ABAP Select data from SAP table WEABLG_TYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WEABLG_TYPE
*  INTO TABLE @DATA(IT_WEABLG_TYPE2).
*--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_WEABLG_TYPE INDEX 1 INTO DATA(WA_WEABLG_TYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WEABLG_TYPE>-EABLG = 1.
<WEABLG_TYPE>-MANDT = 1.
<WEABLG_TYPE>-ABLBELNR = 1.
<WEABLG_TYPE>-ANLAGE = 1.
<WEABLG_TYPE>-ABLESGR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WEABLG_TYPE-ABRDATS, sy-vline,
  WA_WEABLG_TYPE-ABLEINH, sy-vline,
  WA_WEABLG_TYPE-ADATSOLL, sy-vline,
  WA_WEABLG_TYPE-UNTERDR, sy-vline,
  WA_WEABLG_TYPE-COLOGRP, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_WEABLG_TYPE 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_WEABLG_TYPE 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_WEABLG_TYPE INTO WA_WEABLG_TYPE.


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

*Conversion exit ALPHA, internal->external for field ANLAGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WEABLG_TYPE-ANLAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WEABLG_TYPE-ANLAGE.
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_WEABLG_TYPE_STR, 
EABLG TYPE STRING,
MANDT TYPE STRING,
ABLBELNR TYPE STRING,
ANLAGE TYPE STRING,
ABLESGR TYPE STRING,
ABRDATS TYPE STRING,
ABLEINH TYPE STRING,
ADATSOLL TYPE STRING,
UNTERDR TYPE STRING,
COLOGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WEABLG_TYPE_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_WEABLG_TYPE_STR-EABLG sy-vline 
WA_WEABLG_TYPE_STR-MANDT sy-vline 
WA_WEABLG_TYPE_STR-ABLBELNR sy-vline 
WA_WEABLG_TYPE_STR-ANLAGE sy-vline 
WA_WEABLG_TYPE_STR-ABLESGR sy-vline 
WA_WEABLG_TYPE_STR-ABRDATS sy-vline 
WA_WEABLG_TYPE_STR-ABLEINH sy-vline 
WA_WEABLG_TYPE_STR-ADATSOLL sy-vline 
WA_WEABLG_TYPE_STR-UNTERDR sy-vline 
WA_WEABLG_TYPE_STR-COLOGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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