SQL 语句大全

SQL 语句

 

语句语法AND / ORSELECT column_name(s)
FROM table_name
WHERE condition
AND|OR conditionALTER TABLE (add column)ALTER TABLE table_name 
ADD column_name datatypeALTER TABLE (drop column)ALTER TABLE table_name 
DROP COLUMN column_nameAS (alias for column)SELECT column_name AS column_alias
FROM table_nameAS (alias for table)SELECT column_name
FROM table_name  AS table_aliasBETWEENSELECT column_name(s)
FROM table_name
WHERE column_name
BETWEEN value1 AND value2CREATE DATABASECREATE DATABASE database_nameCREATE INDEXCREATE INDEX index_name
ON table_name (column_name)CREATE TABLECREATE TABLE table_name
(
column_name1 data_type,
column_name2 data_type,
.......
)CREATE UNIQUE INDEXCREATE UNIQUE INDEX index_name
ON table_name (column_name)CREATE VIEWCREATE VIEW view_name AS
SELECT column_name(s)
FROM table_name
WHERE conditionDELETE FROMDELETE FROM table_name 
(Note: Deletes the entire table!!)

or

DELETE FROM table_name
WHERE condition

DROP DATABASEDROP DATABASE database_nameDROP INDEXDROP INDEX table_name.index_nameDROP TABLEDROP TABLE table_nameGROUP BYSELECT column_name1,SUM(column_name2)
FROM table_name
GROUP BY column_name1HAVINGSELECT column_name1,SUM(column_name2)
FROM table_name
GROUP BY column_name1
HAVING SUM(column_name2) condition valueINSELECT column_name(s)
FROM table_name
WHERE column_name
IN (value1,value2,..)INSERT INTOINSERT INTO table_name
VALUES (value1, value2,....)

or

INSERT INTO table_name
(column_name1, column_name2,...)
VALUES (value1, value2,....)

LIKESELECT column_name(s)
FROM table_name
WHERE column_name
LIKE patternORDER BYSELECT column_name(s)
FROM table_name
ORDER BY column_name [ASC|DESC]SELECTSELECT column_name(s)
FROM table_nameSELECT *SELECT *
FROM table_nameSELECT DISTINCTSELECT DISTINCT column_name(s)
FROM table_nameSELECT 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_nameUPDATEUPDATE table_name
SET column_name=new_value
[, column_name=new_value]
WHERE column_name=some_valueWHERESELECT column_name(s)
FROM table_name
WHERE condition