查看字段:
select * from user_tab_columns where Table_Name='用戶表';
select * from all_tab_columns where Table_Name='用戶表';
select * from dba_tab_columns where Table_Name='用戶表';
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
獲取表註釋
select * from user_tab_comments
user_tab_comments:table_name,table_type,comments
相應的還有dba_tab_comments,all_tab_comments,這兩個比user_tab_comments多了ower列。
獲取字段註釋:
select * from user_col_comments
user_col_comments:table_name,column_name,comments
相應的還有dba_col_comments,all_col_comments,這兩個比user_col_comments多了ower列。