ABAP Select data from SAP table WSTI_SELTAB_GM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSTI_SELTAB_GM
*  INTO TABLE @DATA(IT_WSTI_SELTAB_GM2).
*--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_WSTI_SELTAB_GM INDEX 1 INTO DATA(WA_WSTI_SELTAB_GM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSTI_SELTAB_GM>-IBLNR = 1.
<WSTI_SELTAB_GM>-GJAHR = 1.
<WSTI_SELTAB_GM>-ZEILI = 1.
<WSTI_SELTAB_GM>-MATNR = 1.
<WSTI_SELTAB_GM>-CHARG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSTI_SELTAB_GM-SOBKZ, sy-vline,
  WA_WSTI_SELTAB_GM-BSTAR, sy-vline,
  WA_WSTI_SELTAB_GM-LIFNR, sy-vline,
  WA_WSTI_SELTAB_GM-KWART, sy-vline,
  WA_WSTI_SELTAB_GM-ZLDAT, sy-vline,
  WA_WSTI_SELTAB_GM-ISEG_MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSTI_SELTAB_GM 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_WSTI_SELTAB_GM 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_WSTI_SELTAB_GM INTO WA_WSTI_SELTAB_GM.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WSTI_SELTAB_GM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WSTI_SELTAB_GM-MEINS.
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_WSTI_SELTAB_GM_STR, 
IBLNR TYPE STRING,
GJAHR TYPE STRING,
ZEILI TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
BSTAR TYPE STRING,
LIFNR TYPE STRING,
KWART TYPE STRING,
ZLDAT TYPE STRING,
ISEG_MATNR TYPE STRING,
COUNT_DT TYPE STRING,
FREEZE_DT TYPE STRING,
ENTER_DT TYPE STRING,
COUNT_DT_LOW TYPE STRING,
MAX_XBUIB_DATE TYPE STRING,
DISST TYPE STRING,
ATTYP TYPE STRING,
MEINS TYPE STRING,
T_COMPONENT TYPE STRING,
T_SINGLE_MAT TYPE STRING,
T_SALES_SET TYPE STRING,
QUERY_INDEX TYPE STRING,
FROM TYPE STRING,
TO TYPE STRING,
SALES_SET_MULT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSTI_SELTAB_GM_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_WSTI_SELTAB_GM_STR-IBLNR sy-vline 
WA_WSTI_SELTAB_GM_STR-GJAHR sy-vline 
WA_WSTI_SELTAB_GM_STR-ZEILI sy-vline 
WA_WSTI_SELTAB_GM_STR-MATNR sy-vline 
WA_WSTI_SELTAB_GM_STR-CHARG sy-vline 
WA_WSTI_SELTAB_GM_STR-SOBKZ sy-vline 
WA_WSTI_SELTAB_GM_STR-BSTAR sy-vline 
WA_WSTI_SELTAB_GM_STR-LIFNR sy-vline 
WA_WSTI_SELTAB_GM_STR-KWART sy-vline 
WA_WSTI_SELTAB_GM_STR-ZLDAT sy-vline 
WA_WSTI_SELTAB_GM_STR-ISEG_MATNR sy-vline 
WA_WSTI_SELTAB_GM_STR-COUNT_DT sy-vline 
WA_WSTI_SELTAB_GM_STR-FREEZE_DT sy-vline 
WA_WSTI_SELTAB_GM_STR-ENTER_DT sy-vline 
WA_WSTI_SELTAB_GM_STR-COUNT_DT_LOW sy-vline 
WA_WSTI_SELTAB_GM_STR-MAX_XBUIB_DATE sy-vline 
WA_WSTI_SELTAB_GM_STR-DISST sy-vline 
WA_WSTI_SELTAB_GM_STR-ATTYP sy-vline 
WA_WSTI_SELTAB_GM_STR-MEINS sy-vline 
WA_WSTI_SELTAB_GM_STR-T_COMPONENT sy-vline 
WA_WSTI_SELTAB_GM_STR-T_SINGLE_MAT sy-vline 
WA_WSTI_SELTAB_GM_STR-T_SALES_SET sy-vline 
WA_WSTI_SELTAB_GM_STR-QUERY_INDEX sy-vline 
WA_WSTI_SELTAB_GM_STR-FROM sy-vline 
WA_WSTI_SELTAB_GM_STR-TO sy-vline 
WA_WSTI_SELTAB_GM_STR-SALES_SET_MULT sy-vline      INTO ld_text SEPARATED BY SPACE.

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