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a. show tables»òshow tables from database_name; // ÏÔʾµ±Ç°Êý¾Ý¿âÖÐËùÓбíµÄÃû³Æ
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c. show columns from table_name from database_name; »òshow columns from database_name.table_name; // ÏÔʾ±íÖÐÁÐÃû³Æ
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jee="http://www.springframework.org/schema/jee"
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mysql> use information_schema;
Database changed
mysql> select count(1) as tables, concat(round(sum(table_rows)/1000000,2),'M') as rows, concat(round(sum(data_length)/(1024*1024*1024),2),'G') a ......