ABAP Select data from SAP table PIQAGR_BUFF_FINAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAGR_BUFF_FINAL
*  INTO TABLE @DATA(IT_PIQAGR_BUFF_FINAL2).
*--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_PIQAGR_BUFF_FINAL INDEX 1 INTO DATA(WA_PIQAGR_BUFF_FINAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAGR_BUFF_FINAL>-AGRID = 1.
<PIQAGR_BUFF_FINAL>-AGRSTAT = 1.
<PIQAGR_BUFF_FINAL>-AYEAR = 1.
<PIQAGR_BUFF_FINAL>-APERIOD = 1.
<PIQAGR_BUFF_FINAL>-AGRBEGDA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAGR_BUFF_FINAL-AGRENDDA, sy-vline,
  WA_PIQAGR_BUFF_FINAL-AGRDATEE, sy-vline,
  WA_PIQAGR_BUFF_FINAL-AGRDATEL, sy-vline,
  WA_PIQAGR_BUFF_FINAL-GRADESYM, sy-vline,
  WA_PIQAGR_BUFF_FINAL-GRADE, sy-vline,
  WA_PIQAGR_BUFF_FINAL-GRADESCALE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAGR_BUFF_FINAL 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_PIQAGR_BUFF_FINAL 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_PIQAGR_BUFF_FINAL INTO WA_PIQAGR_BUFF_FINAL.


*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 ISOLA, internal->external for field LANGUTXT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGR_BUFF_FINAL-LANGUTXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGR_BUFF_FINAL-LANGUTXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CPUNITFOL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGR_BUFF_FINAL-CPUNITFOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGR_BUFF_FINAL-CPUNITFOL.
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_PIQAGR_BUFF_FINAL_STR, 
AGRID TYPE STRING,
AGRSTAT TYPE STRING,
AYEAR TYPE STRING,
APERIOD TYPE STRING,
AGRBEGDA TYPE STRING,
AGRENDDA TYPE STRING,
AGRDATEE TYPE STRING,
AGRDATEL TYPE STRING,
GRADESYM TYPE STRING,
GRADE TYPE STRING,
GRADESCALE TYPE STRING,
AGRNOTRATED TYPE STRING,
AGRDATE TYPE STRING,
AGRCOMPLETED TYPE STRING,
NOTEID TYPE STRING,
REGNUM TYPE STRING,
GRADECHANGED TYPE STRING,
PUBLICATIONDATE TYPE STRING,
AGRIDTXT TYPE STRING,
LANGUTXT TYPE STRING,
AGRTEXTTXT TYPE STRING,
OTYPEAPE TYPE STRING,
REALOAPE TYPE STRING,
PLVARAPE TYPE STRING,
AGRPLVARASG TYPE STRING,
AGROTYPEASG TYPE STRING,
AGRREALOASG TYPE STRING,
INFTYASG TYPE STRING,
RSIGNASG TYPE STRING,
RELATASG TYPE STRING,
ISTATASG TYPE STRING,
PRIOXASG TYPE STRING,
BEGDAASG TYPE STRING,
ENDDAASG TYPE STRING,
VARYFASG TYPE STRING,
SEQNRASG TYPE STRING,
SCLASASG TYPE STRING,
SOBIDASG TYPE STRING,
MODREG_IDASG TYPE STRING,
OTYPEAPR TYPE STRING,
REALOAPR TYPE STRING,
PLVARAPR TYPE STRING,
CPATTEMPFOL TYPE STRING,
CPEARNEDFOL TYPE STRING,
CPGRADEDFOL TYPE STRING,
CPUNITFOL TYPE STRING,
GRADESCALET TYPE STRING,
ORGUNIT TYPE STRING,
STUDY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAGR_BUFF_FINAL_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_PIQAGR_BUFF_FINAL_STR-AGRID sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRSTAT sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AYEAR sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-APERIOD sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRBEGDA sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRENDDA sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRDATEE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRDATEL sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-GRADESYM sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-GRADE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-GRADESCALE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRNOTRATED sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRDATE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRCOMPLETED sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-NOTEID sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-REGNUM sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-GRADECHANGED sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-PUBLICATIONDATE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRIDTXT sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-LANGUTXT sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRTEXTTXT sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-OTYPEAPE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-REALOAPE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-PLVARAPE sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRPLVARASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGROTYPEASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-AGRREALOASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-INFTYASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-RSIGNASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-RELATASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-ISTATASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-PRIOXASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-BEGDAASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-ENDDAASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-VARYFASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-SEQNRASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-SCLASASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-SOBIDASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-MODREG_IDASG sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-OTYPEAPR sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-REALOAPR sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-PLVARAPR sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-CPATTEMPFOL sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-CPEARNEDFOL sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-CPGRADEDFOL sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-CPUNITFOL sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-GRADESCALET sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-ORGUNIT sy-vline 
WA_PIQAGR_BUFF_FINAL_STR-STUDY sy-vline      INTO ld_text SEPARATED BY SPACE.

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