ABAP Select data from SAP table S955 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP S955 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 S955. 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 S955 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_S955 TYPE STANDARD TABLE OF S955,
      WA_S955 TYPE S955,
      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: <S955> TYPE S955.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_S955.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM S955
  INTO TABLE IT_S955.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM S955
*  INTO TABLE @DATA(IT_S9552).
*--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_S955 INDEX 1 INTO DATA(WA_S9552).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_S955 ASSIGNING <S955>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<S955>-MANDT = 1.
<S955>-SSOUR = 1.
<S955>-VRSIO = 1.
<S955>-SPMON = 1.
<S955>-SPTAG = 1.

ENDLOOP.

LOOP AT IT_S955 INTO WA_S955.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_S955-SPWOC, sy-vline,
  WA_S955-SPBUP, sy-vline,
  WA_S955-EKORG, sy-vline,
  WA_S955-VKORG, sy-vline,
  WA_S955-VTWEG, sy-vline,
  WA_S955-MATKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_S955 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_S955 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_S955 INTO WA_S955.


*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 PERI, internal->external for field SPMON
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S955-SPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-SPMON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPWOC
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S955-SPWOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-SPWOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPBUP
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S955-SPBUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-SPBUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_S955-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PLMHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S955-PLMHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-PLMHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S955-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S955-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-BASME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S955-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BSTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S955-BSTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S955-BSTME.
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_S955_STR, 
MANDT TYPE STRING,
SSOUR TYPE STRING,
VRSIO TYPE STRING,
SPMON TYPE STRING,
SPTAG TYPE STRING,
SPWOC TYPE STRING,
SPBUP TYPE STRING,
EKORG TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
MATKL TYPE STRING,
FILGRP TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
WGRU2 TYPE STRING,
WGRU1 TYPE STRING,
PERIV TYPE STRING,
VWDAT TYPE STRING,
PLMHT TYPE STRING,
WAERK TYPE STRING,
VRKME TYPE STRING,
HWAER TYPE STRING,
BSTWA TYPE STRING,
BASME TYPE STRING,
GEWEI TYPE STRING,
BSTME TYPE STRING,
LISTFLG TYPE STRING,
SBREIT TYPE STRING,
STIEF TYPE STRING,
ARTANZ TYPE STRING,
UMSGVP TYPE STRING,
UMSMNG TYPE STRING,
BSTGVP TYPE STRING,
ADDKMW TYPE STRING,
ADDKAL TYPE STRING,
AUMGVP TYPE STRING,
ULVMAO TYPE STRING,
AUMMNG TYPE STRING,
BVLGEO TYPE STRING,
BVLGVP TYPE STRING,
UMSGEO TYPE STRING,
UMSGVO TYPE STRING,
BKMMNG TYPE STRING,
BKMGEO TYPE STRING,
BKMGVO TYPE STRING,
BKMGVP TYPE STRING,
BKPMNG TYPE STRING,
BKPGEO TYPE STRING,
BKPGVO TYPE STRING,
BKPGVP TYPE STRING,
KMEMNG TYPE STRING,
KMEGEO TYPE STRING,
KMEGVO TYPE STRING,
KMEGVP TYPE STRING,
RTEMNG TYPE STRING,
RTEGEO TYPE STRING,
RTEGVO TYPE STRING,
RTEGVP TYPE STRING,
RTEGEW TYPE STRING,
BSTGEO TYPE STRING,
BSTMNG TYPE STRING,
BSTGVO TYPE STRING,
UBPEPM TYPE STRING,
UBMEPM TYPE STRING,
UBPGEO TYPE STRING,
UBMGEO TYPE STRING,
ZUGGEO TYPE STRING,
ABGGEO TYPE STRING,
ABGGVO TYPE STRING,
ABGGVP TYPE STRING,
ZUGMNG TYPE STRING,
ZUGGVO TYPE STRING,
ZUGGVP TYPE STRING,
UBPVPM TYPE STRING,
UBMVPM TYPE STRING,
UBPGVO TYPE STRING,
UBMGVO TYPE STRING,
UBPGVP TYPE STRING,
UBMGVP TYPE STRING,
BBSMNG TYPE STRING,
BBSGEO TYPE STRING,
BBZGEO TYPE STRING,
BBAGEO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_S955_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_S955_STR-MANDT sy-vline 
WA_S955_STR-SSOUR sy-vline 
WA_S955_STR-VRSIO sy-vline 
WA_S955_STR-SPMON sy-vline 
WA_S955_STR-SPTAG sy-vline 
WA_S955_STR-SPWOC sy-vline 
WA_S955_STR-SPBUP sy-vline 
WA_S955_STR-EKORG sy-vline 
WA_S955_STR-VKORG sy-vline 
WA_S955_STR-VTWEG sy-vline 
WA_S955_STR-MATKL sy-vline 
WA_S955_STR-FILGRP sy-vline 
WA_S955_STR-MATNR sy-vline 
WA_S955_STR-WERKS sy-vline 
WA_S955_STR-WGRU2 sy-vline 
WA_S955_STR-WGRU1 sy-vline 
WA_S955_STR-PERIV sy-vline 
WA_S955_STR-VWDAT sy-vline 
WA_S955_STR-PLMHT sy-vline 
WA_S955_STR-WAERK sy-vline 
WA_S955_STR-VRKME sy-vline 
WA_S955_STR-HWAER sy-vline 
WA_S955_STR-BSTWA sy-vline 
WA_S955_STR-BASME sy-vline 
WA_S955_STR-GEWEI sy-vline 
WA_S955_STR-BSTME sy-vline 
WA_S955_STR-LISTFLG sy-vline 
WA_S955_STR-SBREIT sy-vline 
WA_S955_STR-STIEF sy-vline 
WA_S955_STR-ARTANZ sy-vline 
WA_S955_STR-UMSGVP sy-vline 
WA_S955_STR-UMSMNG sy-vline 
WA_S955_STR-BSTGVP sy-vline 
WA_S955_STR-ADDKMW sy-vline 
WA_S955_STR-ADDKAL sy-vline 
WA_S955_STR-AUMGVP sy-vline 
WA_S955_STR-ULVMAO sy-vline 
WA_S955_STR-AUMMNG sy-vline 
WA_S955_STR-BVLGEO sy-vline 
WA_S955_STR-BVLGVP sy-vline 
WA_S955_STR-UMSGEO sy-vline 
WA_S955_STR-UMSGVO sy-vline 
WA_S955_STR-BKMMNG sy-vline 
WA_S955_STR-BKMGEO sy-vline 
WA_S955_STR-BKMGVO sy-vline 
WA_S955_STR-BKMGVP sy-vline 
WA_S955_STR-BKPMNG sy-vline 
WA_S955_STR-BKPGEO sy-vline 
WA_S955_STR-BKPGVO sy-vline 
WA_S955_STR-BKPGVP sy-vline 
WA_S955_STR-KMEMNG sy-vline 
WA_S955_STR-KMEGEO sy-vline 
WA_S955_STR-KMEGVO sy-vline 
WA_S955_STR-KMEGVP sy-vline 
WA_S955_STR-RTEMNG sy-vline 
WA_S955_STR-RTEGEO sy-vline 
WA_S955_STR-RTEGVO sy-vline 
WA_S955_STR-RTEGVP sy-vline 
WA_S955_STR-RTEGEW sy-vline 
WA_S955_STR-BSTGEO sy-vline 
WA_S955_STR-BSTMNG sy-vline 
WA_S955_STR-BSTGVO sy-vline 
WA_S955_STR-UBPEPM sy-vline 
WA_S955_STR-UBMEPM sy-vline 
WA_S955_STR-UBPGEO sy-vline 
WA_S955_STR-UBMGEO sy-vline 
WA_S955_STR-ZUGGEO sy-vline 
WA_S955_STR-ABGGEO sy-vline 
WA_S955_STR-ABGGVO sy-vline 
WA_S955_STR-ABGGVP sy-vline 
WA_S955_STR-ZUGMNG sy-vline 
WA_S955_STR-ZUGGVO sy-vline 
WA_S955_STR-ZUGGVP sy-vline 
WA_S955_STR-UBPVPM sy-vline 
WA_S955_STR-UBMVPM sy-vline 
WA_S955_STR-UBPGVO sy-vline 
WA_S955_STR-UBMGVO sy-vline 
WA_S955_STR-UBPGVP sy-vline 
WA_S955_STR-UBMGVP sy-vline 
WA_S955_STR-BBSMNG sy-vline 
WA_S955_STR-BBSGEO sy-vline 
WA_S955_STR-BBZGEO sy-vline 
WA_S955_STR-BBAGEO sy-vline      INTO ld_text SEPARATED BY SPACE.

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