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如何將oracle表中的字段類型、字段註釋說明、字段名壹起查詢出來

SELECT?b.column_name column_name -字段名

,b.data_type data_type -字段類型

,b.data_length -字段長度

,a.comments comments -字段註釋

FROM?user_col_comments a

,all_tab_columns b

WHERE?a.table_name = b.table_name and

a.table_name = 'table_name';

擴展資料:

關於獲取oracle表中所有需要的信息(字段、註釋、類型等等)

壹、獲取表字段:

select *?

from user_tab_columns?

where Table_Name='用戶表'?

order by column_name

二、獲取表註釋:

select *?

from user_tab_comments?

where Table_Name='用戶表'

order by Table_Name

三、獲取字段註釋:

select *?

from user_col_comments?

where Table_Name='用戶表'

order by column_name

/* 獲取表:*/

select table_name from user_tables; //當前用戶的表 ?

select table_name from all_tables; //所有用戶的表?

select table_name from dba_tables; //包括系統表

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:

wer,table_name,tablespace_name,last_analyzed等

all_objects:

ower,object_name,subobject_name,object_id,created,last_ddl_time,timestamp,status等?

*/

/*? 獲取表字段:*/

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 all_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。?

*/