ABAP Select data from SAP table P44_ATSEE2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P44_ATSEE2 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 P44_ATSEE2. 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 P44_ATSEE2 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_P44_ATSEE2 TYPE STANDARD TABLE OF P44_ATSEE2,
      WA_P44_ATSEE2 TYPE P44_ATSEE2,
      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: <P44_ATSEE2> TYPE P44_ATSEE2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P44_ATSEE2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P44_ATSEE2
  INTO TABLE IT_P44_ATSEE2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P44_ATSEE2
*  INTO TABLE @DATA(IT_P44_ATSEE22).
*--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_P44_ATSEE2 INDEX 1 INTO DATA(WA_P44_ATSEE22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P44_ATSEE2 ASSIGNING <P44_ATSEE2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P44_ATSEE2>-PERNR = 1.
<P44_ATSEE2>-ATSDC = 1.
<P44_ATSEE2>-ATS0T = 1.
<P44_ATSEE2>-TXRNO = 1.
<P44_ATSEE2>-ATSYR = 1.

ENDLOOP.

LOOP AT IT_P44_ATSEE2 INTO WA_P44_ATSEE2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P44_ATSEE2-EVENT, sy-vline,
  WA_P44_ATSEE2-TCURR, sy-vline,
  WA_P44_ATSEE2-PAYID, sy-vline,
  WA_P44_ATSEE2-PERID, sy-vline,
  WA_P44_ATSEE2-ATSMO, sy-vline,
  WA_P44_ATSEE2-GROSS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P44_ATSEE2 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_P44_ATSEE2 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_P44_ATSEE2 INTO WA_P44_ATSEE2.


*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_P44_ATSEE2_STR, 
PERNR TYPE STRING,
ATSDC TYPE STRING,
ATS0T TYPE STRING,
TXRNO TYPE STRING,
ATSYR TYPE STRING,
EVENT TYPE STRING,
TCURR TYPE STRING,
PAYID TYPE STRING,
PERID TYPE STRING,
ATSMO TYPE STRING,
GROSS TYPE STRING,
TAXWH TYPE STRING,
INSUR TYPE STRING,
DEDUC TYPE STRING,
BENCC TYPE STRING,
DEDCC TYPE STRING,
KMLOG TYPE STRING,
AGECC TYPE STRING,
UNLCC TYPE STRING,
LIMCC TYPE STRING,
BENHL TYPE STRING,
BENOC TYPE STRING,
BENOD TYPE STRING,
BENAP TYPE STRING,
BENTL TYPE STRING,
BENLU TYPE STRING,
BENOT TYPE STRING,
BENLT TYPE STRING,
EXPTL TYPE STRING,
EXPDY TYPE STRING,
EXPHD TYPE STRING,
EXPDA TYPE STRING,
EXPLU TYPE STRING,
EXPKM TYPE STRING,
EXPKP TYPE STRING,
EECST TYPE STRING,
VPNEX TYPE STRING,
VPEXC TYPE STRING,
VPWOC TYPE STRING,
VPB92 TYPE STRING,
VPCON TYPE STRING,
BENOP TYPE STRING,
NDYAL TYPE STRING,
TWKBU TYPE STRING,
TRWKB TYPE STRING,
PYPST TYPE STRING,
CCPID TYPE STRING,
TRTFA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P44_ATSEE2_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_P44_ATSEE2_STR-PERNR sy-vline 
WA_P44_ATSEE2_STR-ATSDC sy-vline 
WA_P44_ATSEE2_STR-ATS0T sy-vline 
WA_P44_ATSEE2_STR-TXRNO sy-vline 
WA_P44_ATSEE2_STR-ATSYR sy-vline 
WA_P44_ATSEE2_STR-EVENT sy-vline 
WA_P44_ATSEE2_STR-TCURR sy-vline 
WA_P44_ATSEE2_STR-PAYID sy-vline 
WA_P44_ATSEE2_STR-PERID sy-vline 
WA_P44_ATSEE2_STR-ATSMO sy-vline 
WA_P44_ATSEE2_STR-GROSS sy-vline 
WA_P44_ATSEE2_STR-TAXWH sy-vline 
WA_P44_ATSEE2_STR-INSUR sy-vline 
WA_P44_ATSEE2_STR-DEDUC sy-vline 
WA_P44_ATSEE2_STR-BENCC sy-vline 
WA_P44_ATSEE2_STR-DEDCC sy-vline 
WA_P44_ATSEE2_STR-KMLOG sy-vline 
WA_P44_ATSEE2_STR-AGECC sy-vline 
WA_P44_ATSEE2_STR-UNLCC sy-vline 
WA_P44_ATSEE2_STR-LIMCC sy-vline 
WA_P44_ATSEE2_STR-BENHL sy-vline 
WA_P44_ATSEE2_STR-BENOC sy-vline 
WA_P44_ATSEE2_STR-BENOD sy-vline 
WA_P44_ATSEE2_STR-BENAP sy-vline 
WA_P44_ATSEE2_STR-BENTL sy-vline 
WA_P44_ATSEE2_STR-BENLU sy-vline 
WA_P44_ATSEE2_STR-BENOT sy-vline 
WA_P44_ATSEE2_STR-BENLT sy-vline 
WA_P44_ATSEE2_STR-EXPTL sy-vline 
WA_P44_ATSEE2_STR-EXPDY sy-vline 
WA_P44_ATSEE2_STR-EXPHD sy-vline 
WA_P44_ATSEE2_STR-EXPDA sy-vline 
WA_P44_ATSEE2_STR-EXPLU sy-vline 
WA_P44_ATSEE2_STR-EXPKM sy-vline 
WA_P44_ATSEE2_STR-EXPKP sy-vline 
WA_P44_ATSEE2_STR-EECST sy-vline 
WA_P44_ATSEE2_STR-VPNEX sy-vline 
WA_P44_ATSEE2_STR-VPEXC sy-vline 
WA_P44_ATSEE2_STR-VPWOC sy-vline 
WA_P44_ATSEE2_STR-VPB92 sy-vline 
WA_P44_ATSEE2_STR-VPCON sy-vline 
WA_P44_ATSEE2_STR-BENOP sy-vline 
WA_P44_ATSEE2_STR-NDYAL sy-vline 
WA_P44_ATSEE2_STR-TWKBU sy-vline 
WA_P44_ATSEE2_STR-TRWKB sy-vline 
WA_P44_ATSEE2_STR-PYPST sy-vline 
WA_P44_ATSEE2_STR-CCPID sy-vline 
WA_P44_ATSEE2_STR-TRTFA sy-vline      INTO ld_text SEPARATED BY SPACE.

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