MySQL/Syntax: Unterschied zwischen den Versionen
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To login (from unix shell) use -h only if needed. | To login (from unix shell) use -h only if needed. | ||
− | # [mysql dir]/bin/mysql -h hostname -u root -p | + | # [mysql dir]/bin/mysql -h hostname -u root -p |
Create a database on the sql server. | Create a database on the sql server. | ||
− | mysql> create database [databasename]; | + | mysql> create database [databasename]; |
List all databases on the sql server. | List all databases on the sql server. | ||
− | mysql> show databases; | + | mysql> show databases; |
Switch to a database. | Switch to a database. | ||
− | mysql> use [db name]; | + | mysql> use [db name]; |
To see all the tables in the db. | To see all the tables in the db. | ||
− | mysql> show tables; | + | mysql> show tables; |
To see database's field formats. | To see database's field formats. | ||
− | mysql> describe [table name]; | + | mysql> describe [table name]; |
To delete a db. | To delete a db. | ||
− | mysql> drop database [database name]; | + | mysql> drop database [database name]; |
To delete a table. | To delete a table. | ||
− | mysql> drop table [table name]; | + | mysql> drop table [table name]; |
Show all data in a table. | Show all data in a table. | ||
− | mysql> SELECT * FROM [table name]; | + | mysql> SELECT * FROM [table name]; |
Returns the columns and column information pertaining to the designated table. | Returns the columns and column information pertaining to the designated table. | ||
− | mysql> show columns from [table name]; | + | mysql> show columns from [table name]; |
Show certain selected rows with the value "whatever". | Show certain selected rows with the value "whatever". | ||
− | mysql> SELECT * FROM [table name] WHERE [field name] = "whatever"; | + | mysql> SELECT * FROM [table name] WHERE [field name] = "whatever"; |
Show all records containing the name "Bob" AND the phone number '3444444'. | Show all records containing the name "Bob" AND the phone number '3444444'. | ||
− | mysql> SELECT * FROM [table name] WHERE name = "Bob" AND phone_number = '3444444'; | + | mysql> 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. | Show all records not containing the name "Bob" AND the phone number '3444444' order by the phone_number field. | ||
− | mysql> SELECT * FROM [table name] WHERE name != "Bob" AND phone_number = '3444444' order by phone_number; | + | mysql> 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'. | Show all records starting with the letters 'bob' AND the phone number '3444444'. | ||
− | mysql> SELECT * FROM [table name] WHERE name like "Bob%" AND phone_number = '3444444'; | + | mysql> SELECT * FROM [table name] WHERE name like "Bob%" AND phone_number = '3444444'; |
Show all records starting with the letters 'bob' AND the phone number '3444444' limit to records 1 through 5. | Show all records starting with the letters 'bob' AND the phone number '3444444' limit to records 1 through 5. | ||
− | mysql> SELECT * FROM [table name] WHERE name like "Bob%" AND phone_number = '3444444' limit 1,5; | + | mysql> SELECT * FROM [table name] WHERE name like "Bob%" AND phone_number = '3444444' limit 1,5; |
Use a regular expression to find records. Use "REGEXP BINARY" to force case-sensitivity. This finds any record beginning with a. | Use a regular expression to find records. Use "REGEXP BINARY" to force case-sensitivity. This finds any record beginning with a. | ||
− | mysql> SELECT * FROM [table name] WHERE rec RLIKE "^a"; | + | mysql> SELECT * FROM [table name] WHERE rec RLIKE "^a"; |
Show unique records. | Show unique records. | ||
− | mysql> SELECT DISTINCT [column name] FROM [table name]; | + | mysql> SELECT DISTINCT [column name] FROM [table name]; |
Show selected records sorted in an ascending (asc) or descending (desc). | Show selected records sorted in an ascending (asc) or descending (desc). | ||
− | mysql> SELECT [col1],[col2] FROM [table name] ORDER BY [col2] DESC; | + | mysql> SELECT [col1],[col2] FROM [table name] ORDER BY [col2] DESC; |
Return number of rows. | Return number of rows. | ||
− | mysql> SELECT COUNT(*) FROM [table name]; | + | mysql> SELECT COUNT(*) FROM [table name]; |
Sum column. | Sum column. | ||
− | mysql> SELECT SUM(*) FROM [table name]; | + | mysql> SELECT SUM(*) FROM [table name]; |
Join tables on common columns. | Join tables on common columns. | ||
− | mysql> 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; | + | mysql> 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; |
Creating a new user. Login as root. Switch to the MySQL db. Make the user. Update privs. | Creating a new user. Login as root. Switch to the MySQL db. Make the user. Update privs. | ||
− | # mysql -u root -p | + | # mysql -u root -p |
− | mysql> use mysql; | + | mysql> use mysql; |
− | mysql> INSERT INTO user (Host,User,Password) VALUES('%','username',PASSWORD('password')); | + | mysql> INSERT INTO user (Host,User,Password) VALUES('%','username',PASSWORD('password')); |
− | mysql> flush privileges; | + | mysql> flush privileges; |
− | Change a users password from unix shell. | + | Change a users password from unix shell.<br/> |
+ | '''Better use 'GRANT'-syntax''' | ||
− | # [mysql dir]/bin/mysqladmin -u username -h hostname.blah.org -p password 'new-password' | + | # [mysql dir]/bin/mysqladmin -u username -h hostname.blah.org -p password 'new-password' |
Change a users password from MySQL prompt. Login as root. Set the password. Update privs. | Change a users password from MySQL prompt. Login as root. Set the password. Update privs. | ||
− | # mysql -u root -p | + | # mysql -u root -p |
− | mysql> SET PASSWORD FOR 'user'@'hostname' = PASSWORD('passwordhere'); | + | mysql> SET PASSWORD FOR 'user'@'hostname' = PASSWORD('passwordhere'); |
− | mysql> flush privileges; | + | mysql> flush privileges; |
− | + | ||
− | # /etc/init.d/mysql stop | + | ===Recover a MySQL root password.=== |
− | # mysqld_safe --skip-grant-tables & | + | Stop the MySQL server process. Start again with no grant tables. Login to MySQL as root. Set new password. Exit MySQL and restart MySQL server. |
− | # mysql -u root | + | |
− | mysql> use mysql; | + | # /etc/init.d/mysql stop |
− | mysql> update user set password=PASSWORD("newrootpassword") where User='root'; | + | # mysqld_safe --skip-grant-tables & |
− | mysql> flush privileges; | + | # mysql -u root |
− | mysql> quit | + | mysql> use mysql; |
− | # /etc/init.d/mysql stop | + | mysql> update user set password=PASSWORD("newrootpassword") where User='root'; |
− | # /etc/init.d/mysql start | + | mysql> flush privileges; |
+ | mysql> quit | ||
+ | # /etc/init.d/mysql stop | ||
+ | # /etc/init.d/mysql start | ||
Set a root password if there is on root password. | Set a root password if there is on root password. | ||
− | # mysqladmin -u root password newpassword | + | # mysqladmin -u root password newpassword |
Update a root password. | Update a root password. | ||
− | # mysqladmin -u root -p oldpassword newpassword | + | # mysqladmin -u root -p oldpassword newpassword |
Allow the user "bob" to connect to the server from localhost using the password "passwd". Login as root. Switch to the MySQL db. Give privs. Update privs. | Allow the user "bob" to connect to the server from localhost using the password "passwd". Login as root. Switch to the MySQL db. Give privs. Update privs. | ||
− | # mysql -u root -p | + | # mysql -u root -p |
− | mysql> use mysql; | + | mysql> use mysql; |
− | mysql> grant usage on *.* to bob@localhost identified by 'passwd'; | + | mysql> grant usage on *.* to bob@localhost identified by 'passwd'; |
− | mysql> flush privileges; | + | mysql> flush privileges; |
Give user privilages for a db. Login as root. Switch to the MySQL db. Grant privs. Update privs. | Give user privilages for a db. Login as root. Switch to the MySQL db. Grant privs. Update privs. | ||
− | # mysql -u root -p | + | # mysql -u root -p |
− | mysql> use mysql; | + | mysql> use mysql; |
− | mysql> INSERT INTO user (Host,Db,User,Select_priv,Insert_priv,Update_priv,Delete_priv,Create_priv,Drop_priv) VALUES ('%','databasename','username','Y','Y','Y','Y','Y','N'); | + | mysql> INSERT INTO user (Host,Db,User,Select_priv,Insert_priv,Update_priv,Delete_priv,Create_priv,Drop_priv) VALUES ('%','databasename','username','Y','Y','Y','Y','Y','N'); |
− | mysql> flush privileges; | + | mysql> flush privileges; |
or | or | ||
− | mysql> grant all privileges on databasename.* to username@localhost; | + | mysql> grant all privileges on databasename.* to username@localhost; |
− | mysql> flush privileges; | + | mysql> flush privileges; |
To update info already in a table. | To update info already in a table. | ||
− | mysql> UPDATE [table name] SET Select_priv = 'Y',Insert_priv = 'Y',Update_priv = 'Y' where [field name] = 'user'; | + | mysql> 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 a row(s) from a table. | ||
− | mysql> DELETE from [table name] where [field name] = 'whatever'; | + | mysql> DELETE from [table name] where [field name] = 'whatever'; |
Update database permissions/privilages. | Update database permissions/privilages. | ||
− | mysql> flush privileges; | + | mysql> flush privileges; |
Delete a column. | Delete a column. | ||
− | mysql> alter table [table name] drop column [column name]; | + | mysql> alter table [table name] drop column [column name]; |
Add a new column to db. | Add a new column to db. | ||
− | mysql> alter table [table name] add column [new column name] varchar (20); | + | mysql> alter table [table name] add column [new column name] varchar (20); |
Change column name. | Change column name. | ||
− | mysql> alter table [table name] change [old column name] [new column name] varchar (50); | + | mysql> alter table [table name] change [old column name] [new column name] varchar (50); |
Make a unique column so you get no dupes. | Make a unique column so you get no dupes. | ||
− | mysql> alter table [table name] add unique ([column name]); | + | mysql> alter table [table name] add unique ([column name]); |
Make a column bigger. | Make a column bigger. | ||
− | mysql> alter table [table name] modify [column name] VARCHAR(3); | + | mysql> alter table [table name] modify [column name] VARCHAR(3); |
Delete unique from table. | Delete unique from table. | ||
− | mysql> alter table [table name] drop index [colmn name]; | + | mysql> alter table [table name] drop index [colmn name]; |
Load a CSV file into a table. | Load a CSV file into a table. | ||
− | mysql> LOAD DATA INFILE '/tmp/filename.csv' replace INTO TABLE [table name] FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n' (field1,field2,field3); | + | mysql> 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. | Dump all databases for backup. Backup file is sql commands to recreate all db's. | ||
− | # [mysql dir]/bin/mysqldump -u root -ppassword --opt >/tmp/alldatabases.sql | + | # [mysql dir]/bin/mysqldump -u root -ppassword --opt >/tmp/alldatabases.sql |
Dump one database for backup. | Dump one database for backup. | ||
− | # [mysql dir]/bin/mysqldump -u username -ppassword --databases databasename >/tmp/databasename.sql | + | # [mysql dir]/bin/mysqldump -u username -ppassword --databases databasename >/tmp/databasename.sql |
Dump a table from a database. | Dump a table from a database. | ||
− | # [mysql dir]/bin/mysqldump -c -u username -ppassword databasename tablename > /tmp/databasename.tablename.sql | + | # [mysql dir]/bin/mysqldump -c -u username -ppassword databasename tablename > /tmp/databasename.tablename.sql |
Restore database (or database table) from backup. | Restore database (or database table) from backup. | ||
− | # [mysql dir]/bin/mysql -u username -ppassword databasename < /tmp/databasename.sql | + | # [mysql dir]/bin/mysql -u username -ppassword databasename < /tmp/databasename.sql |
Create Table Example 1. | Create Table Example 1. | ||
− | mysql> 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)); | + | mysql> 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 Example 2. | ||
− | mysql> create table [table name] (personid int(50) not null auto_increment primary key,firstname varchar(35),middlename varchar(50),lastnamevarchar(50) default 'bato'); | + | mysql> create table [table name] (personid int(50) not null auto_increment primary key,firstname varchar(35),middlename varchar(50),lastnamevarchar(50) default 'bato'); |
Version vom 25. August 2009, 09:51 Uhr
DESCRIBE tabelle;
SET PASSWORD FOR openser@'%'=PASSWORD('123456'); SET PASSWORD FOR openser@localhost=PASSWORD('123456');
GRANT ALL PRIVILEGES ON asterisk.* TO asteriskuser@localhost IDENTIFIED BY 'amp109';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
Recover a MySQL root password. Stop the MySQL server process. Start again with no grant tables. Login to MySQL as root. Set new password. Exit MySQL and restart MySQL server.
# /etc/init.d/mysql stop # mysqld_safe --skip-grant-tables & # mysql -u root mysql> use mysql; mysql> update user set password=PASSWORD("newrootpassword") where User='root'; mysql> flush privileges; mysql> quit # /etc/init.d/mysql stop # /etc/init.d/mysql start
SELECT dl . * , ht.typ, h.hersteller INTO OUTFILE "/tmp/goober_downloads.txt" FIELDS TERMINATED BY ',' FROM `downloads` dl JOIN handy_typen ht ON dl.handyid = ht.handyid JOIN handy_hersteller h ON dl.herstellerid = h.herstellerid WHERE dldate > '2006-05-14'
To login (from unix shell) use -h only if needed.
# [mysql dir]/bin/mysql -h hostname -u root -p
Create a database on the sql server.
mysql> create database [databasename];
List all databases on the sql server.
mysql> show databases;
Switch to a database.
mysql> use [db name];
To see all the tables in the db.
mysql> show tables;
To see database's field formats.
mysql> describe [table name];
To delete a db.
mysql> drop database [database name];
To delete a table.
mysql> drop table [table name];
Show all data in a table.
mysql> SELECT * FROM [table name];
Returns the columns and column information pertaining to the designated table.
mysql> show columns from [table name];
Show certain selected rows with the value "whatever".
mysql> SELECT * FROM [table name] WHERE [field name] = "whatever";
Show all records containing the name "Bob" AND the phone number '3444444'.
mysql> 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.
mysql> 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'.
mysql> SELECT * FROM [table name] WHERE name like "Bob%" AND phone_number = '3444444';
Show all records starting with the letters 'bob' AND the phone number '3444444' limit to records 1 through 5.
mysql> SELECT * FROM [table name] WHERE name like "Bob%" AND phone_number = '3444444' limit 1,5;
Use a regular expression to find records. Use "REGEXP BINARY" to force case-sensitivity. This finds any record beginning with a.
mysql> SELECT * FROM [table name] WHERE rec RLIKE "^a";
Show unique records.
mysql> SELECT DISTINCT [column name] FROM [table name];
Show selected records sorted in an ascending (asc) or descending (desc).
mysql> SELECT [col1],[col2] FROM [table name] ORDER BY [col2] DESC;
Return number of rows.
mysql> SELECT COUNT(*) FROM [table name];
Sum column.
mysql> SELECT SUM(*) FROM [table name];
Join tables on common columns.
mysql> 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;
Creating a new user. Login as root. Switch to the MySQL db. Make the user. Update privs.
# mysql -u root -p mysql> use mysql; mysql> INSERT INTO user (Host,User,Password) VALUES('%','username',PASSWORD('password')); mysql> flush privileges;
Change a users password from unix shell.
Better use 'GRANT'-syntax
# [mysql dir]/bin/mysqladmin -u username -h hostname.blah.org -p password 'new-password'
Change a users password from MySQL prompt. Login as root. Set the password. Update privs.
# mysql -u root -p mysql> SET PASSWORD FOR 'user'@'hostname' = PASSWORD('passwordhere'); mysql> flush privileges;
Recover a MySQL root password.
Stop the MySQL server process. Start again with no grant tables. Login to MySQL as root. Set new password. Exit MySQL and restart MySQL server.
# /etc/init.d/mysql stop # mysqld_safe --skip-grant-tables & # mysql -u root mysql> use mysql; mysql> update user set password=PASSWORD("newrootpassword") where User='root'; mysql> flush privileges; mysql> quit # /etc/init.d/mysql stop # /etc/init.d/mysql start
Set a root password if there is on root password.
# mysqladmin -u root password newpassword
Update a root password.
# mysqladmin -u root -p oldpassword newpassword
Allow the user "bob" to connect to the server from localhost using the password "passwd". Login as root. Switch to the MySQL db. Give privs. Update privs.
# mysql -u root -p mysql> use mysql; mysql> grant usage on *.* to bob@localhost identified by 'passwd'; mysql> flush privileges;
Give user privilages for a db. Login as root. Switch to the MySQL db. Grant privs. Update privs.
# mysql -u root -p mysql> use mysql; mysql> INSERT INTO user (Host,Db,User,Select_priv,Insert_priv,Update_priv,Delete_priv,Create_priv,Drop_priv) VALUES ('%','databasename','username','Y','Y','Y','Y','Y','N'); mysql> flush privileges;
or
mysql> grant all privileges on databasename.* to username@localhost; mysql> flush privileges;
To update info already in a table.
mysql> UPDATE [table name] SET Select_priv = 'Y',Insert_priv = 'Y',Update_priv = 'Y' where [field name] = 'user';
Delete a row(s) from a table.
mysql> DELETE from [table name] where [field name] = 'whatever';
Update database permissions/privilages.
mysql> flush privileges;
Delete a column.
mysql> alter table [table name] drop column [column name];
Add a new column to db.
mysql> alter table [table name] add column [new column name] varchar (20);
Change column name.
mysql> alter table [table name] change [old column name] [new column name] varchar (50);
Make a unique column so you get no dupes.
mysql> alter table [table name] add unique ([column name]);
Make a column bigger.
mysql> alter table [table name] modify [column name] VARCHAR(3);
Delete unique from table.
mysql> alter table [table name] drop index [colmn name];
Load a CSV file into a table.
mysql> 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.
# [mysql dir]/bin/mysqldump -u root -ppassword --opt >/tmp/alldatabases.sql
Dump one database for backup.
# [mysql dir]/bin/mysqldump -u username -ppassword --databases databasename >/tmp/databasename.sql
Dump a table from a database.
# [mysql dir]/bin/mysqldump -c -u username -ppassword databasename tablename > /tmp/databasename.tablename.sql
Restore database (or database table) from backup.
# [mysql dir]/bin/mysql -u username -ppassword databasename < /tmp/databasename.sql
Create Table Example 1.
mysql> 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.
mysql> create table [table name] (personid int(50) not null auto_increment primary key,firstname varchar(35),middlename varchar(50),lastnamevarchar(50) default 'bato');