABASE IF IFNULL ISNULL LAST_INSERT_ID NULLIF SESSION_USER SYSTEM_USER USER VERSION

MySQL 实例

MySQL 实例 MySQL 测验 MySQL 练习

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MySQL 示例

MySQL SELECT

SELECT Column SELECT * SELECT DISTINCT SELECT COUNT(DISTINCT olumn_name)

示例解析

MySQL WHERE

WHERE Clause Text Fields vs. Numeric Fields

示例解析

MySQL AND, OR and NOT

AND OR Another OR NOT Combining AND and OR Combining AND and NOT

示例解析

MySQL ORDER BY

ORDER BY ORDER BY DESC ORDER BY Several Columns ORDER BY Several Columns + ASC and DESC

示例解析

MySQL NULL Values

IS NULL Operator IS NOT NULL Operator

示例解析

MySQL LIMIT

LIMIT LIMIT with WHERE

示例解析

MySQL MIN() and MAX()

MIN() MAX()

示例解析

MySQL COUNT(), AVG() and SUM()

COUNT() AVG() SUM()

示例解析

MySQL LIKE

Select all table rows starting with "a" Select all table rows ending with "a" Select all table rows that have "or" in any position Select all table rows that have "r" in the second position Select all table rows that starts with "a" and ends with "o" Select all table rows that starts with "a" and are at least 3 characters in length Select all table rows that does NOT start with "a"

示例解析

MySQL Wildcards

The % Wildcard The _ Wildcard

示例解析

MySQL IN

IN NOT IN IN with SELECT

示例解析

MySQL BETWEEN

BETWEEN NOT BETWEEN BETWEEN with IN BETWEEN Text Values NOT BETWEEN Text Values BETWEEN Date Values

示例解析

MySQL Aliases

Alias for Columns Two Aliases An Alias that contains multiple columns Alias for Tables

示例解析

MySQL Joins

INNER JOIN - Join two tables INNER JOIN - Join three tables LEFT JOIN RIGHT JOIN CROSS JOIN Self Join

示例解析

MySQL UNION

UNION UNION ALL UNION with WHERE UNION ALL with WHERE

示例解析

MySQL GROUP BY

GROUP BY GROUP BY and ORDER BY GROUP BY with JOIN

示例解析

MySQL HAVING

HAVING and GROUP BY HAVING and ORDER BY HAVING and WHERE

示例解析

MySQL EXISTS

EXISTS - Price less than 20 EXISTS - Price equals 20

Example Explained

MySQL ANY and ALL

ANY - Example 1 ANY - Example 2 ANY - Example 3 ALL - Example 1 ALL - Example 2

示例解析

MySQL CASE

CASE 1 CASE 2

示例解析

MySQL Comments

Single line Comment Single line comment at the end of a line Single line comments to ignore statement Multi line comment Multi line comment to ignore many statement

示例解析

MySQL 数据库

MySQL 数据库教程可以在这里找到:

MySQL Create DB MySQL Drop DB MySQL Create Table MySQL Drop Table MySQL Alter Table MySQL Constraints MySQL Not Null MySQL Unique MySQL Primary Key MySQL Foreign Key MySQL Check MySQL Default MySQL Create Index MySQL Auto Increment MySQL Dates MySQL Views


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