目录

MySQL Examples

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MySQL SELECT

SELECT Column SELECT * SELECT DISTINCT SELECT COUNT(DISTINCT column_name)

Examples Explained

MySQL WHERE

WHERE Clause Text Fields vs. Numeric Fields

Examples Explained

MySQL AND, OR and NOT

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

Examples Explained

MySQL ORDER BY

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

Examples Explained

MySQL NULL Values

IS NULL Operator IS NOT NULL Operator

Examples Explained

MySQL LIMIT

LIMIT LIMIT with WHERE

Examples Explained

MySQL MIN() and MAX()

Examples Explained

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

COUNT() AVG() SUM()

Examples Explained

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"

Examples Explained

MySQL Wildcards

The % Wildcard The _ Wildcard

Examples Explained

MySQL IN

IN NOT IN IN with SELECT

Examples Explained

MySQL BETWEEN

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

Examples Explained

MySQL Aliases

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

Examples Explained

MySQL Joins

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

Examples Explained

MySQL UNION

UNION UNION ALL UNION with WHERE UNION ALL with WHERE

Examples Explained

MySQL GROUP BY

GROUP BY GROUP BY and ORDER BY GROUP BY with JOIN

Examples Explained

MySQL HAVING

HAVING and GROUP BY HAVING and ORDER BY HAVING and WHERE

Examples Explained

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

Examples Explained

MySQL CASE

Examples Explained

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

Examples Explained

MySQL Database

MySQL Database tutorials can be found here:

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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