ABAP Select data from SAP table PC2091 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2091 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 PC2091. 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 PC2091 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_PC2091 TYPE STANDARD TABLE OF PC2091,
      WA_PC2091 TYPE PC2091,
      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: <PC2091> TYPE PC2091.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2091.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2091
  INTO TABLE IT_PC2091.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2091
*  INTO TABLE @DATA(IT_PC20912).
*--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_PC2091 INDEX 1 INTO DATA(WA_PC20912).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2091 ASSIGNING <PC2091>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2091>-BTZNR = 1.
<PC2091>-LGART = 1.
<PC2091>-BETRG = 1.
<PC2091>-ZLSCH = 1.
<PC2091>-EMFTX = 1.

ENDLOOP.

LOOP AT IT_PC2091 INTO WA_PC2091.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2091-BKPLZ, sy-vline,
  WA_PC2091-BKORT, sy-vline,
  WA_PC2091-BANKS, sy-vline,
  WA_PC2091-BANKL, sy-vline,
  WA_PC2091-BANKN, sy-vline,
  WA_PC2091-EMFSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC2091 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_PC2091 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_PC2091 INTO WA_PC2091.


*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 ALPHA, internal->external for field ESRRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PC2091-ESRRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PC2091-ESRRE.
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_PC2091_STR, 
BTZNR TYPE STRING,
LGART TYPE STRING,
BETRG TYPE STRING,
ZLSCH TYPE STRING,
EMFTX TYPE STRING,
BKPLZ TYPE STRING,
BKORT TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
EMFSL TYPE STRING,
ZWECK TYPE STRING,
VBAFM TYPE STRING,
DTADT TYPE STRING,
DTATI TYPE STRING,
DTAID TYPE STRING,
BTTYP TYPE STRING,
PSKTO TYPE STRING,
WAERS TYPE STRING,
STRAS TYPE STRING,
BKONT TYPE STRING,
FBETR TYPE STRING,
STATE TYPE STRING,
ESRNR TYPE STRING,
ESRRE TYPE STRING,
ESRPZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC2091_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_PC2091_STR-BTZNR sy-vline 
WA_PC2091_STR-LGART sy-vline 
WA_PC2091_STR-BETRG sy-vline 
WA_PC2091_STR-ZLSCH sy-vline 
WA_PC2091_STR-EMFTX sy-vline 
WA_PC2091_STR-BKPLZ sy-vline 
WA_PC2091_STR-BKORT sy-vline 
WA_PC2091_STR-BANKS sy-vline 
WA_PC2091_STR-BANKL sy-vline 
WA_PC2091_STR-BANKN sy-vline 
WA_PC2091_STR-EMFSL sy-vline 
WA_PC2091_STR-ZWECK sy-vline 
WA_PC2091_STR-VBAFM sy-vline 
WA_PC2091_STR-DTADT sy-vline 
WA_PC2091_STR-DTATI sy-vline 
WA_PC2091_STR-DTAID sy-vline 
WA_PC2091_STR-BTTYP sy-vline 
WA_PC2091_STR-PSKTO sy-vline 
WA_PC2091_STR-WAERS sy-vline 
WA_PC2091_STR-STRAS sy-vline 
WA_PC2091_STR-BKONT sy-vline 
WA_PC2091_STR-FBETR sy-vline 
WA_PC2091_STR-STATE sy-vline 
WA_PC2091_STR-ESRNR sy-vline 
WA_PC2091_STR-ESRRE sy-vline 
WA_PC2091_STR-ESRPZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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