此代码是一个清除程序。我们希望清除从未订购过任何东西的客户（如果某人是“潜在”客户，他们会在公司保留记录。）
这将首先在测试环境中运行，但最终在生产环境中运行。我们将保留创建的临时文件作为备份。我不确定如何进行删除。我认为此时需要：如果找不到订单实体，则将记录写入TRCMASAC文件
C IF NOT %FOUND(OEORH4)
C WRITE TRCMASRR
* Delete? file name or format name
这是代码：
FXRCMASAC IF E DISK
* Order Header file - Keyed by Company and entity number
FOEORH4 IF E K DISK
FTRCMA1 UF A E K DISK
* Customer Keycode BI file
FZRCST1 IF E K DISK
* Output file - Customers who have no Keycode - VRCSTKBI PF
FVRCST1 UF A E K DISK
* Address Master file - xDRESSAD PF
FXDRES1 IF E K DISK
* Output file - Address - ZDRESSAD PF
FZDRES1 UF A E K DISK
*-----------------------------------------------------------------
* Calculation Specification
*-----------------------------------------------------------------
* Step 1
C READ xRCMASAC
C DOW NOT %EOF
*
* Check the record does not exist in order header file
C EXSR CHKORH_SR
C READ xRCMASAC
C ENDDO
* Step 2 and 3
C *LOVAL SETLL TRCMA1
C READ(N) TRCMA1
C DOW NOT %EOF
* limit number of records for test
c counta ifge 9000
C EVAL *INLR = *ON
c leave
c endif
c countz ifge 9000
C EVAL *INLR = *ON
c leave
c endif
* Check the record does not exist in stock header file
C EXSR CHKCUS_SR
*
C EXSR CHKADR_SR
*
* Read the next record
C READ(N) TRCMA1
C ENDDO
*-----------------------------------------------------------------
* End of the Program
*-----------------------------------------------------------------
C EVAL *INLR = *ON
*-----------------------------------------------------------------
* Check the order header entity
*-----------------------------------------------------------------
C CHKORH_SR BEGSR
*
C ORHKEY CHAIN OEORH4
* If the order entity is notfound, write the rec into TRCMASAC file
C IF NOT %FOUND(OEORH4)
C WRITE TRCMASRR
C ENDIF
*
C ENDSR
*-----------------------------------------------------------------
* Check the customer keycode entity
*-----------------------------------------------------------------
C CHKCUS_SR BEGSR
*
C ORHKEY CHAIN ZRCST1
* If the order entity is found, write the rec into VRCSTKBI file
C IF %FOUND(ZRCST1)
C WRITE VRCSTKRR
c add 1 countz 500
C ENDIF
*
C ENDSR
*-----------------------------------------------------------------
* Check the address entity for records of never ordered
C CHKADR_SR BEGSR
*
C ACENT# CHAIN ADRES1
* If the order entity is found, write the rec into ZDRESSRR file
C IF %FOUND(ADRES1)
C WRITE ZDRESSRR
c add 1 counta 500
C ENDIF
*
C ENDSR
*----------------------------------------------------------------
* Program Initialization Subroutine
*----------------------------------------------------------------
C *INZSR BEGSR
*
* ORDER HEADER KEYLIST
C ORHKEY KLIST
C KFLD ACCOM#
C KFLD ACENT#
c z-add 0 counta
c z-add 0 countz
*
* Clear TRCMASAC file data
C *LOVAL SETLL TRCMA1
C READ TRCMA1
C DOW NOT %EOF
C DELETE TRCMASRR
* Read the next record
C READ TRCMA1
C ENDDO
*
* Clear VRCSTKBI file data
C *LOVAL SETLL VRCST1
C READ VRCST1
C DOW NOT %EOF
C DELETE VRCSTKRR
* Read the next record
C READ VRCST1
C ENDDO
*
* Clear ZDRESSAD file data
C *LOVAL SETLL ZDRES1
C READ ZDRES1
C DOW NOT %EOF
C DELETE ZDRESSRR
* Read the next record
C READ ZDRES1
C ENDDO
*
C ENDSR