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Oracle中查看所有表和字段

Oracle中查看所有表和字段

作者: 03ca2835cf70 | 来源:发表于2019-10-15 15:11 被阅读0次

    获取表字段:

    select *
    from user_tab_columns
    where Table_Name='用户表'
    order by column_name

    获取表注释:

    select *
    from user_tab_comments
    where Table_Name='用户表'

    order by Table_Name

    获取字段注释:

    select *
    from user_col_comments
    where Table_Name='用户表'

    order by column_name

    /* 获取表:*/

    select table_name from user_tables; //当前用户的表

    select table_name from all_tables; //所有用户的表

    select table_name from dba_tables; //包括系统表

    select table_name from dba_tables where owner='zfxfzb'

    /*
    user_tables:

    table_name,tablespace_name,last_analyzed等

    dba_tables:

    ower,table_name,tablespace_name,last_analyzed等

    all_tables:

    ower,table_name,tablespace_name,last_analyzed等

    all_objects:

    ower,object_name,subobject_name,object_id,created,last_ddl_time,timestamp,status等
    */

    /* 获取表字段:*/

    select * from user_tab_columns where Table_Name='用户表';

    select * from all_tab_columns where Table_Name='用户表';

    select * from dba_tab_columns where Table_Name='用户表';

    /* user_tab_columns:

    table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id等

    all_tab_columns :

    ower,table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id等

    dba_tab_columns:

    ower,table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id等
    */

    /* 获取表注释:*/

    select * from user_tab_comments

    /*
    user_tab_comments:table_name,table_type,comments

    相应的还有dba_tab_comments,all_tab_comments,这两个比user_tab_comments多了ower列。
    */

    /* 获取字段注释:*/

    select * from user_col_comments

    /*

    user_col_comments:table_name,column_name,comments

    相应的还有dba_col_comments,all_col_comments,这两个比user_col_comments多了ower列。
    */

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