SQL 快速参考

来自 SQL 快速参考。可以打印它，以备日常使用。

SQL 语句

语句 语法
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_name or 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