ABAP Select data from SAP table PHK_FORM_CUSTL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PHK_FORM_CUSTL
*  INTO TABLE @DATA(IT_PHK_FORM_CUSTL2).
*--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_PHK_FORM_CUSTL INDEX 1 INTO DATA(WA_PHK_FORM_CUSTL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PHK_FORM_CUSTL>-TEXT018 = 1.
<PHK_FORM_CUSTL>-TEXT019 = 1.
<PHK_FORM_CUSTL>-TEXT020 = 1.
<PHK_FORM_CUSTL>-TEXT051 = 1.
<PHK_FORM_CUSTL>-TEXT022 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PHK_FORM_CUSTL-TEXT024, sy-vline,
  WA_PHK_FORM_CUSTL-TEXT025, sy-vline,
  WA_PHK_FORM_CUSTL-TEXT026, sy-vline,
  WA_PHK_FORM_CUSTL-TEXT052, sy-vline,
  WA_PHK_FORM_CUSTL-TEXT033, sy-vline,
  WA_PHK_FORM_CUSTL-TEXT034, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PHK_FORM_CUSTL 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_PHK_FORM_CUSTL 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_PHK_FORM_CUSTL INTO WA_PHK_FORM_CUSTL.


*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 GJAHR, internal->external for field G_END_OF_TAXYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PHK_FORM_CUSTL-G_END_OF_TAXYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PHK_FORM_CUSTL-G_END_OF_TAXYR.
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_PHK_FORM_CUSTL_STR, 
TEXT018 TYPE STRING,
TEXT019 TYPE STRING,
TEXT020 TYPE STRING,
TEXT051 TYPE STRING,
TEXT022 TYPE STRING,
TEXT024 TYPE STRING,
TEXT025 TYPE STRING,
TEXT026 TYPE STRING,
TEXT052 TYPE STRING,
TEXT033 TYPE STRING,
TEXT034 TYPE STRING,
PAGE_TAG TYPE STRING,
FORM_LIST TYPE STRING,
ERTAX TYPE STRING,
IRGRT TYPE STRING,
G_END_OF_TAXYR TYPE STRING,
SHTNO TYPE STRING,
AMOUNT TYPE STRING,
S_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PHK_FORM_CUSTL_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_PHK_FORM_CUSTL_STR-TEXT018 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT019 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT020 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT051 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT022 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT024 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT025 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT026 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT052 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT033 sy-vline 
WA_PHK_FORM_CUSTL_STR-TEXT034 sy-vline 
WA_PHK_FORM_CUSTL_STR-PAGE_TAG sy-vline 
WA_PHK_FORM_CUSTL_STR-FORM_LIST sy-vline 
WA_PHK_FORM_CUSTL_STR-ERTAX sy-vline 
WA_PHK_FORM_CUSTL_STR-IRGRT sy-vline 
WA_PHK_FORM_CUSTL_STR-G_END_OF_TAXYR sy-vline 
WA_PHK_FORM_CUSTL_STR-SHTNO sy-vline 
WA_PHK_FORM_CUSTL_STR-AMOUNT sy-vline 
WA_PHK_FORM_CUSTL_STR-S_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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