ABAP Select data from SAP table VV_TCA41_A_VQ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VV_TCA41_A_VQ 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 VV_TCA41_A_VQ. 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 VV_TCA41_A_VQ 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_VV_TCA41_A_VQ TYPE STANDARD TABLE OF VV_TCA41_A_VQ,
      WA_VV_TCA41_A_VQ TYPE VV_TCA41_A_VQ,
      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: <VV_TCA41_A_VQ> TYPE VV_TCA41_A_VQ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VV_TCA41_A_VQ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VV_TCA41_A_VQ
  INTO TABLE IT_VV_TCA41_A_VQ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VV_TCA41_A_VQ
*  INTO TABLE @DATA(IT_VV_TCA41_A_VQ2).
*--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_VV_TCA41_A_VQ INDEX 1 INTO DATA(WA_VV_TCA41_A_VQ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VV_TCA41_A_VQ ASSIGNING <VV_TCA41_A_VQ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VV_TCA41_A_VQ>-MANDT = 1.
<VV_TCA41_A_VQ>-PLNAW = 1.
<VV_TCA41_A_VQ>-PROFIDNETZ = 1.
<VV_TCA41_A_VQ>-WERKS_TXT = 1.
<VV_TCA41_A_VQ>-VERWE_TXT = 1.

ENDLOOP.

LOOP AT IT_VV_TCA41_A_VQ INTO WA_VV_TCA41_A_VQ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VV_TCA41_A_VQ-STATU_TXT, sy-vline,
  WA_VV_TCA41_A_VQ-ZERMA_TXT, sy-vline,
  WA_VV_TCA41_A_VQ-VGWTS_TXT, sy-vline,
  WA_VV_TCA41_A_VQ-FLG_ERF_H, sy-vline,
  WA_VV_TCA41_A_VQ-ESOKZ, sy-vline,
  WA_VV_TCA41_A_VQ-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VV_TCA41_A_VQ 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_VV_TCA41_A_VQ 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_VV_TCA41_A_VQ INTO WA_VV_TCA41_A_VQ.


*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 NUMCV, internal->external for field VORNR_DEL
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_VV_TCA41_A_VQ-VORNR_DEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VV_TCA41_A_VQ-VORNR_DEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PLNME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VV_TCA41_A_VQ-PLNME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VV_TCA41_A_VQ-PLNME.
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_VV_TCA41_A_VQ_STR, 
MANDT TYPE STRING,
PLNAW TYPE STRING,
PROFIDNETZ TYPE STRING,
WERKS_TXT TYPE STRING,
VERWE_TXT TYPE STRING,
STATU_TXT TYPE STRING,
ZERMA_TXT TYPE STRING,
VGWTS_TXT TYPE STRING,
FLG_ERF_H TYPE STRING,
ESOKZ TYPE STRING,
WAERS TYPE STRING,
VORNR_DEL TYPE STRING,
WERKS TYPE STRING,
PLNME TYPE STRING,
VERWE TYPE STRING,
STATU TYPE STRING,
UMREN TYPE STRING,
UMREZ TYPE STRING,
ZERMA TYPE STRING,
BMSCH TYPE STRING,
VGWTS TYPE STRING,
PROFI_TXT TYPE STRING,
TEXT40 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VV_TCA41_A_VQ_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_VV_TCA41_A_VQ_STR-MANDT sy-vline 
WA_VV_TCA41_A_VQ_STR-PLNAW sy-vline 
WA_VV_TCA41_A_VQ_STR-PROFIDNETZ sy-vline 
WA_VV_TCA41_A_VQ_STR-WERKS_TXT sy-vline 
WA_VV_TCA41_A_VQ_STR-VERWE_TXT sy-vline 
WA_VV_TCA41_A_VQ_STR-STATU_TXT sy-vline 
WA_VV_TCA41_A_VQ_STR-ZERMA_TXT sy-vline 
WA_VV_TCA41_A_VQ_STR-VGWTS_TXT sy-vline 
WA_VV_TCA41_A_VQ_STR-FLG_ERF_H sy-vline 
WA_VV_TCA41_A_VQ_STR-ESOKZ sy-vline 
WA_VV_TCA41_A_VQ_STR-WAERS sy-vline 
WA_VV_TCA41_A_VQ_STR-VORNR_DEL sy-vline 
WA_VV_TCA41_A_VQ_STR-WERKS sy-vline 
WA_VV_TCA41_A_VQ_STR-PLNME sy-vline 
WA_VV_TCA41_A_VQ_STR-VERWE sy-vline 
WA_VV_TCA41_A_VQ_STR-STATU sy-vline 
WA_VV_TCA41_A_VQ_STR-UMREN sy-vline 
WA_VV_TCA41_A_VQ_STR-UMREZ sy-vline 
WA_VV_TCA41_A_VQ_STR-ZERMA sy-vline 
WA_VV_TCA41_A_VQ_STR-BMSCH sy-vline 
WA_VV_TCA41_A_VQ_STR-VGWTS sy-vline 
WA_VV_TCA41_A_VQ_STR-PROFI_TXT sy-vline 
WA_VV_TCA41_A_VQ_STR-TEXT40 sy-vline      INTO ld_text SEPARATED BY SPACE.

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