ABAP Select data from SAP table SMSKAO1 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SMSKAO1 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 SMSKAO1. 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 SMSKAO1 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_SMSKAO1 TYPE STANDARD TABLE OF SMSKAO1,
      WA_SMSKAO1 TYPE SMSKAO1,
      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: <SMSKAO1> TYPE SMSKAO1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SMSKAO1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SMSKAO1
  INTO TABLE IT_SMSKAO1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMSKAO1
*  INTO TABLE @DATA(IT_SMSKAO12).
*--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_SMSKAO1 INDEX 1 INTO DATA(WA_SMSKAO12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SMSKAO1 ASSIGNING <SMSKAO1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMSKAO1>-MANDT = 1.
<SMSKAO1>-MATNR = 1.
<SMSKAO1>-WERKS = 1.
<SMSKAO1>-LGORT = 1.
<SMSKAO1>-CHARG = 1.

ENDLOOP.

LOOP AT IT_SMSKAO1 INTO WA_SMSKAO1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMSKAO1-SOBKZ, sy-vline,
  WA_SMSKAO1-VBELN, sy-vline,
  WA_SMSKAO1-POSNR, sy-vline,
  WA_SMSKAO1-RMSKA, sy-vline,
  WA_SMSKAO1-XDBUP, sy-vline,
  WA_SMSKAO1-MSEHI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SMSKAO1 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_SMSKAO1 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_SMSKAO1 INTO WA_SMSKAO1.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_SMSKAO1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSKAO1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SMSKAO1-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSKAO1-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SMSKAO1-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSKAO1-MSEHI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_SMSKAO1-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSKAO1-LFGJA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field KAGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_SMSKAO1-KAGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMSKAO1-KAGJA.
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_SMSKAO1_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
RMSKA TYPE STRING,
XDBUP TYPE STRING,
MSEHI TYPE STRING,
KALAB TYPE STRING,
KAINS TYPE STRING,
KASPE TYPE STRING,
KAVLA TYPE STRING,
KAVIN TYPE STRING,
KAVSP TYPE STRING,
KAVEI TYPE STRING,
KAEIN TYPE STRING,
KALAB_OLD TYPE STRING,
KAINS_OLD TYPE STRING,
KASPE_OLD TYPE STRING,
KAVLA_OLD TYPE STRING,
KAVIN_OLD TYPE STRING,
KAVSP_OLD TYPE STRING,
KAVEI_OLD TYPE STRING,
KAEIN_OLD TYPE STRING,
LFGJA TYPE STRING,
LFMON TYPE STRING,
RMSKAH TYPE STRING,
KALFM TYPE STRING,
KAGJA TYPE STRING,
KARUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMSKAO1_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_SMSKAO1_STR-MANDT sy-vline 
WA_SMSKAO1_STR-MATNR sy-vline 
WA_SMSKAO1_STR-WERKS sy-vline 
WA_SMSKAO1_STR-LGORT sy-vline 
WA_SMSKAO1_STR-CHARG sy-vline 
WA_SMSKAO1_STR-SOBKZ sy-vline 
WA_SMSKAO1_STR-VBELN sy-vline 
WA_SMSKAO1_STR-POSNR sy-vline 
WA_SMSKAO1_STR-RMSKA sy-vline 
WA_SMSKAO1_STR-XDBUP sy-vline 
WA_SMSKAO1_STR-MSEHI sy-vline 
WA_SMSKAO1_STR-KALAB sy-vline 
WA_SMSKAO1_STR-KAINS sy-vline 
WA_SMSKAO1_STR-KASPE sy-vline 
WA_SMSKAO1_STR-KAVLA sy-vline 
WA_SMSKAO1_STR-KAVIN sy-vline 
WA_SMSKAO1_STR-KAVSP sy-vline 
WA_SMSKAO1_STR-KAVEI sy-vline 
WA_SMSKAO1_STR-KAEIN sy-vline 
WA_SMSKAO1_STR-KALAB_OLD sy-vline 
WA_SMSKAO1_STR-KAINS_OLD sy-vline 
WA_SMSKAO1_STR-KASPE_OLD sy-vline 
WA_SMSKAO1_STR-KAVLA_OLD sy-vline 
WA_SMSKAO1_STR-KAVIN_OLD sy-vline 
WA_SMSKAO1_STR-KAVSP_OLD sy-vline 
WA_SMSKAO1_STR-KAVEI_OLD sy-vline 
WA_SMSKAO1_STR-KAEIN_OLD sy-vline 
WA_SMSKAO1_STR-LFGJA sy-vline 
WA_SMSKAO1_STR-LFMON sy-vline 
WA_SMSKAO1_STR-RMSKAH sy-vline 
WA_SMSKAO1_STR-KALFM sy-vline 
WA_SMSKAO1_STR-KAGJA sy-vline 
WA_SMSKAO1_STR-KARUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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