ABAP Select data from SAP table ISU_MR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU_MR 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 ISU_MR. 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 ISU_MR 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_ISU_MR TYPE STANDARD TABLE OF ISU_MR,
      WA_ISU_MR TYPE ISU_MR,
      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: <ISU_MR> TYPE ISU_MR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_MR
*  INTO TABLE @DATA(IT_ISU_MR2).
*--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_ISU_MR INDEX 1 INTO DATA(WA_ISU_MR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_MR>-AB = 1.
<ISU_MR>-BIS = 1.
<ISU_MR>-LOGIKZW = 1.
<ISU_MR>-ABLBELNR = 1.
<ISU_MR>-ABLBELNRVA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_MR-I_ZWSTNDAB, sy-vline,
  WA_ISU_MR-I_ZWSTAND, sy-vline,
  WA_ISU_MR-I_ZWSTVOR, sy-vline,
  WA_ISU_MR-ABLESGR, sy-vline,
  WA_ISU_MR-ABLESGRV, sy-vline,
  WA_ISU_MR-ADAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_MR 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_ISU_MR 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_ISU_MR INTO WA_ISU_MR.


*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 ALPHA, internal->external for field ABLBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_MR-ABLBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_MR-ABLBELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABLBELNRVA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_MR-ABLBELNRVA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_MR-ABLBELNRVA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HH_MM, internal->external for field ATIM
CALL FUNCTION 'CONVERSION_EXIT_HH_MM_OUTPUT'
  EXPORTING
    input =                      WA_ISU_MR-ATIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_MR-ATIM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HH_MM, internal->external for field ATIMMAX
CALL FUNCTION 'CONVERSION_EXIT_HH_MM_OUTPUT'
  EXPORTING
    input =                      WA_ISU_MR-ATIMMAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_MR-ATIMMAX.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MASSBILL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISU_MR-MASSBILL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_MR-MASSBILL.
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_ISU_MR_STR, 
AB TYPE STRING,
BIS TYPE STRING,
LOGIKZW TYPE STRING,
ABLBELNR TYPE STRING,
ABLBELNRVA TYPE STRING,
I_ZWSTNDAB TYPE STRING,
I_ZWSTAND TYPE STRING,
I_ZWSTVOR TYPE STRING,
ABLESGR TYPE STRING,
ABLESGRV TYPE STRING,
ADAT TYPE STRING,
ATIM TYPE STRING,
ABLESTYP TYPE STRING,
ISTABLART TYPE STRING,
ABLHINW TYPE STRING,
ADATTATS TYPE STRING,
ADATMAX TYPE STRING,
ATIMMAX TYPE STRING,
MASSREAD TYPE STRING,
MASSBILL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_MR_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_ISU_MR_STR-AB sy-vline 
WA_ISU_MR_STR-BIS sy-vline 
WA_ISU_MR_STR-LOGIKZW sy-vline 
WA_ISU_MR_STR-ABLBELNR sy-vline 
WA_ISU_MR_STR-ABLBELNRVA sy-vline 
WA_ISU_MR_STR-I_ZWSTNDAB sy-vline 
WA_ISU_MR_STR-I_ZWSTAND sy-vline 
WA_ISU_MR_STR-I_ZWSTVOR sy-vline 
WA_ISU_MR_STR-ABLESGR sy-vline 
WA_ISU_MR_STR-ABLESGRV sy-vline 
WA_ISU_MR_STR-ADAT sy-vline 
WA_ISU_MR_STR-ATIM sy-vline 
WA_ISU_MR_STR-ABLESTYP sy-vline 
WA_ISU_MR_STR-ISTABLART sy-vline 
WA_ISU_MR_STR-ABLHINW sy-vline 
WA_ISU_MR_STR-ADATTATS sy-vline 
WA_ISU_MR_STR-ADATMAX sy-vline 
WA_ISU_MR_STR-ATIMMAX sy-vline 
WA_ISU_MR_STR-MASSREAD sy-vline 
WA_ISU_MR_STR-MASSBILL sy-vline      INTO ld_text SEPARATED BY SPACE.

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