SAP NATIVE SQL

news2024/12/23 17:05:39

【应用场景】

1. 往对方中间库表中直接新增数据库表记录

2. 通过数据库中间件直接读取对方系统数据库表

【知识点】1. 连接数据库 2.读取数据 3.关闭数据库连接 4. 游标的使用

【前置条件】DB2配置对应对方系统的数据库连接是通的。有时因为密码过期或改了会导致数据库连接不上，需要检查。

【应用实例代码1】-带游标

DATA g_conexion   TYPE dbcon-con_name VALUE 'ECCBI_DEV'.
DATA lr_error     TYPE REF TO cx_sy_native_sql_error.
DATA lv_mess      TYPE string.
DATA ev_msg TYPE char255.
"--  1. 连接SQL SERVER
TRY.
    EXEC SQL.
      connect to :g_conexion
    endexec.
    exec sql.
      set connection :g_conexion
    ENDEXEC.
  CATCH cx_sy_native_sql_error INTO lr_error.
    CALL METHOD lr_error->if_message~get_text
      RECEIVING
        result = lv_mess.
    CONCATENATE lv_mess '，无法连接至SQL数据库   连接名:' g_conexion INTO ev_msg.
ENDTRY.

TRY.
    "付款单
    "--  读取游标
    EXEC SQL.
      open dbcur1 for
       select
         a.factualpayamount,
         a.fpayeraccountbankid,
         b.fbankaccountnumber,
         a.fpayeename,
         a.fpayeebank,
         a.fpayeeaccountbank,
         a.ffeetypeid,
         c.fname_l2 as zyname,
         a.fnumber,
         a.fbizdate,
         a.fcompanyid,
         d.FName_l2 as fcompanyname,
         a.fcreatetime
       from SLT_EAS.T_CAS_PAYMENTBILL a
        left join SLT_EAS.T_BD_AccountBanks b
        on a.fpayeraccountbankid=b.fid
        left join SLT_EAS.T_CAS_FeeType c
        on a.ffeetypeid=c.fid
        left join SLT_EAS.T_ORG_Company d
        on a.fcompanyid=d.fid
       where a.FBankPayState = '6'
         and a.fcreatetime >= :f_fcreatetime
         and a.fcreatetime <= :e_fcreatetime
         and c.fname_l2 = '退房款'
         and a.FisCommittoBe = '1'
    ENDEXEC.

    DO.
      EXEC SQL.
        fetch next dbcur1 INTO :gs_fkd.
      ENDEXEC.
      IF sy-subrc <> 0.
        EXIT.
      ELSE.
        APPEND gs_fkd TO gt_fkd.
      ENDIF.
    ENDDO.
    "--  关闭游标
    EXEC SQL.
      CLOSE dbcur1
    ENDEXEC.
  CATCH cx_sy_native_sql_error INTO lr_error.
    CALL METHOD lr_error->if_message~get_text
      RECEIVING
        result = lv_mess.

    "gv_errorstr = lr_error->get_text( ).
    CONCATENATE '读取数据出错,'  lv_mess ': EAS视图' INTO ev_msg.
ENDTRY.
"-- 断开连接
EXEC SQL.
  disconnect :g_conexion
ENDEXEC.

【应用实例代码2】



 DATA LS_ZSFI0343 TYPE ZSFI0343.
  DATA:LV_ERRO_TEXT    TYPE C LENGTH 200,
       LV_ERRO_TEXT1   TYPE C LENGTH 200,
       LC_ERRO_OBJECT  TYPE REF TO CX_SY_NATIVE_SQL_ERROR,
       LC_ERRO_OBJECT1 TYPE REF TO CX_SY_NATIVE_SQL_ERROR.

  CONSTANTS: C_DATABASE TYPE CHAR11 VALUE 'SAP2HFM_MID'.
  CONSTANTS C_DATABASE1 TYPE CHAR11 VALUE 'SAP2HFM_RES'.
  DATA:LV_DATABASE TYPE CHAR30.
* 按系统来源，确定更新那个数据库
  CASE I_TARGET_SYS.
    WHEN 'PVKHB01'.
      LV_DATABASE = C_DATABASE.
    WHEN 'PVKHB02'.
      LV_DATABASE = C_DATABASE1.
    WHEN OTHERS.
      LV_DATABASE = C_DATABASE.
  ENDCASE.
*---data define




*---get data
  PERFORM FRM_GET_DATA_0060 TABLES ET_ZSFI0343
                       USING I_BUKRS
                             I_GJAHR
                             i_monat
                             I_BATCH_ID
                             I_FREQUESTNO
                       CHANGING E_ERR
                                E_MSG.


*---get data
  IF ET_ZSFI0343[] IS INITIAL.
    E_ERR = 'S'.
    EXIT.
  ENDIF.
  E_ERR = 'S'.

* 获取函数文本
  PERFORM FRM_GET_FUNC_NAME USING 'ZFII_0060'
                         CHANGING E_MSG.


*---update database
*使用标准方法捕获异常、异常处理（如果有异常，输出记录异常日志回滚数据；如果无异常，执行后续程序）
  TRY .
      EXEC SQL.
        CONNECT TO :LV_DATABASE
      ENDEXEC.
    CATCH CX_SY_NATIVE_SQL_ERROR INTO LC_ERRO_OBJECT.
      LV_ERRO_TEXT = LC_ERRO_OBJECT->GET_TEXT( ).

  ENDTRY.

  IF LV_ERRO_TEXT IS NOT INITIAL.
    E_ERR = 'F'.
    E_MSG = E_MSG && ':' && LV_ERRO_TEXT.
    EXIT.
  ENDIF.

  LOOP AT ET_ZSFI0343 INTO LS_ZSFI0343.
    TRY.
        " SAP_STAGE.
        EXEC SQL.
          INSERT INTO CT_GL_MIDCFCHECK
            ( FID,
              FREQUESTNO,
              FSOURCESYSTEM,
              FCOMPANYNUMBER,
              FCOMPANYNAME,
              FYEAR,
              FMONTH,
              FPERIODNUMBER,
              FACCOUNTNUMBER,
              FACCOUNTNAME,
              FCURRENCY,
              FORIGINALAMOUNT,
              FLOCALAMOUNT,
              FCREATORID,
              FCREATETIME,
              FLASTUPDATEUSERID,
              FLASTUPDATETIME,
              F_BATCH_ID,
              SCENARIO,
              RBUSA,
              GTEXT
          )
          VALUES(:LS_ZSFI0343-FID,
                :LS_ZSFI0343-FREQUESTNO,
                :LS_ZSFI0343-FSOURCESYSTEM,
                :LS_ZSFI0343-FCOMPANYNUMBER,
                :LS_ZSFI0343-FCOMPANYNAME,
                :LS_ZSFI0343-FYEAR,
                :LS_ZSFI0343-FMONTH,
                :LS_ZSFI0343-FPERIODNUMBER,
                :LS_ZSFI0343-FACCOUNTNUMBER,
                :LS_ZSFI0343-FACCOUNTNAME,
                :LS_ZSFI0343-FCURRENCY,
                :LS_ZSFI0343-FORIGINALAMOUNT,
                :LS_ZSFI0343-FLOCALAMOUNT,
                :LS_ZSFI0343-FCREATORID,
                :LV_TIME,
                :LS_ZSFI0343-FLASTUPDATEUSERID,
                :LV_TIME,
                :LS_ZSFI0343-F_BATCH_ID,
                :LS_ZSFI0343-SCENARIO,
                :LS_ZSFI0343-RBUSA,
                :LS_ZSFI0343-GTEXT
         )

        ENDEXEC.
*****捕获异常
      CATCH CX_SY_NATIVE_SQL_ERROR INTO LC_ERRO_OBJECT.
        LV_ERRO_TEXT = LC_ERRO_OBJECT->GET_TEXT( ).
    ENDTRY.



    IF LV_ERRO_TEXT IS INITIAL.
*    如果无异常，提交插入数据
      PERFORM FRM_NATIVE_COMMIT.

    ELSE.
*    如果捕获到异常，记录日志，回滚
      PERFORM FRM_NATIVE_ROLLBACK.
      E_ERR = 'F'.
      E_MSG = E_MSG && ':' && LV_ERRO_TEXT .
      EXIT.
    ENDIF.

    CLEAR LV_ERRO_TEXT.
  ENDLOOP.

  "关闭连接
  TRY .
      EXEC SQL.
        DISCONNECT :LV_DATABASE
      ENDEXEC.
    CATCH CX_SY_NATIVE_SQL_ERROR INTO LC_ERRO_OBJECT1.
      LV_ERRO_TEXT1 = LC_ERRO_OBJECT1->GET_TEXT( ).
      E_MSG = E_MSG && ':' && LV_ERRO_TEXT1 .
      E_ERR = 'F'.
  ENDTRY.


  IF E_ERR = 'S'.
    E_ERR = 'S'.
    E_MSG = TEXT-002 && ':' && E_MSG.
  ELSE.
    E_ERR = 'F'.
    E_MSG = TEXT-003 && ':' && E_MSG.
  ENDIF.

*---uadate database


ENDFUNCTION.

FORM frm_connect_db USING p_dbname.

  DATA: l_obj_sqldb  TYPE REF TO cx_sy_native_sql_error.
  DATA: l_error_text TYPE string.

  TRY.
      EXEC SQL.
        CONNECT TO :p_dbname
      ENDEXEC.
*****连接Oracle数据库时，捕获异常，如果连接失败，输出异常信息
    CATCH CX_SY_NATIVE_SQL_ERROR INTO L_OBJ_SQLDB.
      CALL METHOD L_OBJ_SQLDB->GET_TEXT
        RECEIVING
          RESULT = L_ERROR_TEXT.

      GV_MSG = L_ERROR_TEXT.
  ENDTRY.

ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  FRM_NATIVE_COMMIT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM FRM_NATIVE_COMMIT .
  EXEC SQL.
    commit
  ENDEXEC.
ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  FRM_NATIVE_ROLLBACK
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM frm_native_rollback .
  EXEC SQL.
    rollback
  ENDEXEC.
ENDFORM.
*&---------------------------------------------------------------------*
*&      Form  FRM_DISCONNECT_DB
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM frm_disconnect_db USING p_dbname .

*断开数据库连接
  EXEC SQL.
    DISCONNECT :p_dbname
  ENDEXEC.

ENDFORM.