example sql table code

by data_length desc, index_length desc;where table_schema='mysql

by data_length desc, index_length desc;where table_schema='mysql

今日题目是一个中等难度的join有三个table分别是students,里面有每个

今日题目是一个中等难度的join有三个table分别是students,里面有每个

例:查看mysql库各表容量大小selecttable_schemaas'数据库', table

例:查看mysql库各表容量大小selecttable_schemaas'数据库', table

selecttable_schema as '数据库',sum(table_rows) as '记录数',sum

selecttable_schema as '数据库',sum(table_rows) as '记录数',sum

字段修改表本身:表本身可以修改:表名和表选项修改表名:rename table

字段修改表本身:表本身可以修改:表名和表选项修改表名:rename table

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