ABAP Select data from SAP table S951 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP S951 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 S951. 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 S951 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_S951 TYPE STANDARD TABLE OF S951,
      WA_S951 TYPE S951,
      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: <S951> TYPE S951.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_S951.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM S951
  INTO TABLE IT_S951.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM S951
*  INTO TABLE @DATA(IT_S9512).
*--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_S951 INDEX 1 INTO DATA(WA_S9512).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_S951 ASSIGNING <S951>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<S951>-MANDT = 1.
<S951>-SSOUR = 1.
<S951>-VRSIO = 1.
<S951>-SPMON = 1.
<S951>-SPTAG = 1.

ENDLOOP.

LOOP AT IT_S951 INTO WA_S951.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_S951-SPWOC, sy-vline,
  WA_S951-SPBUP, sy-vline,
  WA_S951-TPLST, sy-vline,
  WA_S951-TDLNR, sy-vline,
  WA_S951-TKNUM, sy-vline,
  WA_S951-AZONE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_S951 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_S951 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_S951 INTO WA_S951.


*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_S951-SPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-SPMON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPWOC
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S951-SPWOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-SPWOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPBUP
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S951-SPBUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-SPBUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TDLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_S951-TDLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-TDLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TKNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_S951-TKNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-TKNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field STAGEW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S951-STAGEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-STAGEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field STAVOL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S951-STAVOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-STAVOL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S951-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-BASME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEDST
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S951-MEDST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S951-MEDST.
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_S951_STR, 
MANDT TYPE STRING,
SSOUR TYPE STRING,
VRSIO TYPE STRING,
SPMON TYPE STRING,
SPTAG TYPE STRING,
SPWOC TYPE STRING,
SPBUP TYPE STRING,
TPLST TYPE STRING,
TDLNR TYPE STRING,
TKNUM TYPE STRING,
AZONE TYPE STRING,
LZONE TYPE STRING,
PERIV TYPE STRING,
VWDAT TYPE STRING,
STAGEW TYPE STRING,
STAVOL TYPE STRING,
BASME TYPE STRING,
MEDST TYPE STRING,
BRGEWK TYPE STRING,
NTGEWK TYPE STRING,
VOLUMK TYPE STRING,
LFIMG TYPE STRING,
DISTZ TYPE STRING,
DPLBG TYPE STRING,
DPTBG TYPE STRING,
DPTEN TYPE STRING,
DALBG TYPE STRING,
DATEN TYPE STRING,
DATBG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_S951_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_S951_STR-MANDT sy-vline 
WA_S951_STR-SSOUR sy-vline 
WA_S951_STR-VRSIO sy-vline 
WA_S951_STR-SPMON sy-vline 
WA_S951_STR-SPTAG sy-vline 
WA_S951_STR-SPWOC sy-vline 
WA_S951_STR-SPBUP sy-vline 
WA_S951_STR-TPLST sy-vline 
WA_S951_STR-TDLNR sy-vline 
WA_S951_STR-TKNUM sy-vline 
WA_S951_STR-AZONE sy-vline 
WA_S951_STR-LZONE sy-vline 
WA_S951_STR-PERIV sy-vline 
WA_S951_STR-VWDAT sy-vline 
WA_S951_STR-STAGEW sy-vline 
WA_S951_STR-STAVOL sy-vline 
WA_S951_STR-BASME sy-vline 
WA_S951_STR-MEDST sy-vline 
WA_S951_STR-BRGEWK sy-vline 
WA_S951_STR-NTGEWK sy-vline 
WA_S951_STR-VOLUMK sy-vline 
WA_S951_STR-LFIMG sy-vline 
WA_S951_STR-DISTZ sy-vline 
WA_S951_STR-DPLBG sy-vline 
WA_S951_STR-DPTBG sy-vline 
WA_S951_STR-DPTEN sy-vline 
WA_S951_STR-DALBG sy-vline 
WA_S951_STR-DATEN sy-vline 
WA_S951_STR-DATBG sy-vline      INTO ld_text SEPARATED BY SPACE.

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