ABAP Select data from SAP table PCN_INCOME_ROW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCN_INCOME_ROW
*  INTO TABLE @DATA(IT_PCN_INCOME_ROW2).
*--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_PCN_INCOME_ROW INDEX 1 INTO DATA(WA_PCN_INCOME_ROW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCN_INCOME_ROW>-FIELDNAME = 1.
<PCN_INCOME_ROW>-TEXT = 1.
<PCN_INCOME_ROW>-WAERS = 1.
<PCN_INCOME_ROW>-AMT01 = 1.
<PCN_INCOME_ROW>-AMT02 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCN_INCOME_ROW-AMT03, sy-vline,
  WA_PCN_INCOME_ROW-AMT04, sy-vline,
  WA_PCN_INCOME_ROW-AMT05, sy-vline,
  WA_PCN_INCOME_ROW-AMT06, sy-vline,
  WA_PCN_INCOME_ROW-AMT07, sy-vline,
  WA_PCN_INCOME_ROW-AMT08, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCN_INCOME_ROW 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_PCN_INCOME_ROW 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_PCN_INCOME_ROW INTO WA_PCN_INCOME_ROW.


*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_PCN_INCOME_ROW_STR, 
FIELDNAME TYPE STRING,
TEXT TYPE STRING,
WAERS TYPE STRING,
AMT01 TYPE STRING,
AMT02 TYPE STRING,
AMT03 TYPE STRING,
AMT04 TYPE STRING,
AMT05 TYPE STRING,
AMT06 TYPE STRING,
AMT07 TYPE STRING,
AMT08 TYPE STRING,
AMT09 TYPE STRING,
AMT10 TYPE STRING,
AMT11 TYPE STRING,
AMT12 TYPE STRING,
TOTAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCN_INCOME_ROW_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_PCN_INCOME_ROW_STR-FIELDNAME sy-vline 
WA_PCN_INCOME_ROW_STR-TEXT sy-vline 
WA_PCN_INCOME_ROW_STR-WAERS sy-vline 
WA_PCN_INCOME_ROW_STR-AMT01 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT02 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT03 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT04 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT05 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT06 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT07 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT08 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT09 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT10 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT11 sy-vline 
WA_PCN_INCOME_ROW_STR-AMT12 sy-vline 
WA_PCN_INCOME_ROW_STR-TOTAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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