Benutzer-Werkzeuge
mysql
Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung | Nächste Überarbeitung Beide Seiten der Revision | ||
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mysql [2011/08/03 16:01] admin |
mysql [2011/08/03 16:04] admin |
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| | 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'; | | | 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'; | | ||
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| - | | 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$"; | | + | | Use a regular expression to find records. Use "REGEXP BINARY" to force case-sensitivity. This finds any record beginning with a. | SELECT * FROM [table name] WHERE rec RLIKE "\^a$"; | |
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| | Show unique records. | SELECT DISTINCT [column name] FROM [table name]; | | | Show unique records. | SELECT DISTINCT [column name] FROM [table name]; | | ||
| Zeile 129: | Zeile 129: | ||
| | Count rows. | SELECT COUNT(*) FROM [table name]; | | | Count rows. | SELECT COUNT(*) FROM [table name]; | | ||
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| - | | Join tables on common columns. | select lookup.illustrationid, lookup.personid,person.birthday from lookup | + | | 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; | | + | | | 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')); | | | 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). | [mysql dir]/bin/mysqladmin -u root -h hostname.blah.org -p password 'new-password' | | | Change a users password.(from unix shell). | [mysql dir]/bin/mysqladmin -u root -h hostname.blah.org -p password 'new-password' | | ||
| Zeile 149: | Zeile 149: | ||
| | Dump a table from a database. | [mysql dir]/bin/mysqldump -c -u username -ppassword databasename tablename > /tmp/databasename.tablename.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 | | | Restore database (or database table) from backup. | [mysql dir]/bin/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), | + | | 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)); | |
| - | 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'); | | | 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'); | | ||
mysql.txt · Zuletzt geändert: 2013/06/05 09:01 von admin
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