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MySQL commands, statements, and clauses

Description

Command

To login (from unix shell) use -h only if needed

mysql -h hostname -u YOUR_USERNAME -p YOUR_PASSWORD

Create a database on the sql server

create database DATABASE_NAME;

List all databases on the sql server.

show databases;

Switch to a database.

use DATABASE_NAME;

To see all the tables in the db.

show tables;

To see database's field formats.

describe TABLE_NAME;

To delete a db.

drop database DATABASE_NAME;

To delete a table.

drop table TABLE_NAME;

Show all data in a table.

SELECT * FROM TABLE_NAME;

Returns the columns and column information pertaining to the designated table.

show columns from TABLE_NAME;

Show certain selected rows with the value "whatever".

SELECT * FROM TABLE_NAME WHERE [field name] = "whatever";

Show all records containing the name "Bob" AND the phone number '3444444'.

SELECT * FROM TABLE_NAME WHERE name = "Bob" AND phone_number = '3444444';

Show all records not containing the name "Bob" AND the phone number '3444444' order by the phone_number field.

SELECT * FROM TABLE_NAME WHERE name != "Bob" AND phone_number = '3444444' order by phone_number;

Show all records starting with the letters 'bob' AND the phone number '3444444'.

SELECT * FROM TABLE_NAME WHERE name like "Bob%" AND phone_number = '3444444';

Use a regular expression to find records. Use "REGEXP BINARY" to force case-sensitivity. This finds any record beginning with a.

SELECT * FROM TABLE_NAME WHERE rec RLIKE "^a$";

Show unique records.

SELECT DISTINCT [column name] FROM TABLE_NAME;

Show selected records sorted in an ascending (asc) or descending (desc).

SELECT [col1],[col2] FROM TABLE_NAME ORDER BY [col2] DESC;

Return number of rows.

SELECT COUNT(*) FROM TABLE_NAME;

Sum column.

SELECT SUM(*) FROM TABLE_NAME;

Join tables on common columns.

select lookup.illustrationid, lookup.personid,person.birthday from lookup
left join person on lookup.personid=person.personid=statement to join birthday in person table with primary illustration id;

Switch to the mysql db. Create a new user.

INSERT INTO TABLE_NAME (Host,User,Password) VALUES('%','user',PASSWORD('password'));

Change a users password.(from unix shell).

mysqladmin -u root -h hostname.blah.org -p password 'new-password'

Change a users password.(from MySQL prompt).

SET PASSWORD FOR 'user'@'hostname' = PASSWORD('passwordhere');

Allow the user "bob" to connect to the server from localhost using the password "passwd"

grant usage on *.* to bob@localhost identified by 'passwd';

Switch to mysql db.Give user privilages for a db.

INSERT INTO TABLE_NAME (Host,Db,User,Select_priv,Insert_priv,Update_priv,Delete_priv,Create_priv,Drop_priv) VALUES ('%','databasename','username','Y','Y','Y','Y','Y','N');

grant all privileges on databasename.* to username@localhost;

To update info already in a table.

UPDATE TABLE_NAME SET Select_priv = 'Y',Insert_priv = 'Y',Update_priv = 'Y' where [field name] = 'user';

Delete a row(s) from a table.

DELETE from TABLE_NAME where [field name] = 'whatever';

Update database permissions/privilages.

FLUSH PRIVILEGES;

Delete a column.

alter table TABLE_NAME drop column [column name];

Add a new column to db.

alter table TABLE_NAME add column [new column name] varchar (20);

Change column name.

alter table TABLE_NAME change [old column name] [new column name] varchar (50);

Make a unique column so you get no dupes.

alter table TABLE_NAME add unique ([column name]);

Make a column bigger.

alter table TABLE_NAME modify [column name] VARCHAR(3);

Delete unique from table.

alter table TABLE_NAME drop index [colmn name];

Load a CSV file into a table.

LOAD DATA INFILE '/tmp/filename.csv' replace INTO TABLE TABLE_NAME FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n' (field1,field2,field3);

Dump all databases for backup. Backup file is sql commands to recreate all db's.

mysqldump -u root -ppassword --opt >/tmp/alldatabases.sql

Dump one database for backup.

mysqldump -u username -ppassword --databases databasename >/tmp/databasename.sql

Dump a table from a database.

mysqldump -c -u username -ppassword databasename tablename > /tmp/databasename.tablename.sql

Restore database (or database table) from backup.

mysql -u username -ppassword databasename < /tmp/databasename.sql

Create Table Example 1.

CREATE TABLE TABLE_NAME (firstname VARCHAR(20), middleinitial VARCHAR(3), lastname VARCHAR(35),suffix VARCHAR(3),
officeid VARCHAR(10),userid VARCHAR(15),username VARCHAR(8),email VARCHAR(35),phone VARCHAR(25), groups
VARCHAR(15),datestamp DATE,timestamp time,pgpemail VARCHAR(255));

Create Table Example 2.

create table TABLE_NAME (personid int(50) not null auto_increment primary key,firstname varchar(35),middlename varchar(50),lastname varchar(50) default 'bato');

ALTER DATABASE ALTER TABLE ALTER VIEW ANALYZE TABLE BACKUP TABLE CACHE INDEX CHANGE MASTER TO CHECK TABLE CHECKSUM TABLE COMMIT CREATE DATABASE CREATE INDEX CREATE TABLE CREATE VIEW DELETE DESCRIBE DO DROP DATABASE DROP INDEX DROP TABLE DROP USER DROP VIEW EXPLAIN FLUSH GRANT HANDLER INSERT JOIN KILL LOAD DATA FROM MASTER LOAD DATA INFILE LOAD INDEX INTO CACHE LOAD TABLE...FROM MASTER LOCK TABLES OPTIMIZE TABLE PURGE MASTER LOGS RENAME TABLE REPAIR TABLE REPLACE RESET RESET MASTER RESET SLAVE RESTORE TABLE REVOKE ROLLBACK ROLLBACK TO SAVEPOINT SAVEPOINT SELECT SET SET PASSWORD SET SQL_LOG_BIN SET TRANSACTION SHOW BINLOG EVENTS SHOW CHARACTER SET SHOW COLLATION SHOW COLUMNS SHOW CREATE DATABASE SHOW CREATE TABLE SHOW CREATE VIEW SHOW DATABASES SHOW ENGINES SHOW ERRORS SHOW GRANTS SHOW INDEX SHOW INNODB STATUS SHOW LOGS SHOW MASTER LOGS SHOW MASTER STATUS SHOW PRIVILEGES SHOW PROCESSLIST SHOW SLAVE HOSTS SHOW SLAVE STATUS SHOW STATUS SHOW TABLE STATUS SHOW TABLES SHOW VARIABLES SHOW WARNINGS START SLAVE START TRANSACTION STOP SLAVE TRUNCATE TABLE UNION UNLOCK TABLES USE

AES_DECRYPT AES_ENCRYPT ASCII BIN BINARY BIT_LENGTH CHAR CHAR_LENGTH CHARACTER_LENGTH COMPRESS CONCAT CONCAT_WS CONV DECODE DES_DECRYPT DES_ENCRYPT ELT ENCODE ENCRYPT EXPORT_SET FIELD FIND_IN_SET HEX INET_ATON INET_NTOA INSERT INSTR LCASE LEFT LENGTH LOAD_FILE LOCATE LOWER LPAD LTRIM MAKE_SET MATCH AGAINST MD5 MID OCT OCTET_LENGTH OLD_PASSWORD ORD PASSWORD POSITION QUOTE REPEAT REPLACE REVERSE RIGHT RPAD RTRIM SHA SHA1 SOUNDEX SPACE STRCMP SUBSTRING SUBSTRING_INDEX TRIM UCASE UNCOMPRESS UNCOMPRESSED_LENGTH UNHEX UPPER

ADDDATE ADDTIME CONVERT_TZ CURDATE CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURTIME DATE DATE_ADD DATE_FORMAT DATE_SUB DATEDIFF DAY DAYNAME DAYOFMONTH DAYOFWEEK DAYOFYEAR EXTRACT FROM_DAYS FROM_UNIXTIME GET_FORMAT HOUR LAST_DAY LOCALTIME LOCALTIMESTAMP MAKEDATE MAKETIME MICROSECOND MINUTE MONTH MONTHNAME NOW PERIOD_ADD PERIOD_DIFF QUARTER SEC_TO_TIME SECOND STR_TO_DATE SUBDATE SUBTIME SYSDATE TIME TIMEDIFF TIMESTAMP TIMESTAMPDIFF TIMESTAMPADD TIME_FORMAT TIME_TO_SEC TO_DAYS UNIX_TIMESTAMP UTC_DATE UTC_TIME UTC_TIMESTAMP WEEK WEEKDAY WEEKOFYEAR YEAR YEARWEEK

ABS ACOS ASIN ATAN ATAN2 AVG BIT_AND BIT_OR BIT_XOR CEIL CEILING COS COT COUNT CRC32 DEGREES EXP FLOOR FORMAT GREATEST GROUP_CONCAT LEAST LN LOG LOG2 LOG10 MAX MIN MOD PI POW POWER RADIANS RAND ROUND SIGN SIN SQRT STD STDDEV SUM TAN TRUNCATE VARIANCE

available_drivers begin_work bind_col bind_columns bind_param bind_param_array bind_param_inout can clone column_info commit connect connect_cached data_sources disconnect do dump_results err errstr execute execute_array execute_for_fetch fetch fetchall_arrayref fetchall_hashref fetchrow_array fetchrow_arrayref fetchrow_hashref finish foreign_key_info func get_info installed_versions last_insert_id looks_like_number neat neat_list parse_dsn parse_trace_flag parse_trace_flags ping prepare prepare_cached primary_key primary_key_info quote quote_identifier rollback rows selectall_arrayref selectall_hashref selectcol_arrayref selectrow_array selectrow_arrayref selectrow_hashref set_err state table_info table_info_all tables trace trace_msg type_info type_info_all Attributes for Handles

mysql_affected_rows mysql_change_user mysql_client_encoding mysql_close mysql_connect mysql_create_db mysql_data_seek mysql_db_name mysql_db_query mysql_drop_db mysql_errno mysql_error mysql_escape_string mysql_fetch_array mysql_fetch_assoc mysql_fetch_field mysql_fetch_lengths mysql_fetch_object mysql_fetch_row mysql_field_flags mysql_field_len mysql_field_name mysql_field_seek mysql_field_table mysql_field_type mysql_free_result mysql_get_client_info mysql_get_host_info mysql_get_proto_info mysql_get_server_info mysql_info mysql_insert_id mysql_list_dbs mysql_list_fields mysql_list_processes mysql_list_tables mysql_num_fields mysql_num_rows mysql_pconnect mysql_ping mysql_query mysql_real_escape_string mysql_result mysql_select_db mysql_stat mysql_tablename mysql_thread_id mysql_unbuffered_query

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MySQL commands, statements, and clauses

Description

Command

MYSQL Statements and clauses

String Functions

Date and Time Functions

Mathematical and Aggregate Functions

Flow Control Functions

Command-Line Utilities

Perl API - using functions and methods built into the Perl DBI with MySQL

PHP API - using functions built into PHP with MySQL

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