ABAP Select data from SAP table TPDA_QUICK_VARS_STRUK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPDA_QUICK_VARS_STRUK
*  INTO TABLE @DATA(IT_TPDA_QUICK_VARS_STRUK2).
*--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_TPDA_QUICK_VARS_STRUK INDEX 1 INTO DATA(WA_TPDA_QUICK_VARS_STRUK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPDA_QUICK_VARS_STRUK>-MARK = 1.
<TPDA_QUICK_VARS_STRUK>-VARNAME = 1.
<TPDA_QUICK_VARS_STRUK>-VARSTATUS = 1.
<TPDA_QUICK_VARS_STRUK>-VARVALADD = 1.
<TPDA_QUICK_VARS_STRUK>-VARVALUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPDA_QUICK_VARS_STRUK-VARVALHEX, sy-vline,
  WA_TPDA_QUICK_VARS_STRUK-VARTYPE, sy-vline,
  WA_TPDA_QUICK_VARS_STRUK-VARABSTYPENAME, sy-vline,
  WA_TPDA_QUICK_VARS_STRUK-VARREADONLY, sy-vline,
  WA_TPDA_QUICK_VARS_STRUK-VAR_VAL_TECH, sy-vline,
  WA_TPDA_QUICK_VARS_STRUK-ACTION1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPDA_QUICK_VARS_STRUK 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_TPDA_QUICK_VARS_STRUK 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_TPDA_QUICK_VARS_STRUK INTO WA_TPDA_QUICK_VARS_STRUK.


*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_TPDA_QUICK_VARS_STRUK_STR, 
MARK TYPE STRING,
VARNAME TYPE STRING,
VARSTATUS TYPE STRING,
VARVALADD TYPE STRING,
VARVALUE TYPE STRING,
VARVALHEX TYPE STRING,
VARTYPE TYPE STRING,
VARABSTYPENAME TYPE STRING,
VARREADONLY TYPE STRING,
VAR_VAL_TECH TYPE STRING,
ACTION1 TYPE STRING,
ACTION2 TYPE STRING,
SYMBQUICK TYPE STRING,
METATYPE TYPE STRING,
SYMBKIND TYPE STRING,
ISREADONLY TYPE STRING,
TYPID TYPE STRING,
ABSTYPENAME TYPE STRING,
HEAPPARENTSYMB TYPE STRING,
QUICKDATA TYPE STRING,
CHANGABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPDA_QUICK_VARS_STRUK_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_TPDA_QUICK_VARS_STRUK_STR-MARK sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARNAME sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARSTATUS sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARVALADD sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARVALUE sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARVALHEX sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARTYPE sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARABSTYPENAME sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VARREADONLY sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-VAR_VAL_TECH sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-ACTION1 sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-ACTION2 sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-SYMBQUICK sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-METATYPE sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-SYMBKIND sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-ISREADONLY sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-TYPID sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-ABSTYPENAME sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-HEAPPARENTSYMB sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-QUICKDATA sy-vline 
WA_TPDA_QUICK_VARS_STRUK_STR-CHANGABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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