ABAP Select data from SAP table PIQAGM_OVW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAGM_OVW
*  INTO TABLE @DATA(IT_PIQAGM_OVW2).
*--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_PIQAGM_OVW INDEX 1 INTO DATA(WA_PIQAGM_OVW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAGM_OVW>-AGMID = 1.
<PIQAGM_OVW>-TRANSFER_AGREE_NO = 1.
<PIQAGM_OVW>-EXTERNAL_BEGIN_DATE = 1.
<PIQAGM_OVW>-EXTERNAL_END_DATE = 1.
<PIQAGM_OVW>-VALID_BEGIN_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAGM_OVW-VALID_END_DATE, sy-vline,
  WA_PIQAGM_OVW-FREE_CHARACTERS10, sy-vline,
  WA_PIQAGM_OVW-FREE_CHARACTERS20, sy-vline,
  WA_PIQAGM_OVW-PRIORITY, sy-vline,
  WA_PIQAGM_OVW-GRP_KEY, sy-vline,
  WA_PIQAGM_OVW-TRANSFER_AGREE_NOEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAGM_OVW 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_PIQAGM_OVW 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_PIQAGM_OVW INTO WA_PIQAGM_OVW.


*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 CUNIT, internal->external for field CREDIT_UNITINT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGM_OVW-CREDIT_UNITINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGM_OVW-CREDIT_UNITINT.
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_PIQAGM_OVW_STR, 
AGMID TYPE STRING,
TRANSFER_AGREE_NO TYPE STRING,
EXTERNAL_BEGIN_DATE TYPE STRING,
EXTERNAL_END_DATE TYPE STRING,
VALID_BEGIN_DATE TYPE STRING,
VALID_END_DATE TYPE STRING,
FREE_CHARACTERS10 TYPE STRING,
FREE_CHARACTERS20 TYPE STRING,
PRIORITY TYPE STRING,
GRP_KEY TYPE STRING,
TRANSFER_AGREE_NOEXT TYPE STRING,
EXTERNAL_OBJECT_TYPEEXT TYPE STRING,
EXTERNAL_OBJECTEXT TYPE STRING,
ACADEMIC_SCALE_IDEXT TYPE STRING,
REQUIRED_GRADEEXT TYPE STRING,
EXTERNAL_OBJECT_TYPEEXT_TEXT TYPE STRING,
EXTW_KEY TYPE STRING,
TRANSFER_AGREE_NOINT TYPE STRING,
INTERNAL_OBJECT_TYPEINT TYPE STRING,
INTERNAL_OBJECTINT TYPE STRING,
PROGRAM_TYPEINT TYPE STRING,
WITH_CREDITSINT TYPE STRING,
WITH_GRADEINT TYPE STRING,
CREDITINT TYPE STRING,
CREDIT_UNITINT TYPE STRING,
WITH_GRADE_DCRINT TYPE STRING,
INTERNAL_OBJECT_TYPEINT_TEXT TYPE STRING,
PROGRAM_TYPEINT_TEXT TYPE STRING,
INTW_KEY TYPE STRING,
EXTERNAL_OBJECT_STEXT TYPE STRING,
EXTERNAL_OBJECT_SHORT TYPE STRING,
EXTERNAL_OBJECT_DESC TYPE STRING,
INTERNAL_OBJECT_STEXT TYPE STRING,
INTERNAL_OBJECT_SHORT TYPE STRING,
INTERNAL_OBJECT_DESC TYPE STRING,
AGREEMENT_TEXT TYPE STRING,
EO_NAME TYPE STRING,
EO_OBJID TYPE STRING,
EO_ACCRE TYPE STRING,
EXTERNAL_POPIN TYPE STRING,
INTERNAL_POPIN TYPE STRING,
SELECTED_POPIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAGM_OVW_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_PIQAGM_OVW_STR-AGMID sy-vline 
WA_PIQAGM_OVW_STR-TRANSFER_AGREE_NO sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_BEGIN_DATE sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_END_DATE sy-vline 
WA_PIQAGM_OVW_STR-VALID_BEGIN_DATE sy-vline 
WA_PIQAGM_OVW_STR-VALID_END_DATE sy-vline 
WA_PIQAGM_OVW_STR-FREE_CHARACTERS10 sy-vline 
WA_PIQAGM_OVW_STR-FREE_CHARACTERS20 sy-vline 
WA_PIQAGM_OVW_STR-PRIORITY sy-vline 
WA_PIQAGM_OVW_STR-GRP_KEY sy-vline 
WA_PIQAGM_OVW_STR-TRANSFER_AGREE_NOEXT sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_OBJECT_TYPEEXT sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_OBJECTEXT sy-vline 
WA_PIQAGM_OVW_STR-ACADEMIC_SCALE_IDEXT sy-vline 
WA_PIQAGM_OVW_STR-REQUIRED_GRADEEXT sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_OBJECT_TYPEEXT_TEXT sy-vline 
WA_PIQAGM_OVW_STR-EXTW_KEY sy-vline 
WA_PIQAGM_OVW_STR-TRANSFER_AGREE_NOINT sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_OBJECT_TYPEINT sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_OBJECTINT sy-vline 
WA_PIQAGM_OVW_STR-PROGRAM_TYPEINT sy-vline 
WA_PIQAGM_OVW_STR-WITH_CREDITSINT sy-vline 
WA_PIQAGM_OVW_STR-WITH_GRADEINT sy-vline 
WA_PIQAGM_OVW_STR-CREDITINT sy-vline 
WA_PIQAGM_OVW_STR-CREDIT_UNITINT sy-vline 
WA_PIQAGM_OVW_STR-WITH_GRADE_DCRINT sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_OBJECT_TYPEINT_TEXT sy-vline 
WA_PIQAGM_OVW_STR-PROGRAM_TYPEINT_TEXT sy-vline 
WA_PIQAGM_OVW_STR-INTW_KEY sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_OBJECT_STEXT sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_OBJECT_SHORT sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_OBJECT_DESC sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_OBJECT_STEXT sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_OBJECT_SHORT sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_OBJECT_DESC sy-vline 
WA_PIQAGM_OVW_STR-AGREEMENT_TEXT sy-vline 
WA_PIQAGM_OVW_STR-EO_NAME sy-vline 
WA_PIQAGM_OVW_STR-EO_OBJID sy-vline 
WA_PIQAGM_OVW_STR-EO_ACCRE sy-vline 
WA_PIQAGM_OVW_STR-EXTERNAL_POPIN sy-vline 
WA_PIQAGM_OVW_STR-INTERNAL_POPIN sy-vline 
WA_PIQAGM_OVW_STR-SELECTED_POPIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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