要計算表格的總數，請使用 table_schema 的 count(*) 概念。首先，要檢查我們的資料庫「business」中有多少張表，我們需要使用「show」指令。
mysql> show tables;
以下是顯示資料庫「business」中所有資料表的輸出。
+--------------------------+ | Tables_in_business | +--------------------------+ | addcheckconstraintdemo | | addcolumntable | | addconstraintdemo | | addnotnulldemo | | alphademo | | autoincrement | | autoincrementtable | | backticksymbol | | bookindexes | | chardemo | | checkdemo | | clonestudent | | columnexistdemo | | columnvaluenulldemo | | commaseperatedemo | | currentdatetime | | dateadddemo | | deletedemo | | deleterecord | | demo | | demo1 | | demoascii | | demoauto | | demobcrypt | | demoemptyandnull | | demoint | | demoonreplace | | demoschema | | demowhere | | distcountdemo | | distinctdemo | | distinctdemo1 | | duplicatebookindexes | | duplicatefound | | employeerecords | | employeetable | | escapedeom | | existsrowdemo | | findandreplacedemo | | firsttable | | foreigntable | | foreigntabledemo | | functionindexdemo | | functiontriggersdemo | | groupconcatenatedemo | | groupdemo | | groupdemo1 | | groupt_concatdemo | | ifelsedemo | | imagedemo | | incasesensdemo | | indexingdemo | | int1demo | | intdemo | | keydemo | | latandlangdemo | | limitoffsetdemo | | milliseconddemo | | modifycolumnnamedemo | | modifydatatype | | moneydemo | | moviecollection | | multipleindexdemo | | multiplerecordwithvalues | | myisamtoinnodbdemo | | mytable | | mytable1 | | newstudent | | nextpreviousdemo | | nonasciidemo | | nthrecorddemo | | nulldemo | | nullwithselect | | numbercolumndemo | | ondemo | | originaltable | | pasthistory | | presenthistory | | primarytable | | primarytable1 | | primarytabledemo | | qutesdemo | | rowcountdemo | | rownumberdemo | | rowstranspose | | rowstransposedemo | | saveintotextfile | | saveoutputintext | | secondtable | | sequencedemo | | singlequotesdemo | | smallintdemo | | sortingvarchardemo | | sourcetable | | spacecolumn | | student | | studentrecordwithmyisam | | studenttable | | table1 | | table2 | | tabledemo | | tbldemotrail | | tblf | | tblfirst | | tblfunctiontrigger | | tblifdemo | | tblp | | tblselectdemo | | tblstudent | | tbluni | | tblupdatelimit | | textdemo | | texturl | | timestampdemo | | trailingandleadingdemo | | transcationdemo | | triggedemo | | trigger1 | | trigger2demo | | trimdemo | | trimdemo2 | | uniqueconstdemo | | uniquedemo | | unsigneddemo | | updtable | | usernameandpassworddemo | | varchardemo | | varchardemo1 | | varchardemo2 | | varcharurl | | whereconditon | | xmldemo | +--------------------------+ 132 rows in set (0.01 sec)
上面我們資料庫業務有132張表。
檢查表的數量。
mysql> SELECT count(*) AS TOTALNUMBEROFTABLES -> FROM INFORMATION_SCHEMA.TABLES -> WHERE TABLE_SCHEMA = 'business';
以下輸出給出了所有表格的計數。
+---------------------+ | TOTALNUMBEROFTABLES | +---------------------+ | 132 | +---------------------+ 1 row in set (0.01 sec)
以上是如何統計MySQL資料庫中表格的數量？的詳細內容。更多資訊請關注PHP中文網其他相關文章！
