ABAP Select data from SAP table /PF1/DB_AR_ITCOR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PF1/DB_AR_ITCOR 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 /PF1/DB_AR_ITCOR. 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 /PF1/DB_AR_ITCOR 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_/PF1/DB_AR_ITCOR TYPE STANDARD TABLE OF /PF1/DB_AR_ITCOR,
      WA_/PF1/DB_AR_ITCOR TYPE /PF1/DB_AR_ITCOR,
      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: </PF1/DB_AR_ITCOR> TYPE /PF1/DB_AR_ITCOR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PF1/DB_AR_ITCOR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PF1/DB_AR_ITCOR
  INTO TABLE IT_/PF1/DB_AR_ITCOR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PF1/DB_AR_ITCOR
*  INTO TABLE @DATA(IT_/PF1/DB_AR_ITCOR2).
*--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_/PF1/DB_AR_ITCOR INDEX 1 INTO DATA(WA_/PF1/DB_AR_ITCOR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PF1/DB_AR_ITCOR ASSIGNING </PF1/DB_AR_ITCOR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PF1/DB_AR_ITCOR>-CLIENT = 1.
</PF1/DB_AR_ITCOR>-CLEARING_AREA = 1.
</PF1/DB_AR_ITCOR>-PI_DATE = 1.
</PF1/DB_AR_ITCOR>-PI_NO = 1.
</PF1/DB_AR_ITCOR>-TIME_STAMP = 1.

ENDLOOP.

LOOP AT IT_/PF1/DB_AR_ITCOR INTO WA_/PF1/DB_AR_ITCOR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PF1/DB_AR_ITCOR-INP_PO_CORR, sy-vline,
  WA_/PF1/DB_AR_ITCOR-OUTP_PO_CORR, sy-vline,
  WA_/PF1/DB_AR_ITCOR-OUT_INF_CORR, sy-vline,
  WA_/PF1/DB_AR_ITCOR-RECALL_CORR, sy-vline,
  WA_/PF1/DB_AR_ITCOR-REF_INP_PO_DATE, sy-vline,
  WA_/PF1/DB_AR_ITCOR-REF_INP_PO_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PF1/DB_AR_ITCOR 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_/PF1/DB_AR_ITCOR 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_/PF1/DB_AR_ITCOR INTO WA_/PF1/DB_AR_ITCOR.


*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_/PF1/DB_AR_ITCOR_STR, 
CLIENT TYPE STRING,
CLEARING_AREA TYPE STRING,
PI_DATE TYPE STRING,
PI_NO TYPE STRING,
TIME_STAMP TYPE STRING,
INP_PO_CORR TYPE STRING,
OUTP_PO_CORR TYPE STRING,
OUT_INF_CORR TYPE STRING,
RECALL_CORR TYPE STRING,
REF_INP_PO_DATE TYPE STRING,
REF_INP_PO_NO TYPE STRING,
REF_OUTP_PO_DATE TYPE STRING,
REF_OUTP_PO_NO TYPE STRING,
REF_OUT_INF_DATE TYPE STRING,
REF_OUT_INF_NO TYPE STRING,
REF_RECALL_DATE TYPE STRING,
REF_RECALL_NO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PF1/DB_AR_ITCOR_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_/PF1/DB_AR_ITCOR_STR-CLIENT sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-CLEARING_AREA sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-PI_DATE sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-PI_NO sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-TIME_STAMP sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-INP_PO_CORR sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-OUTP_PO_CORR sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-OUT_INF_CORR sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-RECALL_CORR sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_INP_PO_DATE sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_INP_PO_NO sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_OUTP_PO_DATE sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_OUTP_PO_NO sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_OUT_INF_DATE sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_OUT_INF_NO sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_RECALL_DATE sy-vline 
WA_/PF1/DB_AR_ITCOR_STR-REF_RECALL_NO sy-vline      INTO ld_text SEPARATED BY SPACE.

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