ABAP Select data from SAP table OIUREP_MRT_HIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OIUREP_MRT_HIST table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to OIUREP_MRT_HIST. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the OIUREP_MRT_HIST table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_OIUREP_MRT_HIST TYPE STANDARD TABLE OF OIUREP_MRT_HIST,
      WA_OIUREP_MRT_HIST TYPE OIUREP_MRT_HIST,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <OIUREP_MRT_HIST> TYPE OIUREP_MRT_HIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OIUREP_MRT_HIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OIUREP_MRT_HIST
  INTO TABLE IT_OIUREP_MRT_HIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIUREP_MRT_HIST
*  INTO TABLE @DATA(IT_OIUREP_MRT_HIST2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_OIUREP_MRT_HIST INDEX 1 INTO DATA(WA_OIUREP_MRT_HIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OIUREP_MRT_HIST ASSIGNING <OIUREP_MRT_HIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIUREP_MRT_HIST>-MANDT = 1.
<OIUREP_MRT_HIST>-DOC_ID = 1.
<OIUREP_MRT_HIST>-DET_LINE_NO = 1.
<OIUREP_MRT_HIST>-BUKRS = 1.
<OIUREP_MRT_HIST>-PAYOR_NO = 1.

ENDLOOP.

LOOP AT IT_OIUREP_MRT_HIST INTO WA_OIUREP_MRT_HIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIUREP_MRT_HIST-SALES_YEAR, sy-vline,
  WA_OIUREP_MRT_HIST-SALES_MONTH, sy-vline,
  WA_OIUREP_MRT_HIST-FED_INDIAN_CD, sy-vline,
  WA_OIUREP_MRT_HIST-RESERV_SPACE, sy-vline,
  WA_OIUREP_MRT_HIST-LEASE_NO, sy-vline,
  WA_OIUREP_MRT_HIST-AGREEMENT_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIUREP_MRT_HIST you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_OIUREP_MRT_HIST TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_OIUREP_MRT_HIST INTO WA_OIUREP_MRT_HIST.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit CHRNM, internal->external for field API_WELL_NO
CALL FUNCTION 'CONVERSION_EXIT_CHRNM_OUTPUT'
  EXPORTING
    input =                      WA_OIUREP_MRT_HIST-API_WELL_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIUREP_MRT_HIST-API_WELL_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MMS_SA_QY_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OIUREP_MRT_HIST-MMS_SA_QY_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIUREP_MRT_HIST-MMS_SA_QY_U.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GAS_MMBTU_QY_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OIUREP_MRT_HIST-GAS_MMBTU_QY_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIUREP_MRT_HIST-GAS_MMBTU_QY_U.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_OIUREP_MRT_HIST_STR, 
MANDT TYPE STRING,
DOC_ID TYPE STRING,
DET_LINE_NO TYPE STRING,
BUKRS TYPE STRING,
PAYOR_NO TYPE STRING,
SALES_YEAR TYPE STRING,
SALES_MONTH TYPE STRING,
FED_INDIAN_CD TYPE STRING,
RESERV_SPACE TYPE STRING,
LEASE_NO TYPE STRING,
AGREEMENT_NO TYPE STRING,
API_WELL_NO TYPE STRING,
API_WELL_CM_NO TYPE STRING,
MMS_PROD_CD TYPE STRING,
SALES_TYPE_CD TYPE STRING,
TRANS_CD TYPE STRING,
ADJ_CD TYPE STRING,
MMS_SA_QY TYPE STRING,
MMS_SA_QY_U TYPE STRING,
GAS_MMBTU_QY TYPE STRING,
GAS_MMBTU_QY_U TYPE STRING,
MMS_SA_AMT TYPE STRING,
MMS_SA_CUR TYPE STRING,
ROY_PR_ALW_AMT TYPE STRING,
ROY_PR_ALW_CUR TYPE STRING,
TRNSP_ALW_DE_AMT TYPE STRING,
TRNSP_ALW_DE_CUR TYPE STRING,
PROC_ALW_DE_AMT TYPE STRING,
PROC_ALW_DE_CUR TYPE STRING,
ROY_LS_ALLOW_AMT TYPE STRING,
ROY_LS_ALLOW_CUR TYPE STRING,
PAY_METHOD_CD TYPE STRING,
INDIAN_TRIBE_NO TYPE STRING,
REVERSAL_FL TYPE STRING,
REVERSAL_YEAR TYPE STRING,
REVERSAL_MONTH TYPE STRING,
SALES_DATE TYPE STRING,
OIU_CRUSER TYPE STRING,
OIU_TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIUREP_MRT_HIST_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_OIUREP_MRT_HIST_STR-MANDT sy-vline 
WA_OIUREP_MRT_HIST_STR-DOC_ID sy-vline 
WA_OIUREP_MRT_HIST_STR-DET_LINE_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-BUKRS sy-vline 
WA_OIUREP_MRT_HIST_STR-PAYOR_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-SALES_YEAR sy-vline 
WA_OIUREP_MRT_HIST_STR-SALES_MONTH sy-vline 
WA_OIUREP_MRT_HIST_STR-FED_INDIAN_CD sy-vline 
WA_OIUREP_MRT_HIST_STR-RESERV_SPACE sy-vline 
WA_OIUREP_MRT_HIST_STR-LEASE_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-AGREEMENT_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-API_WELL_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-API_WELL_CM_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-MMS_PROD_CD sy-vline 
WA_OIUREP_MRT_HIST_STR-SALES_TYPE_CD sy-vline 
WA_OIUREP_MRT_HIST_STR-TRANS_CD sy-vline 
WA_OIUREP_MRT_HIST_STR-ADJ_CD sy-vline 
WA_OIUREP_MRT_HIST_STR-MMS_SA_QY sy-vline 
WA_OIUREP_MRT_HIST_STR-MMS_SA_QY_U sy-vline 
WA_OIUREP_MRT_HIST_STR-GAS_MMBTU_QY sy-vline 
WA_OIUREP_MRT_HIST_STR-GAS_MMBTU_QY_U sy-vline 
WA_OIUREP_MRT_HIST_STR-MMS_SA_AMT sy-vline 
WA_OIUREP_MRT_HIST_STR-MMS_SA_CUR sy-vline 
WA_OIUREP_MRT_HIST_STR-ROY_PR_ALW_AMT sy-vline 
WA_OIUREP_MRT_HIST_STR-ROY_PR_ALW_CUR sy-vline 
WA_OIUREP_MRT_HIST_STR-TRNSP_ALW_DE_AMT sy-vline 
WA_OIUREP_MRT_HIST_STR-TRNSP_ALW_DE_CUR sy-vline 
WA_OIUREP_MRT_HIST_STR-PROC_ALW_DE_AMT sy-vline 
WA_OIUREP_MRT_HIST_STR-PROC_ALW_DE_CUR sy-vline 
WA_OIUREP_MRT_HIST_STR-ROY_LS_ALLOW_AMT sy-vline 
WA_OIUREP_MRT_HIST_STR-ROY_LS_ALLOW_CUR sy-vline 
WA_OIUREP_MRT_HIST_STR-PAY_METHOD_CD sy-vline 
WA_OIUREP_MRT_HIST_STR-INDIAN_TRIBE_NO sy-vline 
WA_OIUREP_MRT_HIST_STR-REVERSAL_FL sy-vline 
WA_OIUREP_MRT_HIST_STR-REVERSAL_YEAR sy-vline 
WA_OIUREP_MRT_HIST_STR-REVERSAL_MONTH sy-vline 
WA_OIUREP_MRT_HIST_STR-SALES_DATE sy-vline 
WA_OIUREP_MRT_HIST_STR-OIU_CRUSER sy-vline 
WA_OIUREP_MRT_HIST_STR-OIU_TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.