Oracle查询数据库中的所有表

SELECT A.TABLE_NAME 表英文名,
      
A.TAB_COMMENTS 表中文名,
       A.COLUMN_ID
序号,
       A.COLUMN_NAME
英文名,
       A.COMMENTS
中文名,
       B.PRIMARY_KEY
主键,
      
substr(A.DATA_TYPE,1,instr(A.DATA_TYPE,‘(‘)-1)
数据类型,
       case when
substr(A.DATA_TYPE,1,instr(A.DATA_TYPE,‘(‘)-1) = ‘TIMESTAMP‘ then ‘‘ when
substr(A.DATA_TYPE,1,instr(A.DATA_TYPE,‘(‘)-1) = ‘DATATIME‘ then ‘‘ else 
substr(A.DATA_TYPE,instr(A.DATA_TYPE,‘(‘)+1,length(A.DATA_TYPE)-instr(A.DATA_TYPE,‘(‘)-1)
end 长度,
       ‘‘
单位,
       A.NULLABLE
是否可空,
       ‘‘
缺省,
       ‘‘
上限,
       ‘‘
下限
      
  FROM (SELECT
X.TABLE_NAME,
              
Z.COMMENTS
TAB_COMMENTS,
              
X.COLUMN_ID,
              
X.COLUMN_NAME,
              
X.DATA_TYPE
||
              
DECODE(X.DATA_TYPE,
                     
‘NUMBER‘,
                     
DECODE(SIGN(X.DATA_SCALE),
                            
0,
                            
‘(‘
||
                            
DECODE(LENGTH(TO_CHAR(X.DATA_PRECISION)),
                                   
1,
                                   
TO_CHAR(X.DATA_PRECISION),
                                   
TO_CHAR(X.DATA_PRECISION, ‘FM00‘)) ||
‘)‘,
                            
1,
                            
‘(‘
||
                            
DECODE(LENGTH(TO_CHAR(X.DATA_PRECISION)),
                                   
1,
                                   
TO_CHAR(X.DATA_PRECISION),
                                   
TO_CHAR(X.DATA_PRECISION, ‘FM00‘)) || ‘,‘
||
                            
TO_CHAR(X.DATA_SCALE, ‘FM0‘) ||
‘)‘,
                            
‘‘),
                     
‘(‘ ||
DECODE(LENGTH(TO_CHAR(X.DATA_LENGTH)),
                                   
1,
                                   
TO_CHAR(X.DATA_LENGTH),
                                   
TO_CHAR(X.DATA_LENGTH, ‘FM9900‘)) || ‘)‘) AS
DATA_TYPE,
              
X.NULLABLE,
              
Y.COMMENTS
          FROM
USER_TAB_COLUMNS X, USER_COL_COMMENTS Y, USER_TAB_COMMENTS
Z
         WHERE X.TABLE_NAME =
Y.TABLE_NAME
           AND
X.COLUMN_NAME =
Y.COLUMN_NAME
          
AND X.TABLE_NAME = Z.TABLE_NAME) A,
      
(SELECT X.TABLE_NAME
TABLE_NAME,
              
X.COLUMN_NAME
COLUMN_NAME,
              
MAX(DECODE(Y.CONSTRAINT_TYPE,
                         
‘P‘,
                         
‘PK‘ || TO_CHAR(X.POSITION,
‘FM9‘),
                         
‘‘))
PRIMARY_KEY,
              
MAX(DECODE(Y.CONSTRAINT_TYPE,
                         
‘R‘,
                         
‘FK‘ || TO_CHAR(X.POSITION,
‘FM9‘),
                         
‘‘)) FOREIGN_KEY
          FROM
USER_CONS_COLUMNS X, USER_CONSTRAINTS
Y
         WHERE X.TABLE_NAME =
Y.TABLE_NAME
           AND
X.CONSTRAINT_NAME =
Y.CONSTRAINT_NAME
          
AND Y.CONSTRAINT_TYPE <>
‘C‘
         GROUP BY X.TABLE_NAME,
X.COLUMN_NAME) B
 WHERE A.TABLE_NAME = B.TABLE_NAME(+)
  
AND A.COLUMN_NAME = B.COLUMN_NAME(+)
   /*AND A.table_name =
upper(‘tp_planmonth‘)*/
 ORDER BY A.TABLE_NAME, A.COLUMN_ID