ABAP Select data from SAP table FSH_MASS_REQ_SELECT_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FSH_MASS_REQ_SELECT_S
*  INTO TABLE @DATA(IT_FSH_MASS_REQ_SELECT_S2).
*--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_FSH_MASS_REQ_SELECT_S INDEX 1 INTO DATA(WA_FSH_MASS_REQ_SELECT_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FSH_MASS_REQ_SELECT_S>-VBELN = 1.
<FSH_MASS_REQ_SELECT_S>-AUART = 1.
<FSH_MASS_REQ_SELECT_S>-VBTYP = 1.
<FSH_MASS_REQ_SELECT_S>-VKORG = 1.
<FSH_MASS_REQ_SELECT_S>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FSH_MASS_REQ_SELECT_S-SPART, sy-vline,
  WA_FSH_MASS_REQ_SELECT_S-KUNNR, sy-vline,
  WA_FSH_MASS_REQ_SELECT_S-AUDAT, sy-vline,
  WA_FSH_MASS_REQ_SELECT_S-ERNAM, sy-vline,
  WA_FSH_MASS_REQ_SELECT_S-POSNR, sy-vline,
  WA_FSH_MASS_REQ_SELECT_S-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FSH_MASS_REQ_SELECT_S 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_FSH_MASS_REQ_SELECT_S 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_FSH_MASS_REQ_SELECT_S INTO WA_FSH_MASS_REQ_SELECT_S.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FSH_MASS_REQ_SELECT_S-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_MASS_REQ_SELECT_S-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_FSH_MASS_REQ_SELECT_S-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_MASS_REQ_SELECT_S-AUART.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FSH_MASS_REQ_SELECT_S-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_MASS_REQ_SELECT_S-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_FSH_MASS_REQ_SELECT_S-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FSH_MASS_REQ_SELECT_S-PARVW.
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_FSH_MASS_REQ_SELECT_S_STR, 
VBELN TYPE STRING,
AUART TYPE STRING,
VBTYP TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUNNR TYPE STRING,
AUDAT TYPE STRING,
ERNAM TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
UEPOS TYPE STRING,
ABGRU TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
ERDAT TYPE STRING,
PARVW TYPE STRING,
GBSTK TYPE STRING,
BSTKD TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FSH_MASS_REQ_SELECT_S_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_FSH_MASS_REQ_SELECT_S_STR-VBELN sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-AUART sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-VBTYP sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-VKORG sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-VTWEG sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-SPART sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-KUNNR sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-AUDAT sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-ERNAM sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-POSNR sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-MATNR sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-UEPOS sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-ABGRU sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-WERKS sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-LGORT sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-ERDAT sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-PARVW sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-GBSTK sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-BSTKD sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-VKBUR sy-vline 
WA_FSH_MASS_REQ_SELECT_S_STR-VKGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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