ABAP Select data from SAP table RN1_PG_PRINTSETTING 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 RN1_PG_PRINTSETTING 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 RN1_PG_PRINTSETTING. 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 RN1_PG_PRINTSETTING 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_RN1_PG_PRINTSETTING TYPE STANDARD TABLE OF RN1_PG_PRINTSETTING,
      WA_RN1_PG_PRINTSETTING TYPE RN1_PG_PRINTSETTING,
      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: <RN1_PG_PRINTSETTING> TYPE RN1_PG_PRINTSETTING.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_PG_PRINTSETTING.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_PG_PRINTSETTING
  INTO TABLE IT_RN1_PG_PRINTSETTING.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_PG_PRINTSETTING
*  INTO TABLE @DATA(IT_RN1_PG_PRINTSETTING2).
*--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_RN1_PG_PRINTSETTING INDEX 1 INTO DATA(WA_RN1_PG_PRINTSETTING2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_PG_PRINTSETTING ASSIGNING <RN1_PG_PRINTSETTING>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_PG_PRINTSETTING>-PGDBA = 1.
<RN1_PG_PRINTSETTING>-PGCOMMENT = 1.
<RN1_PG_PRINTSETTING>-APPOFFER = 1.
<RN1_PG_PRINTSETTING>-PLAUTH = 1.
<RN1_PG_PRINTSETTING>-APPLAN = 1.

ENDLOOP.

LOOP AT IT_RN1_PG_PRINTSETTING INTO WA_RN1_PG_PRINTSETTING.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_PG_PRINTSETTING-SHADOWAPPMNT, sy-vline,
  WA_RN1_PG_PRINTSETTING-ORIENTATION, sy-vline,
  WA_RN1_PG_PRINTSETTING-FITWIDTHTOPAGE, sy-vline,
  WA_RN1_PG_PRINTSETTING-FITHEIGHTTOPAGE, sy-vline,
  WA_RN1_PG_PRINTSETTING-SEPARATE, sy-vline,
  WA_RN1_PG_PRINTSETTING-PGPAGES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_PG_PRINTSETTING 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_RN1_PG_PRINTSETTING 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_RN1_PG_PRINTSETTING INTO WA_RN1_PG_PRINTSETTING.


*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_RN1_PG_PRINTSETTING_STR, 
PGDBA TYPE STRING,
PGCOMMENT TYPE STRING,
APPOFFER TYPE STRING,
PLAUTH TYPE STRING,
APPLAN TYPE STRING,
SHADOWAPPMNT TYPE STRING,
ORIENTATION TYPE STRING,
FITWIDTHTOPAGE TYPE STRING,
FITHEIGHTTOPAGE TYPE STRING,
SEPARATE TYPE STRING,
PGPAGES TYPE STRING,
BLACKWHITE TYPE STRING,
DATE_FROM TYPE STRING,
TIME_FROM TYPE STRING,
DATE_TO TYPE STRING,
TIME_TO TYPE STRING,
T_POBS TYPE STRING,
HEADER_LEFT TYPE STRING,
HEADER_CENTER TYPE STRING,
HEADER_RIGHT TYPE STRING,
FOOTER_LEFT TYPE STRING,
FOOTER_CENTER TYPE STRING,
FOOTER_RIGHT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_PG_PRINTSETTING_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_RN1_PG_PRINTSETTING_STR-PGDBA sy-vline 
WA_RN1_PG_PRINTSETTING_STR-PGCOMMENT sy-vline 
WA_RN1_PG_PRINTSETTING_STR-APPOFFER sy-vline 
WA_RN1_PG_PRINTSETTING_STR-PLAUTH sy-vline 
WA_RN1_PG_PRINTSETTING_STR-APPLAN sy-vline 
WA_RN1_PG_PRINTSETTING_STR-SHADOWAPPMNT sy-vline 
WA_RN1_PG_PRINTSETTING_STR-ORIENTATION sy-vline 
WA_RN1_PG_PRINTSETTING_STR-FITWIDTHTOPAGE sy-vline 
WA_RN1_PG_PRINTSETTING_STR-FITHEIGHTTOPAGE sy-vline 
WA_RN1_PG_PRINTSETTING_STR-SEPARATE sy-vline 
WA_RN1_PG_PRINTSETTING_STR-PGPAGES sy-vline 
WA_RN1_PG_PRINTSETTING_STR-BLACKWHITE sy-vline 
WA_RN1_PG_PRINTSETTING_STR-DATE_FROM sy-vline 
WA_RN1_PG_PRINTSETTING_STR-TIME_FROM sy-vline 
WA_RN1_PG_PRINTSETTING_STR-DATE_TO sy-vline 
WA_RN1_PG_PRINTSETTING_STR-TIME_TO sy-vline 
WA_RN1_PG_PRINTSETTING_STR-T_POBS sy-vline 
WA_RN1_PG_PRINTSETTING_STR-HEADER_LEFT sy-vline 
WA_RN1_PG_PRINTSETTING_STR-HEADER_CENTER sy-vline 
WA_RN1_PG_PRINTSETTING_STR-HEADER_RIGHT sy-vline 
WA_RN1_PG_PRINTSETTING_STR-FOOTER_LEFT sy-vline 
WA_RN1_PG_PRINTSETTING_STR-FOOTER_CENTER sy-vline 
WA_RN1_PG_PRINTSETTING_STR-FOOTER_RIGHT sy-vline      INTO ld_text SEPARATED BY SPACE.

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