ABAP Select data from SAP table WTYBW_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WTYBW_HEADER
*  INTO TABLE @DATA(IT_WTYBW_HEADER2).
*--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_WTYBW_HEADER INDEX 1 INTO DATA(WA_WTYBW_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WTYBW_HEADER>-PNGUID = 1.
<WTYBW_HEADER>-CLMNO = 1.
<WTYBW_HEADER>-CLMTY = 1.
<WTYBW_HEADER>-REFDT = 1.
<WTYBW_HEADER>-REFNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WTYBW_HEADER-AUTNO, sy-vline,
  WA_WTYBW_HEADER-AUTNA, sy-vline,
  WA_WTYBW_HEADER-RECALLNO, sy-vline,
  WA_WTYBW_HEADER-CLERK, sy-vline,
  WA_WTYBW_HEADER-RELTY, sy-vline,
  WA_WTYBW_HEADER-RELOB_EXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WTYBW_HEADER 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_WTYBW_HEADER 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_WTYBW_HEADER INTO WA_WTYBW_HEADER.


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

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

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

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

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

*Conversion exit GERNR, internal->external for field SERNO
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_HEADER-SERNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_HEADER-SERNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERNO2
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_HEADER-SERNO2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_HEADER-SERNO2.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TPLNR, internal->external for field FUNC_ID
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_HEADER-FUNC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_HEADER-FUNC_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_HEADER-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_HEADER-MATNR.
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_WTYBW_HEADER_STR, 
PNGUID TYPE STRING,
CLMNO TYPE STRING,
CLMTY TYPE STRING,
REFDT TYPE STRING,
REFNO TYPE STRING,
AUTNO TYPE STRING,
AUTNA TYPE STRING,
RECALLNO TYPE STRING,
CLERK TYPE STRING,
RELTY TYPE STRING,
RELOB_EXT TYPE STRING,
RELOB TYPE STRING,
RELOT TYPE STRING,
RELDT TYPE STRING,
CUSTOMER TYPE STRING,
VENDOR TYPE STRING,
PARVW TYPE STRING,
ASTATE TYPE STRING,
WERKS TYPE STRING,
QMNUM TYPE STRING,
CLMGRP TYPE STRING,
RESULT_OUT_MWTY TYPE STRING,
RESULT_IN_MWTY TYPE STRING,
RELTY2 TYPE STRING,
RELOB_EXT2 TYPE STRING,
RELOB2 TYPE STRING,
SERNO TYPE STRING,
SERNO2 TYPE STRING,
CLOSE_DATE TYPE STRING,
MANUAL TYPE STRING,
CLOSED TYPE STRING,
EQUI_ID TYPE STRING,
FUNC_ID TYPE STRING,
VEHICLE_GUID TYPE STRING,
IBASE_ID TYPE STRING,
MATNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WTYBW_HEADER_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_WTYBW_HEADER_STR-PNGUID sy-vline 
WA_WTYBW_HEADER_STR-CLMNO sy-vline 
WA_WTYBW_HEADER_STR-CLMTY sy-vline 
WA_WTYBW_HEADER_STR-REFDT sy-vline 
WA_WTYBW_HEADER_STR-REFNO sy-vline 
WA_WTYBW_HEADER_STR-AUTNO sy-vline 
WA_WTYBW_HEADER_STR-AUTNA sy-vline 
WA_WTYBW_HEADER_STR-RECALLNO sy-vline 
WA_WTYBW_HEADER_STR-CLERK sy-vline 
WA_WTYBW_HEADER_STR-RELTY sy-vline 
WA_WTYBW_HEADER_STR-RELOB_EXT sy-vline 
WA_WTYBW_HEADER_STR-RELOB sy-vline 
WA_WTYBW_HEADER_STR-RELOT sy-vline 
WA_WTYBW_HEADER_STR-RELDT sy-vline 
WA_WTYBW_HEADER_STR-CUSTOMER sy-vline 
WA_WTYBW_HEADER_STR-VENDOR sy-vline 
WA_WTYBW_HEADER_STR-PARVW sy-vline 
WA_WTYBW_HEADER_STR-ASTATE sy-vline 
WA_WTYBW_HEADER_STR-WERKS sy-vline 
WA_WTYBW_HEADER_STR-QMNUM sy-vline 
WA_WTYBW_HEADER_STR-CLMGRP sy-vline 
WA_WTYBW_HEADER_STR-RESULT_OUT_MWTY sy-vline 
WA_WTYBW_HEADER_STR-RESULT_IN_MWTY sy-vline 
WA_WTYBW_HEADER_STR-RELTY2 sy-vline 
WA_WTYBW_HEADER_STR-RELOB_EXT2 sy-vline 
WA_WTYBW_HEADER_STR-RELOB2 sy-vline 
WA_WTYBW_HEADER_STR-SERNO sy-vline 
WA_WTYBW_HEADER_STR-SERNO2 sy-vline 
WA_WTYBW_HEADER_STR-CLOSE_DATE sy-vline 
WA_WTYBW_HEADER_STR-MANUAL sy-vline 
WA_WTYBW_HEADER_STR-CLOSED sy-vline 
WA_WTYBW_HEADER_STR-EQUI_ID sy-vline 
WA_WTYBW_HEADER_STR-FUNC_ID sy-vline 
WA_WTYBW_HEADER_STR-VEHICLE_GUID sy-vline 
WA_WTYBW_HEADER_STR-IBASE_ID sy-vline 
WA_WTYBW_HEADER_STR-MATNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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