Ungaphindaphinda kanjani ukwakheka kwetafula ku-database ye-MySQL?Kopisha isitatimende sokuqukethwe kwedatha yethebula

MySQL databaseUngakopisha kanjani ukwakheka kwetafula ku-?Kopisha isitatimende sokuqukethwe kwedatha yethebula

MySQLKopisha ithebula

Uma sidinga ukuphindaphinda ngokuphelele ithebula ledatha ye-MySQL, okuhlanganisa ukwakheka kwethebula, izinkomba, amanani azenzakalelayo, njll.Uma usebenzisa kuphelaDALA ITHEBULA ... KHETHAumyalo awunakwenzeka.

Lesi sahluko sizokwethula indlela yokukopisha ngokuphelele ithebula ledatha ye-MySQL, izinyathelo zimi kanje:

• 使用BONISA DALA ITHEBULAumyalo thola ukudala ithebula ledatha (DALA ITHEBULA) isitatimende, esiqukethe isakhiwo, inkomba, njll. yethebula ledatha lokuqala.
• Kopisha isitatimende se-SQL esivezwe ngomyalo olandelayo, shintsha igama lethebula ledatha, futhi wenze isitatimende se-SQL. Ukwakheka kwethebula ledatha kuzokopishwa ngokuphelele ngomyalo ongenhla.
• Uma ufuna ukukopisha okuqukethwe kwethebula, ungasebenzisaFAKA KU ... KHETHA isitatimende ukufeza.

Isibonelo

Zama isibonelo esilandelayo ukuze uphindaphinde ithebula elithi chenweiliang_tbl.

isinyathelo sokuqala:

Thola ukwakheka okuphelele kwethebula ledatha.

mysql > SHOW CREATE TABLE chenweiliang_tbl \ G ; *************************** 1. row ******************** ******* Table ：chenweiliang_tbl
 Create Table ：CREATE TABLE`chenweiliang_tbl` （`chenweiliang_id` int （11 ）NOT NULL auto_increment ，`chenweiliang_title` varchar （100 ）NOT NULL default '' ，'chenweiliang_author` varchar （40 ）NOT NULL 默认'' ，
 
         
   
   
   
  `submission_date` 日期默认NULL ，
  PRIMARY KEY   （`chenweiliang_id` ），
  UNIQUE KEY `AUTHOR_INDEX` （`chenweiliang_author` ））ENGINE = InnoDB的1 行中集合（0.00 秒） 
 
  

错误：没有指定查询

Isinyathelo sesibili:

Shintsha igama lethebula ledatha lesitatimende se-SQL futhi wenze isitatimende se-SQL.

mysql > CREATE TABLE`clone_tbl` （- > `chenweiliang_id` int （11 ）NOT NULL auto_increment ，- > `chenweiliang_title` varchar （100 ）NOT NULL default '' ，- > `chenweiliang_author` varchar （40 ）NOT NULL default '' ，- > `submission_date` 日期默认为NULL ，- > PRIMARY KEY   （`chenweiliang_id` ），- > UNIQUE KEY 
    
    
    
   
  
  `AUTHOR_INDEX` （`chenweiliang_author` ）- > ）ENGINE = InnoDB ; 查询OK ，0 行受影响（1.80 秒） 
 
 

Isinyathelo sesithathu:

Ngemva kokwenza isinyathelo sesibili, uzodala ithebula le-clone elisha le-clone_tbl kusizindalwazi.Uma ufuna ukukopisha idatha kusuka kuthebula ledatha ongalisebenzisaFAKA KU ... KHETHA isitatimende ukufeza.

mysql > INSERT INTO clone_tbl （chenweiliang_id ，- >                         chenweiliang_title ，- >                         chenweiliang_author ，- >                         submission_date ）- > SELECT chenweiliang_id ，chenweiliang_title ，- >         chenweiliang_author ，submission_date
     - > FROM chenweiliang_tbl ; 查询OK ，3 行受影响（0.07 秒）记录：3 重复：0
    
    
    
    
    
 
      警告：0 

Ngemva kokwenza lezi zinyathelo ezingenhla, uzoba nekhophi ephelele yethebula, kuhlanganise nesakhiwo sethebula nedatha yethebula.

Enye indlela yokukopisha ithebula

Enye indlela yokwenza ikhophi egcwele yethebula:

CREATE TABLE targetTable LIKE sourceTable ; 
INSERT INTO targetTable SELECT * FROM sourceTable ;

okunye:

Ungakopisha ezinye zalezi zindawo kuthebula:

CREATE TABLE newadmin AS
 （
    SELECT用户名，密码从管理员
 ）

Ungaqamba kabusha izinkambu zethebula elisanda kwakhiwa:

CREATE TABLE newadmin AS
 （  
    SELECT id ，username AS uname ，password AS pass FROM admin
 ）

Ingxenye yedatha ingakopishwa:

CREATE TABLE newadmin AS
 （
    SELECT * FROM admin WHERE LEFT （username ，1 ）= 's' ）  

Ulwazi lwenkundla kuthebula lungachazwa ngenkathi kwakhiwa ithebula:

CREATE TABLE newadmin
 （
    id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY
）
如
（
    SELECT * FROM admin
 ）