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MySQL ?? ???? ??????? ??? ??????? ??

OpenMySqlworkBenchandConnectToTHETTARGETDATABASEUSINGVALIDCREDELINGS.2.GOTODATABASE> REVERSENGINEERTALLACHINTEWIZARD.3. ConfirmorCreateAconnection, thenclickNext.4.selectSchema (s) ToreVerseEngineerFromTheListAntLickNext.5.ChoOSecifipecifiOcificeBaseOb

?????? ?? ? ??? MySQL ?? ??? ???? ??? ??????

MySQLworkBench? ???? ?????? ?? : ??? ??, ? ??? ???, ??? ??? ? ? ????, ???? ???? ??? ?, ?? ?, ?? ? ?? ? ??? EER ??? ????, ??? ???? ???? ???? SQL ?? ???? ??? ?????. 2. MySQL ?? ?? ? ?? : ????? ??? ???? ??, ???, ??, ??? ?? ? ????? ???? ?? ??? ? ???? ???? ??? ???? ???? SQL? ???? ?? ????? ??? ??? ?? ? ? ????. 3. ?? ?? ?? ?? : ??? ? ?? ??? ?? ???? ???? ??? ???? ?? ? ??? ??? ????/?? ??, ?? ??, ???? ? ?? ???? ? ?? ?? ??? ???? ??? ???? ???? ?????. 4.

MySQL?? ?? ? ??? ????? ?????? ??

MySQL ?? ? ??? ????? ??????? ?? setforeign_key_checks = 0? ???????. ?? ??? ?????? ??? ?? ?? ?? ??? ?? ??? ?? ? ? SETFOREIGN_KEY_CHECKS = 1; ??? ???? ???? ?? ?? ???. ? ??? ?? ???? ??? ????. ?? ??? ?? ??? ??? ??? ?? ???? ??? ??? ?? ?? ??? ????? ???????.

MySQL?? Like Operator? ???? ??? ??????

THELIKEOPERATORINMYSQLISUSSEDTOREARCHFORSPOCIFIEDPATTORNSINACOLUMNWITHWILDCARDS%(ZERMORMORECHARACTERS); 1. ??%TOMATCHANYENCE : 'JOHN%'FINDSNAMESSTIRTINGWITHJOHN, '%SON'FINDSTHOSENERDINE WITHSON ?'%ALI%ALI%? ?????

MySQL ??????? ?? ?? ?? ? Collation? ???? ??? ??????

ToChangeDefaultCharactersetandCollationForanexistingDatabase, usealterdatabaseedatabase_namecharacterset = utf8mb4collate = utf8mb4_unicode_ci

MySQL?? ?? ??? ???? ??

?? QusqlShowsTheExecutionPlanForaQuery, helpingifyperformanceIsss.1.itreturnSkeyDetailsIdid, select_type, table, type, cable_keys, key_len, ref, rows, ??? ? extra.2

MySQL?? ?? ??? ?? ??? ??????

locktableStreventsDatainconsistenciesinnon-transactionalEngineslikemyisambyserializingAccess; 2.itallowscontroloverConcurrencyUsingReadlocks (??, forreadingonly) ? Writelocks (??);

MySQL?? ???? ??? ???? ??? ??????

TheGroupByClauseInmySqlisUsedTogRouProwSwithidenticalValuesInspecifiedColumns, enablingSummaryCalculationsWithAgateFunctionSlikeCount (), sum (), avg () ? Min (); forexailor, "selectregion,"astotal_salesfromsfromsfromsefromsalesgroupby "

MySQL?? ???? ???? ???? ??

MySQL?? ???? ??? ???? ????? UTF8MB4 ?? ??? ???????. 1. ??????, ??? ? ?? UTF8MB4 ? UTF8MB4_UNICODE_CI? ????? ??????. 2. MySQL ?? ???? ????? ? ?? ??? UTF8MB4? ???? innodb_large_prefix? ??????. 3. ??? ?? ? ? charset? UTF8MB4? ??????. 4. ShowVaribles ? ShowCreatetable? ?? ??? ??????. 5. UTF8MB4 ??? ?? ?????? ???? ??? ? ??? 191 ? ??? ??????. ?? ??? ???? UTF8M ? ??????

InnoDB? ?? ? ? ??? ????? MyISAM??? ???? ????. 2. InnoDB? ??? ??? ????? ?? ?? ?? ?? ??? ???? ??, MyISAM? ??? ?? ?? ??? ???? ?? ??? ?????. 3. InnoDB? ??? ???? ???? ?? ??? ?? ?? ??? ????? MyISAM??? ???? ????. 4. InnoDB? ?? ?? ??? ??? ??? MyISAM? ??? ??? ???? ????. 5. Myisam? ??? ?? ?????? ? ?? ? ??? Innodb? ?? ???? ? ? ?????. 6. MySQL5.6 ??, InnoDB? ?? ??? ???? ????? ? ?? ???? ?????. 7. InnoDB? ?? ?? ?? ??? ???? ????? MyISAM? ??? ? ?????. ????, InnoDB? ???? ?? ?? ????? ????

mysqldump? ???? ??????? ?? ?? ??

mysqldumpisusedtoexport, Notimport, Adatabase; toimport, usethemysqlcommand-lineclient.1.ensureyouhavea.sqldumpfilecreatedviam ysqldump.2.2

MySQL?? ?? ??? ???? ??????

Full-TextearchInmysqlenAbleSefficiver, ??? ?? XTSearchingInCharacter ?? ColumnSusingFullTextIndexSandMatch () ... () ??, ???? ?????, ??, ? QueryExpansionModesprimallyonnodbandmyisAmengines, MakingIdealForlar

MySQL?? ?? ??? ??? ???? ??

?? ??? ??? ????? ?? ?? ??? ??? ??????.? ???? ???? altertable? ??? ? ?? ? ? ????. 2. match () ...? ?? () ??? ???? ??? ???? ??? ??, ?? ?? ? ?? ??? ?????. 3. ?? ?? ??, ?? ??, InnoDB? MyISAM? ??? ?? ?? ? ?? ?????? ??????. 4. ??? ???? ??? ???? ??? ??? ??? ???? ????? ???? ?? MySQL ?? ??? ??? ???? ?? ???? ????? ??? ???? ? ????.

MySQL ??? ????? ??? ??????

??? ???? ???? Where, Join, Orderby ? Groupby? ??? ?? ?? ??? ???? ?? ??? ?? ??? ????? ??? ???? ??? ??? ?? ??? ??? ??????. 2. ???? ??? ??, ??? ???, ?? ??? ??? ???? ??, ????? ??? ????, ?? ?? ??? ???? ????, ?? ????? ?? ??? ??????. 3. ?? ? ??? ?? ???, ?? ?? ????? ??? ????, ??? ?? ??? ????, ??? ??? ?? ???? ???????, ? ?? ??? ??? ???? ???? ??????. 4. ?? ? ?? format = json? ???? ?? ?? ??? ????,