SQL Quick Reference Guide
SELECT [ DISTINCT ] * | LIST OF COLUMNS, FUNCTIONS, CONSTANTS FROM LIST OF TABLES OR VIEWS [ WHERE CONDITION(S) ] [ ORDER BY ORDERING COLUMN(S) [ ASC | DESC ] ] [ GROUP BY GROUPING COLUMN(S) ] [ HAVING CONDITION(S) ]
DELETE FROM TABLE NAME
[ WHERE CONDITION(S) ]
INSERT INTO TABLE NAME
[ (COLUMN LIST) ]
VALUES (VALUE LIST)
UPDATE TABLE NAME
SET COLUMN NAME = VALUE
[ WHERE CONDITION ]
Functions
Function |
Purpose |
---|---|
SUM |
Total of the values in a field. |
AVG |
Average of the values in a field. |
MIN |
Lowest value in a field. |
MAX |
Highest value in a field. |
COUNT |
Number of values in a field, not counting Null (blank) values. |
Predicates
Predicate |
Description |
---|---|
BETWEEN ... AND |
Compares a value to a range formed by two values. |
IN |
Determines whether a value exists in a list of values or a table. |
LIKE |
Compares, in part or in whole, one value with another. |
JOIN |
Joins two tables. |
Data Definition
CREATE TABLE TABLE_NAME
( COLUMN_NAME DATA_TYPE [(SIZE)] COLUMN_CONSTRAINT,
[, other column definitions,...]
[, primary key constraint]
)
ALTER TABLE TABLE_NAME ADD | DROP | MODIFY
( COLUMN_NAME DATA_TYPE [(SIZE)] COLUMN_CONSTRAINT,
[, other column definitions,...]
)
DROP TABLE TABLE_NAME
CREATE [UNIQUE] [ASC | DESC] INDEX INDEX_NAME
ON TABLE_NAME ( COLUMN_LIST )
DROP INDEX INDEX_NAME ON TABLE_NAME
CREATE VIEW VIEW_NAME AS QUERY_NAME
CONSTRAINT CONSTRAINT_NAME
{PRIMARY KEY | UNIQUE | NOT NULL |
REFERENCES FOREIGN_TABLE [(FIELD_LIST)]}
| Tables | Forms | Style Sheets | General Formatting |
| Color Names | Color Codes | Color Tester |
| ASCII Codes | Entities | META Tags |
| SQL Reference | Web Graphics |
every day. Free-CGI.com is always under construction. If you have any comments or
suggestions, please contact free-cgi. Thanks!
| YouTube | Promote | FAQ - Help | Links | Disclaimer | Privacy | Feedback | About |
Copyright © 1995 - 2025 Free CGI. All rights reserved.