ABAP Select data from SAP table PRU_1NDFL_CMONTHS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PRU_1NDFL_CMONTHS 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 PRU_1NDFL_CMONTHS. 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 PRU_1NDFL_CMONTHS 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_PRU_1NDFL_CMONTHS TYPE STANDARD TABLE OF PRU_1NDFL_CMONTHS,
      WA_PRU_1NDFL_CMONTHS TYPE PRU_1NDFL_CMONTHS,
      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: <PRU_1NDFL_CMONTHS> TYPE PRU_1NDFL_CMONTHS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PRU_1NDFL_CMONTHS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PRU_1NDFL_CMONTHS
  INTO TABLE IT_PRU_1NDFL_CMONTHS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRU_1NDFL_CMONTHS
*  INTO TABLE @DATA(IT_PRU_1NDFL_CMONTHS2).
*--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_PRU_1NDFL_CMONTHS INDEX 1 INTO DATA(WA_PRU_1NDFL_CMONTHS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PRU_1NDFL_CMONTHS ASSIGNING <PRU_1NDFL_CMONTHS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRU_1NDFL_CMONTHS>-CODE = 1.
<PRU_1NDFL_CMONTHS>-M01 = 1.
<PRU_1NDFL_CMONTHS>-M02 = 1.
<PRU_1NDFL_CMONTHS>-M03 = 1.
<PRU_1NDFL_CMONTHS>-M04 = 1.

ENDLOOP.

LOOP AT IT_PRU_1NDFL_CMONTHS INTO WA_PRU_1NDFL_CMONTHS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRU_1NDFL_CMONTHS-M05, sy-vline,
  WA_PRU_1NDFL_CMONTHS-M06, sy-vline,
  WA_PRU_1NDFL_CMONTHS-M07, sy-vline,
  WA_PRU_1NDFL_CMONTHS-M08, sy-vline,
  WA_PRU_1NDFL_CMONTHS-M09, sy-vline,
  WA_PRU_1NDFL_CMONTHS-M10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRU_1NDFL_CMONTHS 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_PRU_1NDFL_CMONTHS 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_PRU_1NDFL_CMONTHS INTO WA_PRU_1NDFL_CMONTHS.


*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_PRU_1NDFL_CMONTHS_STR, 
CODE TYPE STRING,
M01 TYPE STRING,
M02 TYPE STRING,
M03 TYPE STRING,
M04 TYPE STRING,
M05 TYPE STRING,
M06 TYPE STRING,
M07 TYPE STRING,
M08 TYPE STRING,
M09 TYPE STRING,
M10 TYPE STRING,
M11 TYPE STRING,
M12 TYPE STRING,
YSUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRU_1NDFL_CMONTHS_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_PRU_1NDFL_CMONTHS_STR-CODE sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M01 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M02 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M03 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M04 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M05 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M06 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M07 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M08 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M09 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M10 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M11 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-M12 sy-vline 
WA_PRU_1NDFL_CMONTHS_STR-YSUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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