SQL Syntax
Select all the records from a specific table ("Customers")
Example Explained
SQL SELECT
SELECT Column SELECT *
Examples Explained
SQL SELECT DISTINCT
SELECT DISTINCT
Examples Explained
SQL WHERE
WHERE Clause Text Fields vs. Numeric Fields
Examples Explained
SQL AND, OR and NOT Operators
AND OR NOT Combining AND, OR and NOT
Examples Explained
SQL ORDER BY
ORDER BY ORDER BY DESC ORDER BY Several Columns
Examples Explained
SQL NULL Values
IS NULL Operator IS NOT NULL Operator
Examples Explained
SQL SELECT TOP
SELECT TOP LIMIT SELECT TOP PERCENT SELECT TOP and add a WHERE Clause
Examples Explained
SQL MIN() and MAX()
MIN() MAX()
Examples Explained
SQL COUNT, AVG() and SUM()
COUNT() AVG() SUM()
Examples Explained
SQL LIKE
LIKE - select all table rows starting with "a" LIKE - select all table rows ending with "a" LIKE - select all table rows that have "or" in any position LIKE - select all table rows that have "r" in the second position LIKE - select all table rows that starts with "a" and ends with "o" LIKE - select all table rows that does NOT start with "a"
Examples Explained
SQL Wildcards
Using the % Wildcard Using the _ Wildcard Using the [charlist] Wildcard Using the [!charlist] Wildcard
Examples Explained
SQL IN
IN NOT IN
Examples Explained
SQL BETWEEN
BETWEEN NOT BETWEEN BETWEEN with IN BETWEEN Text Values NOT BETWEEN Text Values
Examples Explained
SQL Aliases
Alias for Columns Two Aliases Alias for Tables
Examples Explained
SQL Joins
INNER JOIN LEFT JOIN RIGHT JOIN Self JOIN
Examples Explained
SQL UNION
UNION UNION ALL UNION With WHERE UNION ALL With WHERE
Examples Explained
SQL GROUP BY
GROUP BY GROUP BY and ORDER BY GROUP BY With JOIN
Examples Explained
SQL HAVING
HAVING and GROUP BY HAVING and ORDER BY
Examples Explained
SQL EXISTS
EXISTS
Example Explained
SQL ANY and ALL
ANY ALL
Examples Explained
SQL CASE
CASE 1 CASE 2
Examples Explained
SQL Comments
Single Line Comments Single Line Comments At The End Of a Line Multi-line Comments
Examples Explained
SQL Database
SQL Database tutorials can be found here:
SQL Create DB SQL Drop DB SQL Backup DB SQL Create Table SQL Drop Table SQL Alter Table SQL Constraints SQL Not Null SQL Unique SQL Primary Key SQL Foreign Key SQL Check SQL Default SQL Index SQL Auto Increment SQL Dates SQL Views SQL Injection SQL Hosting