SQLPlus – 使用假脱机创建视图结构文件

Question

Oracle 版本：12c SQL 开发人员：4.1.1.19

我使用以下问题中的代码作为开始： SQLPlus - spooling to multiple files from PL/SQL blocks

我想创建一个流程：

1. 将以下结果导出到单个文件（约 110 行） 假脱机：

   SPOOL c:\temp\view_test.csv
   
   select 'desc '||view_name||';'FROM SYS.ALL_VIEWS WHERE OWNER = 'AN_OWNER_NAME' and substr(VIEW_NAME,1,2)='SN';
   
   SPOOL OFF
   

2. 对于每个“DESC”行，使用“DESC”的结果创建一个 csv 文件

   desc SPECIFIC_VIEW_NAME;
   

3. 每个视图的每个 CSV 中的结果将如下所示（大约 110 个）

Name                   Null     Type
---------------------- -------- -------------- 
ID                     NOT NULL NUMBER(19)
SYS_ID                 NOT NULL VARCHAR2(1000)
ACTIVE                          VARCHAR2(1000)
APRM_ID                         VARCHAR2(1000)
APRM_KEY                        VARCHAR2(1000)
BUSINESS_ONLY                   VARCHAR2(1000)

这是我目前正在使用的代码。当我运行此代码时，系统会提示我输入 dynamic_filename 的值：

set pagesize 0
set trimspool on  
set headsep off 
set feedback off
set echo off 
set verify off
set timing off
set linesize 4000

DEFINE rows_per_file = 50


-- Create an sql file that will create the individual result files
SET DEFINE OFF

SPOOL c:\temp\generate_one.sql

PROMPT COLUMN which_dynamic NEW_VALUE dynamic_filename
PROMPT

PROMPT SELECT 'c:\temp\run_#'||TO_CHAR( &1, 'fm000' )||'_result.txt' which_dynamic FROM dual
PROMPT /

PROMPT SPOOL &dynamic_filename

PROMPT SELECT *
PROMPT   FROM ( SELECT a.*, rownum rnum
PROMPT            FROM ( select 'desc '||view_name||';'FROM SYS.ALL_VIEWS WHERE OWNER = 'AN_OWNER_NAME' and substr(VIEW_NAME,1,2)='SN' ) a
PROMPT           WHERE rownum <= ( &2 * 50 ) )
PROMPT  WHERE rnum >= ( ( &3 - 1 ) * 50 ) + 1
PROMPT /

PROMPT SPOOL OFF

SPOOL OFF

SET DEFINE &


-- Define variable to hold number of rows
-- returned by the query
COLUMN num_rows NEW_VALUE v_num_rows

-- Find out how many rows there are to be
SELECT COUNT(*) num_rows
  FROM ( SELECT LEVEL num_files FROM dual CONNECT BY LEVEL <= 120 );


-- Create a master file with the correct number of sql files
SPOOL c:\temp\run_all.sql

SELECT '@c:\temp\generate_one.sql '||TO_CHAR( num_files )
                                   ||' '||TO_CHAR( num_files )
                                   ||' '||TO_CHAR( num_files ) file_name
  FROM ( SELECT LEVEL num_files 
           FROM dual 
        CONNECT BY LEVEL <= CEIL( &v_num_rows / &rows_per_file ) )
/

SPOOL OFF

-- Now run them all
@c:\temp\run_all.sql

Answer 1

我在办公室四处询问，有人建议我使用：

select TABLE_NAME,COLUMN_NAME, DATA_TYPE from SYS.ALL_TAB_COLS

这让我得到了我需要的东西。