ABAP Select data from SAP table V_T042B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T042B 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 V_T042B. 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 V_T042B 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_V_T042B TYPE STANDARD TABLE OF V_T042B,
      WA_V_T042B TYPE V_T042B,
      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: <V_T042B> TYPE V_T042B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T042B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T042B
  INTO TABLE IT_V_T042B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T042B
*  INTO TABLE @DATA(IT_V_T042B2).
*--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_V_T042B INDEX 1 INTO DATA(WA_V_T042B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T042B ASSIGNING <V_T042B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T042B>-MANDT = 1.
<V_T042B>-ZBUKR = 1.
<V_T042B>-BUTXT = 1.
<V_T042B>-MINDS = 1.
<V_T042B>-MINDH = 1.

ENDLOOP.

LOOP AT IT_V_T042B INTO WA_V_T042B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T042B-AFORN, sy-vline,
  WA_V_T042B-PDFAF, sy-vline,
  WA_V_T042B-XKDFB, sy-vline,
  WA_V_T042B-EFORN, sy-vline,
  WA_V_T042B-XWFAB, sy-vline,
  WA_V_T042B-XWFAF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T042B 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_V_T042B 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_V_T042B INTO WA_V_T042B.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_V_T042B_STR, 
MANDT TYPE STRING,
ZBUKR TYPE STRING,
BUTXT TYPE STRING,
MINDS TYPE STRING,
MINDH TYPE STRING,
AFORN TYPE STRING,
PDFAF TYPE STRING,
XKDFB TYPE STRING,
EFORN TYPE STRING,
XWFAB TYPE STRING,
XWFAF TYPE STRING,
XWFAI TYPE STRING,
WAVON TYPE STRING,
WABIS TYPE STRING,
WEBIS TYPE STRING,
WSICH TYPE STRING,
XKIDS TYPE STRING,
TXTKO TYPE STRING,
TXTFU TYPE STRING,
TXTUN TYPE STRING,
TXTAB TYPE STRING,
TXTID TYPE STRING,
PDFEF TYPE STRING,
SF_HEADER TYPE STRING,
SF_FOOTER TYPE STRING,
SF_SENDER TYPE STRING,
SF_GREETG TYPE STRING,
URL_LOGO TYPE STRING,
URL_GRAPH TYPE STRING,
XKDFB_PP TYPE STRING,
SEPA_REC_CRDID TYPE STRING,
X_DD_PRENOTIF TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T042B_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_V_T042B_STR-MANDT sy-vline 
WA_V_T042B_STR-ZBUKR sy-vline 
WA_V_T042B_STR-BUTXT sy-vline 
WA_V_T042B_STR-MINDS sy-vline 
WA_V_T042B_STR-MINDH sy-vline 
WA_V_T042B_STR-AFORN sy-vline 
WA_V_T042B_STR-PDFAF sy-vline 
WA_V_T042B_STR-XKDFB sy-vline 
WA_V_T042B_STR-EFORN sy-vline 
WA_V_T042B_STR-XWFAB sy-vline 
WA_V_T042B_STR-XWFAF sy-vline 
WA_V_T042B_STR-XWFAI sy-vline 
WA_V_T042B_STR-WAVON sy-vline 
WA_V_T042B_STR-WABIS sy-vline 
WA_V_T042B_STR-WEBIS sy-vline 
WA_V_T042B_STR-WSICH sy-vline 
WA_V_T042B_STR-XKIDS sy-vline 
WA_V_T042B_STR-TXTKO sy-vline 
WA_V_T042B_STR-TXTFU sy-vline 
WA_V_T042B_STR-TXTUN sy-vline 
WA_V_T042B_STR-TXTAB sy-vline 
WA_V_T042B_STR-TXTID sy-vline 
WA_V_T042B_STR-PDFEF sy-vline 
WA_V_T042B_STR-SF_HEADER sy-vline 
WA_V_T042B_STR-SF_FOOTER sy-vline 
WA_V_T042B_STR-SF_SENDER sy-vline 
WA_V_T042B_STR-SF_GREETG sy-vline 
WA_V_T042B_STR-URL_LOGO sy-vline 
WA_V_T042B_STR-URL_GRAPH sy-vline 
WA_V_T042B_STR-XKDFB_PP sy-vline 
WA_V_T042B_STR-SEPA_REC_CRDID sy-vline 
WA_V_T042B_STR-X_DD_PRENOTIF sy-vline 
WA_V_T042B_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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