ABAP Select data from SAP table S457 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP S457 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 S457. 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 S457 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_S457 TYPE STANDARD TABLE OF S457,
      WA_S457 TYPE S457,
      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: <S457> TYPE S457.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_S457.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM S457
  INTO TABLE IT_S457.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM S457
*  INTO TABLE @DATA(IT_S4572).
*--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_S457 INDEX 1 INTO DATA(WA_S4572).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_S457 ASSIGNING <S457>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<S457>-MANDT = 1.
<S457>-SSOUR = 1.
<S457>-VRSIO = 1.
<S457>-SPMON = 1.
<S457>-SPTAG = 1.

ENDLOOP.

LOOP AT IT_S457 INTO WA_S457.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_S457-SPWOC, sy-vline,
  WA_S457-SPBUP, sy-vline,
  WA_S457-BEZIRKTAT, sy-vline,
  WA_S457-DRERZTAT, sy-vline,
  WA_S457-PVATAT, sy-vline,
  WA_S457-VKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_S457 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_S457 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_S457 INTO WA_S457.


*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_S457-SPMON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-SPMON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPWOC
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S457-SPWOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-SPWOC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI, internal->external for field SPBUP
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_S457-SPBUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-SPBUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZIRKTAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_S457-BEZIRKTAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-BEZIRKTAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRERZTAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_S457-DRERZTAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-DRERZTAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PVATAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_S457-PVATAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-PVATAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ETMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_S457-ETMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_S457-ETMEINS.
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_S457_STR, 
MANDT TYPE STRING,
SSOUR TYPE STRING,
VRSIO TYPE STRING,
SPMON TYPE STRING,
SPTAG TYPE STRING,
SPWOC TYPE STRING,
SPBUP TYPE STRING,
BEZIRKTAT TYPE STRING,
DRERZTAT TYPE STRING,
PVATAT TYPE STRING,
VKORG TYPE STRING,
PERIV TYPE STRING,
VWDAT TYPE STRING,
ETMEINS TYPE STRING,
STWAE TYPE STRING,
LFMENGE TYPE STRING,
WRBMNGPLAN TYPE STRING,
RESMNGPLAN TYPE STRING,
LFMNGAU TYPE STRING,
REMMENGE TYPE STRING,
ANZREM TYPE STRING,
ANZREMPOS TYPE STRING,
REKMENGE TYPE STRING,
NLMENGE TYPE STRING,
BEZMENGE TYPE STRING,
ANZREK TYPE STRING,
ANZREKPOS TYPE STRING,
UMNETWR TYPE STRING,
UMBRTWR TYPE STRING,
GUNETWR TYPE STRING,
GUBRTWR TYPE STRING,
UMKZWI1 TYPE STRING,
UMKZWI2 TYPE STRING,
UMKZWI3 TYPE STRING,
UMKZWI4 TYPE STRING,
UMKZWI5 TYPE STRING,
UMKZWI6 TYPE STRING,
GUKZWI1 TYPE STRING,
GUKZWI2 TYPE STRING,
GUKZWI3 TYPE STRING,
GUKZWI4 TYPE STRING,
GUKZWI5 TYPE STRING,
GUKZWI6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_S457_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_S457_STR-MANDT sy-vline 
WA_S457_STR-SSOUR sy-vline 
WA_S457_STR-VRSIO sy-vline 
WA_S457_STR-SPMON sy-vline 
WA_S457_STR-SPTAG sy-vline 
WA_S457_STR-SPWOC sy-vline 
WA_S457_STR-SPBUP sy-vline 
WA_S457_STR-BEZIRKTAT sy-vline 
WA_S457_STR-DRERZTAT sy-vline 
WA_S457_STR-PVATAT sy-vline 
WA_S457_STR-VKORG sy-vline 
WA_S457_STR-PERIV sy-vline 
WA_S457_STR-VWDAT sy-vline 
WA_S457_STR-ETMEINS sy-vline 
WA_S457_STR-STWAE sy-vline 
WA_S457_STR-LFMENGE sy-vline 
WA_S457_STR-WRBMNGPLAN sy-vline 
WA_S457_STR-RESMNGPLAN sy-vline 
WA_S457_STR-LFMNGAU sy-vline 
WA_S457_STR-REMMENGE sy-vline 
WA_S457_STR-ANZREM sy-vline 
WA_S457_STR-ANZREMPOS sy-vline 
WA_S457_STR-REKMENGE sy-vline 
WA_S457_STR-NLMENGE sy-vline 
WA_S457_STR-BEZMENGE sy-vline 
WA_S457_STR-ANZREK sy-vline 
WA_S457_STR-ANZREKPOS sy-vline 
WA_S457_STR-UMNETWR sy-vline 
WA_S457_STR-UMBRTWR sy-vline 
WA_S457_STR-GUNETWR sy-vline 
WA_S457_STR-GUBRTWR sy-vline 
WA_S457_STR-UMKZWI1 sy-vline 
WA_S457_STR-UMKZWI2 sy-vline 
WA_S457_STR-UMKZWI3 sy-vline 
WA_S457_STR-UMKZWI4 sy-vline 
WA_S457_STR-UMKZWI5 sy-vline 
WA_S457_STR-UMKZWI6 sy-vline 
WA_S457_STR-GUKZWI1 sy-vline 
WA_S457_STR-GUKZWI2 sy-vline 
WA_S457_STR-GUKZWI3 sy-vline 
WA_S457_STR-GUKZWI4 sy-vline 
WA_S457_STR-GUKZWI5 sy-vline 
WA_S457_STR-GUKZWI6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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