ABAP Select data from SAP table TXW_VWPANLA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TXW_VWPANLA
*  INTO TABLE @DATA(IT_TXW_VWPANLA2).
*--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_TXW_VWPANLA INDEX 1 INTO DATA(WA_TXW_VWPANLA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TXW_VWPANLA>-MANDT = 1.
<TXW_VWPANLA>-RANL = 1.
<TXW_VWPANLA>-SANLF = 1.
<TXW_VWPANLA>-SSTATI = 1.
<TXW_VWPANLA>-GSART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TXW_VWPANLA-SWERTTYP, sy-vline,
  WA_TXW_VWPANLA-SBOERNOT, sy-vline,
  WA_TXW_VWPANLA-WLOMB, sy-vline,
  WA_TXW_VWPANLA-WPFAN, sy-vline,
  WA_TXW_VWPANLA-SSTBE, sy-vline,
  WA_TXW_VWPANLA-XALKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TXW_VWPANLA 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_TXW_VWPANLA 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_TXW_VWPANLA INTO WA_TXW_VWPANLA.


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

*Conversion exit ALPHA, internal->external for field REPKE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TXW_VWPANLA-REPKE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TXW_VWPANLA-REPKE.
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_TXW_VWPANLA_STR, 
MANDT TYPE STRING,
RANL TYPE STRING,
SANLF TYPE STRING,
SSTATI TYPE STRING,
GSART TYPE STRING,
SWERTTYP TYPE STRING,
SBOERNOT TYPE STRING,
WLOMB TYPE STRING,
WPFAN TYPE STRING,
SSTBE TYPE STRING,
XALKZ TYPE STRING,
XALLB TYPE STRING,
REPKE TYPE STRING,
SNOTI TYPE STRING,
DERF TYPE STRING,
DBEAR TYPE STRING,
INSTITUTE TYPE STRING,
RATING TYPE STRING,
RERF TYPE STRING,
RBEAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TXW_VWPANLA_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_TXW_VWPANLA_STR-MANDT sy-vline 
WA_TXW_VWPANLA_STR-RANL sy-vline 
WA_TXW_VWPANLA_STR-SANLF sy-vline 
WA_TXW_VWPANLA_STR-SSTATI sy-vline 
WA_TXW_VWPANLA_STR-GSART sy-vline 
WA_TXW_VWPANLA_STR-SWERTTYP sy-vline 
WA_TXW_VWPANLA_STR-SBOERNOT sy-vline 
WA_TXW_VWPANLA_STR-WLOMB sy-vline 
WA_TXW_VWPANLA_STR-WPFAN sy-vline 
WA_TXW_VWPANLA_STR-SSTBE sy-vline 
WA_TXW_VWPANLA_STR-XALKZ sy-vline 
WA_TXW_VWPANLA_STR-XALLB sy-vline 
WA_TXW_VWPANLA_STR-REPKE sy-vline 
WA_TXW_VWPANLA_STR-SNOTI sy-vline 
WA_TXW_VWPANLA_STR-DERF sy-vline 
WA_TXW_VWPANLA_STR-DBEAR sy-vline 
WA_TXW_VWPANLA_STR-INSTITUTE sy-vline 
WA_TXW_VWPANLA_STR-RATING sy-vline 
WA_TXW_VWPANLA_STR-RERF sy-vline 
WA_TXW_VWPANLA_STR-RBEAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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