SQL Quick Reference from W3Schools. Print it, and fold it in your pocket.
| Statement |
Syntax |
| AND / OR |
SELECT column_name(s)
FROM table_name
WHERE condition
AND|OR condition |
| ALTER TABLE (add column) |
ALTER TABLE table_name
ADD column_name datatype |
| ALTER TABLE (drop column) |
ALTER TABLE table_name
DROP COLUMN column_name |
| AS (alias for column) |
SELECT column_name AS column_alias
FROM table_name |
| AS (alias for table) |
SELECT column_name
FROM table_name AS table_alias |
| BETWEEN |
SELECT column_name(s)
FROM table_name
WHERE column_name
BETWEEN value1 AND value2 |
| CREATE DATABASE |
CREATE DATABASE database_name |
| CREATE INDEX |
CREATE INDEX index_name
ON table_name (column_name) |
| CREATE TABLE |
CREATE TABLE table_name
(
column_name1 data_type,
column_name2 data_type,
.......
) |
| CREATE UNIQUE INDEX |
CREATE UNIQUE INDEX index_name
ON table_name (column_name) |
| CREATE VIEW |
CREATE VIEW view_name AS
SELECT column_name(s)
FROM table_name
WHERE condition |
| DELETE FROM |
DELETE FROM table_name
(Note: Deletes the entire table!!)or
DELETE FROM table_name
WHERE condition |
| DROP DATABASE |
DROP DATABASE database_name |
| DROP INDEX |
DROP INDEX table_name.index_name |
| DROP TABLE |
DROP TABLE table_name |
| GROUP BY |
SELECT column_name1,SUM(column_name2)
FROM table_name
GROUP BY column_name1 |
| HAVING |
SELECT column_name1,SUM(column_name2)
FROM table_name
GROUP BY column_name1
HAVING SUM(column_name2) condition value |
| IN |
SELECT column_name(s)
FROM table_name
WHERE column_name
IN (value1,value2,..) |
| INSERT INTO |
INSERT INTO table_name
VALUES (value1, value2,....)or
INSERT INTO table_name
(column_name1, column_name2,...)
VALUES (value1, value2,....) |
| LIKE |
SELECT column_name(s)
FROM table_name
WHERE column_name
LIKE pattern |
| ORDER BY |
SELECT column_name(s)
FROM table_name
ORDER BY column_name [ASC|DESC] |
| SELECT |
SELECT column_name(s)
FROM table_name |
| SELECT * |
SELECT *
FROM table_name |
| SELECT DISTINCT |
SELECT DISTINCT column_name(s)
FROM table_name |
SELECT INTO
(used to create backup copies of
tables) |
SELECT *
INTO new_table_name
FROM original_table_nameor
SELECT column_name(s)
INTO new_table_name
FROM original_table_name |
TRUNCATE TABLE
(deletes only the data inside
the table) |
TRUNCATE TABLE table_name |
| UPDATE |
UPDATE table_name
SET column_name=new_value
[, column_name=new_value]
WHERE column_name=some_value |
| WHERE |
SELECT column_name(s)
FROM table_name
WHERE condition |
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