ABAP Select data from SAP table KABCALC_RES_TAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KABCALC_RES_TAB
*  INTO TABLE @DATA(IT_KABCALC_RES_TAB2).
*--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_KABCALC_RES_TAB INDEX 1 INTO DATA(WA_KABCALC_RES_TAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KABCALC_RES_TAB>-DATUM = 1.
<KABCALC_RES_TAB>-MENGE = 1.
<KABCALC_RES_TAB>-GGMNG = 1.
<KABCALC_RES_TAB>-NEXAZ = 1.
<KABCALC_RES_TAB>-NEXMG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KABCALC_RES_TAB-PCMAA_RFT, sy-vline,
  WA_KABCALC_RES_TAB-PCMAM_RFT, sy-vline,
  WA_KABCALC_RES_TAB-PCMAA_WT, sy-vline,
  WA_KABCALC_RES_TAB-PCMAM_WT, sy-vline,
  WA_KABCALC_RES_TAB-PCMAA_ITT, sy-vline,
  WA_KABCALC_RES_TAB-PCMAM_ITT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KABCALC_RES_TAB 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_KABCALC_RES_TAB 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_KABCALC_RES_TAB INTO WA_KABCALC_RES_TAB.


*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_KABCALC_RES_TAB_STR, 
DATUM TYPE STRING,
MENGE TYPE STRING,
GGMNG TYPE STRING,
NEXAZ TYPE STRING,
NEXMG TYPE STRING,
PCMAA_RFT TYPE STRING,
PCMAM_RFT TYPE STRING,
PCMAA_WT TYPE STRING,
PCMAM_WT TYPE STRING,
PCMAA_ITT TYPE STRING,
PCMAM_ITT TYPE STRING,
PCMAA_PIT TYPE STRING,
PCMAM_PIT TYPE STRING,
PCMAA_CALBUF TYPE STRING,
PCMAM_CALBUF TYPE STRING,
PCMAA_VOLAT TYPE STRING,
PCMAM_VOLAT TYPE STRING,
PCMAA_DMBUF TYPE STRING,
PCMAM_DMBUF TYPE STRING,
PCMAA_SUPBUF TYPE STRING,
PCMAM_SUPBUF TYPE STRING,
PCMAA_NOPARA TYPE STRING,
PCMAM_NOPARA TYPE STRING,
PCMAA_SFC TYPE STRING,
PCMAM_SFC TYPE STRING,
PCMAA_CAPABUF TYPE STRING,
CAPA_WRKCT TYPE STRING,
CAPA_UTL_T TYPE STRING,
CAPA_UTL_P TYPE STRING,
CAPA_UTL_S TYPE STRING,
PCMAA_EXIT TYPE STRING,
PCMAM_EXIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KABCALC_RES_TAB_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_KABCALC_RES_TAB_STR-DATUM sy-vline 
WA_KABCALC_RES_TAB_STR-MENGE sy-vline 
WA_KABCALC_RES_TAB_STR-GGMNG sy-vline 
WA_KABCALC_RES_TAB_STR-NEXAZ sy-vline 
WA_KABCALC_RES_TAB_STR-NEXMG sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_RFT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_RFT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_WT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_WT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_ITT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_ITT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_PIT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_PIT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_CALBUF sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_CALBUF sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_VOLAT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_VOLAT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_DMBUF sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_DMBUF sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_SUPBUF sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_SUPBUF sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_NOPARA sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_NOPARA sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_SFC sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_SFC sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_CAPABUF sy-vline 
WA_KABCALC_RES_TAB_STR-CAPA_WRKCT sy-vline 
WA_KABCALC_RES_TAB_STR-CAPA_UTL_T sy-vline 
WA_KABCALC_RES_TAB_STR-CAPA_UTL_P sy-vline 
WA_KABCALC_RES_TAB_STR-CAPA_UTL_S sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAA_EXIT sy-vline 
WA_KABCALC_RES_TAB_STR-PCMAM_EXIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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