Oracle 查询表信息获取表字段及字段注释

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。
*/


数据运维技术 » Oracle 查询表信息获取表字段及字段注释