SQL Quick Reference From W3Schools

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SQL Quick Reference From W3Schools



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SQL Statement Syntax
AND / OR SELECT column_name(s)

FROM table_name

WHERE condition

AND|OR condition
ALTER TABLE ALTER TABLE table_name

ADD column_name datatype

or


ALTER TABLE table_name

DROP COLUMN column_name
AS (alias) SELECT column_name AS column_alias

FROM table_name

or


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 TABLE CREATE TABLE table_name

(

column_name1 data_type,

column_name2 data_type,

column_name3 data_type,

...

)
CREATE INDEX CREATE INDEX index_name

ON table_name (column_name)

or


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 DELETE FROM table_name

WHERE some_column=some_value

or


DELETE FROM table_name

(Note: Deletes the entire table!!)


DELETE * FROM table_name

(Note: Deletes the entire table!!)
DROP DATABASE DROP DATABASE database_name
DROP INDEX DROP INDEX table_name.index_name (SQL Server)

DROP INDEX index_name ON table_name (MS Access)

DROP INDEX index_name (DB2/Oracle)

ALTER TABLE table_name

DROP INDEX index_name (MySQL)
DROP TABLE DROP TABLE table_name
EXISTS IF EXISTS (SELECT * FROM table_name WHERE id = ?)
BEGIN
--do what needs to be done if exists
END
ELSE
BEGIN
--do what needs to be done if not
END
GROUP BY SELECT column_name, aggregate_function(column_name)

FROM table_name

WHERE column_name operator value

GROUP BY column_name
HAVING SELECT column_name, aggregate_function(column_name)

FROM table_name

WHERE column_name operator value

GROUP BY column_name

HAVING aggregate_function(column_name) operator value
IN SELECT column_name(s)

FROM table_name

WHERE column_name

IN (value1,value2,..)
INSERT INTO INSERT INTO table_name

VALUES (value1, value2, value3,....)

or


INSERT INTO table_name

(column1, column2, column3,...)

VALUES (value1, value2, value3,....)
INNER JOIN SELECT column_name(s)

FROM table_name1

INNER JOIN table_name2

ON table_name1.column_name=table_name2.column_name
LEFT JOIN SELECT column_name(s)

FROM table_name1

LEFT JOIN table_name2

ON table_name1.column_name=table_name2.column_name
RIGHT JOIN SELECT column_name(s)

FROM table_name1

RIGHT JOIN table_name2

ON table_name1.column_name=table_name2.column_name
FULL JOIN SELECT column_name(s)

FROM table_name1

FULL JOIN table_name2

ON table_name1.column_name=table_name2.column_name
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 SELECT *

INTO new_table_name [IN externaldatabase]

FROM old_table_name

or


SELECT column_name(s)

INTO new_table_name [IN externaldatabase]

FROM old_table_name
SELECT TOP SELECT TOP number|percent column_name(s)

FROM table_name
TRUNCATE TABLE TRUNCATE TABLE table_name
UNION SELECT column_name(s) FROM table_name1

UNION

SELECT column_name(s) FROM table_name2
UNION ALL SELECT column_name(s) FROM table_name1

UNION ALL

SELECT column_name(s) FROM table_name2
UPDATE UPDATE table_name

SET column1=value, column2=value,...

WHERE some_column=some_value
WHERE SELECT column_name(s)

FROM table_name

WHERE column_name operator value

Source : https://www.w3schools.com/sql/sql_quickref.asp




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