ABAP Select data from SAP table OMSPAGPA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OMSPAGPA
*  INTO TABLE @DATA(IT_OMSPAGPA2).
*--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_OMSPAGPA INDEX 1 INTO DATA(WA_OMSPAGPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OMSPAGPA>-ISACTIVE = 1.
<OMSPAGPA>-PLVAR = 1.
<OMSPAGPA>-DISPOBJMAN = 1.
<OMSPAGPA>-SELDATE = 1.
<OMSPAGPA>-SCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OMSPAGPA-EVENT, sy-vline,
  WA_OMSPAGPA-OTYPE, sy-vline,
  WA_OMSPAGPA-OBJID, sy-vline,
  WA_OMSPAGPA-RELOTYPE, sy-vline,
  WA_OMSPAGPA-RELOBJID, sy-vline,
  WA_OMSPAGPA-TABTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OMSPAGPA 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_OMSPAGPA 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_OMSPAGPA INTO WA_OMSPAGPA.


*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_OMSPAGPA_STR, 
ISACTIVE TYPE STRING,
PLVAR TYPE STRING,
DISPOBJMAN TYPE STRING,
SELDATE TYPE STRING,
SCLASS TYPE STRING,
EVENT TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
RELOTYPE TYPE STRING,
RELOBJID TYPE STRING,
TABTYPE TYPE STRING,
SCLASS2 TYPE STRING,
EVENT2 TYPE STRING,
OTYPE2 TYPE STRING,
OBJID2 TYPE STRING,
RELOTYPE2 TYPE STRING,
RELOBJID2 TYPE STRING,
TABTYPE2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OMSPAGPA_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_OMSPAGPA_STR-ISACTIVE sy-vline 
WA_OMSPAGPA_STR-PLVAR sy-vline 
WA_OMSPAGPA_STR-DISPOBJMAN sy-vline 
WA_OMSPAGPA_STR-SELDATE sy-vline 
WA_OMSPAGPA_STR-SCLASS sy-vline 
WA_OMSPAGPA_STR-EVENT sy-vline 
WA_OMSPAGPA_STR-OTYPE sy-vline 
WA_OMSPAGPA_STR-OBJID sy-vline 
WA_OMSPAGPA_STR-RELOTYPE sy-vline 
WA_OMSPAGPA_STR-RELOBJID sy-vline 
WA_OMSPAGPA_STR-TABTYPE sy-vline 
WA_OMSPAGPA_STR-SCLASS2 sy-vline 
WA_OMSPAGPA_STR-EVENT2 sy-vline 
WA_OMSPAGPA_STR-OTYPE2 sy-vline 
WA_OMSPAGPA_STR-OBJID2 sy-vline 
WA_OMSPAGPA_STR-RELOTYPE2 sy-vline 
WA_OMSPAGPA_STR-RELOBJID2 sy-vline 
WA_OMSPAGPA_STR-TABTYPE2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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