Tsab ntawv teev npe
Hauv tsab xov xwm no, peb yuav tshawb nrhiav cov kev coj ua zoo tshaj plaws rau kev hloov pauv ntau ntawm MyISAM mus rau InnoDB cia cav hauv MySQL databases.
Peb yuav qhia koj ib kauj ruam dhau los ntawm cov txheej txheem hloov dua siab tshiab thiab muab cov lus qhia muaj txiaj ntsig thiab ua kom yuam kev kom ntseeg tau tias nws ua tiav zoo thiab nyab xeeb.
Txawm hais tias koj yog tus thawj tswj hwm database lossis tus tsim tawm, phau ntawv qhia no yuav pab koj nkag siab qhov sib txawv ntawm MyISAM thiab InnoDB, thiab vim li cas hloov mus rau InnoDB yog qhov tseem ceeb rau kev ua kom zoo dua qub thiab txhim kho cov ntaub ntawv kev ntseeg siab.
Los ntawm kev ua raws li peb cov kauj ruam ntxaws ntxaws, koj yuav muaj peev xwm hloov koj lub MySQL database mus rau InnoDB cia cav, yog li txhim kho kev ua tau zoo thiab xyuas kom meej tias cov ntaub ntawv muaj kev ruaj ntseg thiab kev ncaj ncees.
Hauv MySQL database system, MyISAM thiab InnoDB yog ob lub tshuab khaws cia. MyISAM nrawm thiab haum rau cov xwm txheej nrog ntau cov haujlwm nyeem.
InnoDB txhawb nqa kev lag luam, cov yuam sij txawv teb chaws, thiab kab-theem xauv, thiab tsim nyog rau cov ntawv thov uas xav tau cov ntaub ntawv kev ncaj ncees thiab kev tswj hwm nyiaj txiag. Yog li, peb yuav ua li cas thaum peb xav tau batch hloov MyISAM ntxhuav rau InnoDB?
Vim li cas thiaj hloov MyISAM rau InnoDB?
Ua ntej, cia peb tham txog vim li cas peb tab tom ua qhov hloov pauv no.
Txawm hais tias MyISAM muaj kev ua tau zoo, nws muaj qhov tsis txaus ntawm cov ntaub ntawv kev ruaj ntseg thiab kev ua tiav ib txhij.
InnoDB muab kev txhawb nqa kev lag luam, uas tuaj yeem ua kom cov ntaub ntawv sib xws thiab tswj cov xwm txheej siab.
1. Kev Ncaj Ncees ntawm Cov Ntaub Ntawv: InnoDB txhawb nqa kev lag luam, uas tso cai rau kev ua haujlwm rov qab thiab xyuas kom meej tias cov ntaub ntawv sib xws.
2. Kev tswj xyuas sib xws: InnoDB siv kev xauv kab-qib, uas yog qhov tsim nyog rau cov ntawv thov sib xws siab.
3. Kev Txhawb Nqa Tus yuam sij txawv teb chaws: InnoDB txhawb nqa cov yuam sij txawv teb chaws, uas tuaj yeem ua kom muaj kev ncaj ncees ntawm cov ntaub ntawv.
Txoj kev los batch hloov MyISAM rau InnoDB
Peb tuaj yeem siv ib nqe lus SQL los tsim cov nqe lus hloov dua siab tshiab rau txhua lub rooj thiab tom qab ntawd coj lawv txhua lub sijhawm.
Qhov no suab nyuaj, tab sis nws ua tau yooj yim heev. Tsuas yog ob peb kauj ruam xwb.
Kauj ruam 1: Xaiv database
Ua ntej, xyuas kom tseeb tias koj tau xaiv cov ntaub ntawv koj xav ua haujlwm rau. Cov lus txib hauv qab no tuaj yeem siv tau:
mysql
USE 你要操作的数据库名;
Kauj ruam 2: Tsim cov nqe lus hloov dua siab tshiab
Tom ntej no, peb yuav tsum tsim cov SQL nqe lus uas hloov tag nrho MyISAM cov lus rau InnoDB cov lus.
Qhov no tuaj yeem ua tau los ntawm kev nug information_schema.tables rooj ua kom tiav.
Khiav SQL nqe lus hauv qab no:
SELECT CONCAT('ALTER TABLE ',table_name,' ENGINE=InnoDB;')
FROM information_schema.tables
WHERE table_schema="你要操作的数据库名" AND ENGINE="MyISAM";Cov nqe lus no tsim ib txheej ntawm ALTER TABLE nqe lus uas hloov lub cav cia ntawm txhua lub rooj MyISAM rau InnoDB.
Kauj ruam 3: Ua raws li cov lus qhia hloov dua siab tshiab
Luam cov txiaj ntsig uas tau tsim los ntawm cov kauj ruam dhau los, thiab AI tuaj yeem pab peb lim cov ciam teb tau yooj yim.
Sau cov hauv qab no rau hauv ChatGPT :
请帮我过滤以下边框：
+--------------------------------------------------------------+
| ALTER TABLE table1 ENGINE=InnoDB; |
| ALTER TABLE table2 ENGINE=InnoDB; |
| ALTER TABLE table3 ENGINE=InnoDB; |
+--------------------------------------------------------------+
Tom qab ntawd, thaum khiav hauv MySQL, MySQL yuav ua cov lus ALTER TABLE nyob rau hauv ib ntu los hloov tag nrho MyISAM ntxhuav rau InnoDB cov lus.
Piv txwv
Nco ntsoov tias cov ntaub ntawv koj xav tau ua haujlwm muaj npe example_db, ua cov kauj ruam hauv qab no:
- Xaiv database:
USE example_db;
- Tsim cov nqe lus hloov dua siab tshiab:
SELECT CONCAT('ALTER TABLE ',table_name,' ENGINE=InnoDB;')
FROM information_schema.tables
WHERE table_schema="example_db" AND ENGINE="MyISAM";- Luam cov nqe lus tsim tawm thiab ua nws hauv MySQL:
ALTER TABLE table1 ENGINE=InnoDB;
ALTER TABLE table2 ENGINE=InnoDB;
Ceev faj
Ua ntej ua qhov kev hloov pauv batch no, muaj ob peb lub ntsiab lus kom nco ntsoov:
1. Kev Thaub Qab Cov Ntaub Ntawv: Ua ntej ua qhov kev hloov pauv ntau zaus, xyuas kom meej tias tau ua tiav kev thaub qab tag nrho ntawm lub hauv paus ntaub ntawv kom tiv thaiv kev poob cov ntaub ntawv.
2. Ib puag ncig sim: Nws yog qhov zoo tshaj plaws los sim hauv ib puag ncig sim ua ntej kom ntseeg tau tias cov txheej txheem hloov pauv yuav tsis cuam tshuam rau kev ua haujlwm ib txwm ntawm daim ntawv thov.
3. Kev tso cai rau database: Xyuas kom koj muaj kev tso cai txaus rau database los ua haujlwm ALTER TABLE.
nyob rau hauv xaus
Nrog rau cov kauj ruam saum toj no, peb tuaj yeem yooj yim batch hloov tag nrho MyISAM cov ntxhuav hauv MySQL database rau InnoDB cov lus. Ua li no tuaj yeem tsis tsuas yog txhim kho cov peev txheej ua tiav ntawm cov ntaub ntawv, tab sis kuj txhim kho kev ruaj ntseg thiab kev ncaj ncees ntawm cov ntaub ntawv.
Kuv vam tias tsab xov xwm no tuaj yeem pab koj nkag siab zoo dua thiab ua haujlwm MySQL database. Yog hais tias koj muaj lus nug los yog tswv yim, thov sau ib tsab ntawv nyob rau hauv cov lus qhia.
Qhov ntawd yog txhua yam hais txog MyISAM batch hloov dua siab tshiab rau InnoDB. Tam sim no koj tuaj yeem sim nws!
🔧💡Xav paub yuav ua li cas hloov lub rooj InnoDB mus rau MyISAM lub cav siv phpMyAdmin ? Tsab xov xwm no muab cov kauj ruam thiab cov lus qhia kom ntxaws los pab koj ua tiav qhov kev hloov pauv yooj yim!
👇 xav kom nyeem ntxiv👇
Nyem qhov txuas kom kawm paub ntau ntxiv txog kev hloov pauv cov ntaub ntawv thiab txhim kho koj cov kev tswj hwm database! 📚 IB
Vam tias, tsab xov xwm "Yuav ua li cas Batch Hloov MyISAM rau InnoDB Cia Cav hauv MySQL Databases?" qhia rau ntawm Chen Weiliang lub blog ( https://www.chenweiliang.com/ ) yuav pab tau koj.
Xav qhia qhov txuas ntawm tsab xov xwm no: https://www.chenweiliang.com/cwl-31790.html