ABAP Select data from SAP table PCO_FIA_CAJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCO_FIA_CAJ
*  INTO TABLE @DATA(IT_PCO_FIA_CAJ2).
*--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_PCO_FIA_CAJ INDEX 1 INTO DATA(WA_PCO_FIA_CAJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCO_FIA_CAJ>-IDREG = 1.
<PCO_FIA_CAJ>-SEQNR = 1.
<PCO_FIA_CAJ>-ECAJA = 1.
<PCO_FIA_CAJ>-NITNR = 1.
<PCO_FIA_CAJ>-DIGNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCO_FIA_CAJ-BTCAJ, sy-vline,
  WA_PCO_FIA_CAJ-DYSMO, sy-vline,
  WA_PCO_FIA_CAJ-BTIDM, sy-vline,
  WA_PCO_FIA_CAJ-BTTAP, sy-vline,
  WA_PCO_FIA_CAJ-NREMP, sy-vline,
  WA_PCO_FIA_CAJ-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCO_FIA_CAJ 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_PCO_FIA_CAJ 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_PCO_FIA_CAJ INTO WA_PCO_FIA_CAJ.


*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 ECAJA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCO_FIA_CAJ-ECAJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCO_FIA_CAJ-ECAJA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ESCCF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCO_FIA_CAJ-ESCCF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCO_FIA_CAJ-ESCCF.
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_PCO_FIA_CAJ_STR, 
IDREG TYPE STRING,
SEQNR TYPE STRING,
ECAJA TYPE STRING,
NITNR TYPE STRING,
DIGNR TYPE STRING,
BTCAJ TYPE STRING,
DYSMO TYPE STRING,
BTIDM TYPE STRING,
BTTAP TYPE STRING,
NREMP TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
BRANC TYPE STRING,
ESCCF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCO_FIA_CAJ_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_PCO_FIA_CAJ_STR-IDREG sy-vline 
WA_PCO_FIA_CAJ_STR-SEQNR sy-vline 
WA_PCO_FIA_CAJ_STR-ECAJA sy-vline 
WA_PCO_FIA_CAJ_STR-NITNR sy-vline 
WA_PCO_FIA_CAJ_STR-DIGNR sy-vline 
WA_PCO_FIA_CAJ_STR-BTCAJ sy-vline 
WA_PCO_FIA_CAJ_STR-DYSMO sy-vline 
WA_PCO_FIA_CAJ_STR-BTIDM sy-vline 
WA_PCO_FIA_CAJ_STR-BTTAP sy-vline 
WA_PCO_FIA_CAJ_STR-NREMP sy-vline 
WA_PCO_FIA_CAJ_STR-WAERS sy-vline 
WA_PCO_FIA_CAJ_STR-BUKRS sy-vline 
WA_PCO_FIA_CAJ_STR-BRANC sy-vline 
WA_PCO_FIA_CAJ_STR-ESCCF sy-vline      INTO ld_text SEPARATED BY SPACE.

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