ABAP Select data from SAP table T7GR4APD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7GR4APD 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 T7GR4APD. 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 T7GR4APD 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_T7GR4APD TYPE STANDARD TABLE OF T7GR4APD,
      WA_T7GR4APD TYPE T7GR4APD,
      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: <T7GR4APD> TYPE T7GR4APD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7GR4APD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7GR4APD
  INTO TABLE IT_T7GR4APD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7GR4APD
*  INTO TABLE @DATA(IT_T7GR4APD2).
*--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_T7GR4APD INDEX 1 INTO DATA(WA_T7GR4APD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7GR4APD ASSIGNING <T7GR4APD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7GR4APD>-MANDT = 1.
<T7GR4APD>-BUKRS = 1.
<T7GR4APD>-PYEAR = 1.
<T7GR4APD>-PMONT = 1.
<T7GR4APD>-PERNR = 1.

ENDLOOP.

LOOP AT IT_T7GR4APD INTO WA_T7GR4APD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7GR4APD-KAD, sy-vline,
  WA_T7GR4APD-SPIKA, sy-vline,
  WA_T7GR4APD-KPK, sy-vline,
  WA_T7GR4APD-ENDDA, sy-vline,
  WA_T7GR4APD-BEGDA, sy-vline,
  WA_T7GR4APD-PYTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7GR4APD 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_T7GR4APD 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_T7GR4APD INTO WA_T7GR4APD.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_T7GR4APD-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7GR4APD-GBDAT.
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_T7GR4APD_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
PYEAR TYPE STRING,
PMONT TYPE STRING,
PERNR TYPE STRING,
KAD TYPE STRING,
SPIKA TYPE STRING,
KPK TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
PYTYP TYPE STRING,
APDTP TYPE STRING,
SEQNB TYPE STRING,
DEPAR TYPE STRING,
SPINS TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
FATHE TYPE STRING,
MOTHE TYPE STRING,
GBDAT TYPE STRING,
AFM TYPE STRING,
TYINS TYPE STRING,
REG01 TYPE STRING,
AMKA TYPE STRING,
SALARY TYPE STRING,
FSCHD TYPE STRING,
ALLDA TYPE STRING,
INSUD TYPE STRING,
WSUND TYPE STRING,
GROSS TYPE STRING,
IKAEE TYPE STRING,
IKAER TYPE STRING,
IKASM TYPE STRING,
IKASE TYPE STRING,
IKAPR TYPE STRING,
IKASR TYPE STRING,
IKAPM TYPE STRING,
WAERS TYPE STRING,
BONDT TYPE STRING,
PAPER TYPE STRING,
PTAPD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7GR4APD_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_T7GR4APD_STR-MANDT sy-vline 
WA_T7GR4APD_STR-BUKRS sy-vline 
WA_T7GR4APD_STR-PYEAR sy-vline 
WA_T7GR4APD_STR-PMONT sy-vline 
WA_T7GR4APD_STR-PERNR sy-vline 
WA_T7GR4APD_STR-KAD sy-vline 
WA_T7GR4APD_STR-SPIKA sy-vline 
WA_T7GR4APD_STR-KPK sy-vline 
WA_T7GR4APD_STR-ENDDA sy-vline 
WA_T7GR4APD_STR-BEGDA sy-vline 
WA_T7GR4APD_STR-PYTYP sy-vline 
WA_T7GR4APD_STR-APDTP sy-vline 
WA_T7GR4APD_STR-SEQNB sy-vline 
WA_T7GR4APD_STR-DEPAR sy-vline 
WA_T7GR4APD_STR-SPINS sy-vline 
WA_T7GR4APD_STR-NACHN sy-vline 
WA_T7GR4APD_STR-VORNA sy-vline 
WA_T7GR4APD_STR-FATHE sy-vline 
WA_T7GR4APD_STR-MOTHE sy-vline 
WA_T7GR4APD_STR-GBDAT sy-vline 
WA_T7GR4APD_STR-AFM sy-vline 
WA_T7GR4APD_STR-TYINS sy-vline 
WA_T7GR4APD_STR-REG01 sy-vline 
WA_T7GR4APD_STR-AMKA sy-vline 
WA_T7GR4APD_STR-SALARY sy-vline 
WA_T7GR4APD_STR-FSCHD sy-vline 
WA_T7GR4APD_STR-ALLDA sy-vline 
WA_T7GR4APD_STR-INSUD sy-vline 
WA_T7GR4APD_STR-WSUND sy-vline 
WA_T7GR4APD_STR-GROSS sy-vline 
WA_T7GR4APD_STR-IKAEE sy-vline 
WA_T7GR4APD_STR-IKAER sy-vline 
WA_T7GR4APD_STR-IKASM sy-vline 
WA_T7GR4APD_STR-IKASE sy-vline 
WA_T7GR4APD_STR-IKAPR sy-vline 
WA_T7GR4APD_STR-IKASR sy-vline 
WA_T7GR4APD_STR-IKAPM sy-vline 
WA_T7GR4APD_STR-WAERS sy-vline 
WA_T7GR4APD_STR-BONDT sy-vline 
WA_T7GR4APD_STR-PAPER sy-vline 
WA_T7GR4APD_STR-PTAPD sy-vline      INTO ld_text SEPARATED BY SPACE.

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