ABAP Select data from SAP table PSG_FORM_SEL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSG_FORM_SEL
*  INTO TABLE @DATA(IT_PSG_FORM_SEL2).
*--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_PSG_FORM_SEL INDEX 1 INTO DATA(WA_PSG_FORM_SEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSG_FORM_SEL>-MOLGA = 1.
<PSG_FORM_SEL>-P_APPL = 1.
<PSG_FORM_SEL>-FOGROUP = 1.
<PSG_FORM_SEL>-FOLNAME = 1.
<PSG_FORM_SEL>-FOVARIANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSG_FORM_SEL-FOTYPE, sy-vline,
  WA_PSG_FORM_SEL-ENDDA, sy-vline,
  WA_PSG_FORM_SEL-BEGDA, sy-vline,
  WA_PSG_FORM_SEL-FOTDEF, sy-vline,
  WA_PSG_FORM_SEL-FORMNAME, sy-vline,
  WA_PSG_FORM_SEL-MOLGA2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSG_FORM_SEL 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_PSG_FORM_SEL 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_PSG_FORM_SEL INTO WA_PSG_FORM_SEL.


*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_PSG_FORM_SEL_STR, 
MOLGA TYPE STRING,
P_APPL TYPE STRING,
FOGROUP TYPE STRING,
FOLNAME TYPE STRING,
FOVARIANT TYPE STRING,
FOTYPE TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
FOTDEF TYPE STRING,
FORMNAME TYPE STRING,
MOLGA2 TYPE STRING,
P_APPL2 TYPE STRING,
FOGROUP2 TYPE STRING,
FOLNAME2 TYPE STRING,
FOVARIANT2 TYPE STRING,
FOTYPE2 TYPE STRING,
ENDDA2 TYPE STRING,
BEGDA2 TYPE STRING,
FOTDEF2 TYPE STRING,
FORMNAME2 TYPE STRING,
MOLGA3 TYPE STRING,
P_APPL3 TYPE STRING,
FOGROUP3 TYPE STRING,
FOLNAME3 TYPE STRING,
FOVARIANT3 TYPE STRING,
FOTYPE3 TYPE STRING,
ENDDA3 TYPE STRING,
BEGDA3 TYPE STRING,
FOTDEF3 TYPE STRING,
FORMNAME3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSG_FORM_SEL_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_PSG_FORM_SEL_STR-MOLGA sy-vline 
WA_PSG_FORM_SEL_STR-P_APPL sy-vline 
WA_PSG_FORM_SEL_STR-FOGROUP sy-vline 
WA_PSG_FORM_SEL_STR-FOLNAME sy-vline 
WA_PSG_FORM_SEL_STR-FOVARIANT sy-vline 
WA_PSG_FORM_SEL_STR-FOTYPE sy-vline 
WA_PSG_FORM_SEL_STR-ENDDA sy-vline 
WA_PSG_FORM_SEL_STR-BEGDA sy-vline 
WA_PSG_FORM_SEL_STR-FOTDEF sy-vline 
WA_PSG_FORM_SEL_STR-FORMNAME sy-vline 
WA_PSG_FORM_SEL_STR-MOLGA2 sy-vline 
WA_PSG_FORM_SEL_STR-P_APPL2 sy-vline 
WA_PSG_FORM_SEL_STR-FOGROUP2 sy-vline 
WA_PSG_FORM_SEL_STR-FOLNAME2 sy-vline 
WA_PSG_FORM_SEL_STR-FOVARIANT2 sy-vline 
WA_PSG_FORM_SEL_STR-FOTYPE2 sy-vline 
WA_PSG_FORM_SEL_STR-ENDDA2 sy-vline 
WA_PSG_FORM_SEL_STR-BEGDA2 sy-vline 
WA_PSG_FORM_SEL_STR-FOTDEF2 sy-vline 
WA_PSG_FORM_SEL_STR-FORMNAME2 sy-vline 
WA_PSG_FORM_SEL_STR-MOLGA3 sy-vline 
WA_PSG_FORM_SEL_STR-P_APPL3 sy-vline 
WA_PSG_FORM_SEL_STR-FOGROUP3 sy-vline 
WA_PSG_FORM_SEL_STR-FOLNAME3 sy-vline 
WA_PSG_FORM_SEL_STR-FOVARIANT3 sy-vline 
WA_PSG_FORM_SEL_STR-FOTYPE3 sy-vline 
WA_PSG_FORM_SEL_STR-ENDDA3 sy-vline 
WA_PSG_FORM_SEL_STR-BEGDA3 sy-vline 
WA_PSG_FORM_SEL_STR-FOTDEF3 sy-vline 
WA_PSG_FORM_SEL_STR-FORMNAME3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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