ABAP Select data from SAP table KALA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KALA
*  INTO TABLE @DATA(IT_KALA2).
*--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_KALA INDEX 1 INTO DATA(WA_KALA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KALA>-MANDT = 1.
<KALA>-KALAID = 1.
<KALA>-KALADAT = 1.
<KALA>-TVERS = 1.
<KALA>-CPUDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KALA-KADAT, sy-vline,
  WA_KALA-BIDAT, sy-vline,
  WA_KALA-BWDAT, sy-vline,
  WA_KALA-ALDAT, sy-vline,
  WA_KALA-BEDAT, sy-vline,
  WA_KALA-LOEKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KALA 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_KALA 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_KALA INTO WA_KALA.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KALA-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALA-SPRAS.
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_KALA_STR, 
MANDT TYPE STRING,
KALAID TYPE STRING,
KALADAT TYPE STRING,
TVERS TYPE STRING,
CPUDT TYPE STRING,
KADAT TYPE STRING,
BIDAT TYPE STRING,
BWDAT TYPE STRING,
ALDAT TYPE STRING,
BEDAT TYPE STRING,
LOEKZ TYPE STRING,
ERFNM TYPE STRING,
SPRAS TYPE STRING,
KALABEZ TYPE STRING,
PARAVB1 TYPE STRING,
PARAVB2 TYPE STRING,
PARAVB3 TYPE STRING,
PARADR1 TYPE STRING,
PARADR2 TYPE STRING,
KALKA TYPE STRING,
BZOBJ TYPE STRING,
MGTYP TYPE STRING,
MGTYP2 TYPE STRING,
MGTYP3 TYPE STRING,
AUFKZ TYPE STRING,
FEH_STATUS TYPE STRING,
BUKRS TYPE STRING,
RSUBD TYPE STRING,
OCS_KZ TYPE STRING,
KLVAF TYPE STRING,
FEH_STATUF TYPE STRING,
FBB_ANZ TYPE STRING,
CUOBJID TYPE STRING,
PRADR3 TYPE STRING,
PARADRUSR1 TYPE STRING,
PARADRUSR2 TYPE STRING,
PARADRUSR3 TYPE STRING,
UEBID TYPE STRING,
NOUEB TYPE STRING,
PARADR4 TYPE STRING,
PARADR5 TYPE STRING,
PARADR6 TYPE STRING,
PARAVB4 TYPE STRING,
PARAVB5 TYPE STRING,
PARAVB6 TYPE STRING,
PARADR7 TYPE STRING,
PARADR8 TYPE STRING,
KOKRS TYPE STRING,
BUUEKA TYPE STRING,
USER1VIEW TYPE STRING,
USER2VIEW TYPE STRING,
USER3VIEW TYPE STRING,
RFC_GROUP TYPE STRING,
ONLYKF TYPE STRING,
MAXE TYPE STRING,
MAXW TYPE STRING,
FREQ TYPE STRING,
REC_STEP TYPE STRING,
REC_DATE TYPE STRING,
REC_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KALA_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_KALA_STR-MANDT sy-vline 
WA_KALA_STR-KALAID sy-vline 
WA_KALA_STR-KALADAT sy-vline 
WA_KALA_STR-TVERS sy-vline 
WA_KALA_STR-CPUDT sy-vline 
WA_KALA_STR-KADAT sy-vline 
WA_KALA_STR-BIDAT sy-vline 
WA_KALA_STR-BWDAT sy-vline 
WA_KALA_STR-ALDAT sy-vline 
WA_KALA_STR-BEDAT sy-vline 
WA_KALA_STR-LOEKZ sy-vline 
WA_KALA_STR-ERFNM sy-vline 
WA_KALA_STR-SPRAS sy-vline 
WA_KALA_STR-KALABEZ sy-vline 
WA_KALA_STR-PARAVB1 sy-vline 
WA_KALA_STR-PARAVB2 sy-vline 
WA_KALA_STR-PARAVB3 sy-vline 
WA_KALA_STR-PARADR1 sy-vline 
WA_KALA_STR-PARADR2 sy-vline 
WA_KALA_STR-KALKA sy-vline 
WA_KALA_STR-BZOBJ sy-vline 
WA_KALA_STR-MGTYP sy-vline 
WA_KALA_STR-MGTYP2 sy-vline 
WA_KALA_STR-MGTYP3 sy-vline 
WA_KALA_STR-AUFKZ sy-vline 
WA_KALA_STR-FEH_STATUS sy-vline 
WA_KALA_STR-BUKRS sy-vline 
WA_KALA_STR-RSUBD sy-vline 
WA_KALA_STR-OCS_KZ sy-vline 
WA_KALA_STR-KLVAF sy-vline 
WA_KALA_STR-FEH_STATUF sy-vline 
WA_KALA_STR-FBB_ANZ sy-vline 
WA_KALA_STR-CUOBJID sy-vline 
WA_KALA_STR-PRADR3 sy-vline 
WA_KALA_STR-PARADRUSR1 sy-vline 
WA_KALA_STR-PARADRUSR2 sy-vline 
WA_KALA_STR-PARADRUSR3 sy-vline 
WA_KALA_STR-UEBID sy-vline 
WA_KALA_STR-NOUEB sy-vline 
WA_KALA_STR-PARADR4 sy-vline 
WA_KALA_STR-PARADR5 sy-vline 
WA_KALA_STR-PARADR6 sy-vline 
WA_KALA_STR-PARAVB4 sy-vline 
WA_KALA_STR-PARAVB5 sy-vline 
WA_KALA_STR-PARAVB6 sy-vline 
WA_KALA_STR-PARADR7 sy-vline 
WA_KALA_STR-PARADR8 sy-vline 
WA_KALA_STR-KOKRS sy-vline 
WA_KALA_STR-BUUEKA sy-vline 
WA_KALA_STR-USER1VIEW sy-vline 
WA_KALA_STR-USER2VIEW sy-vline 
WA_KALA_STR-USER3VIEW sy-vline 
WA_KALA_STR-RFC_GROUP sy-vline 
WA_KALA_STR-ONLYKF sy-vline 
WA_KALA_STR-MAXE sy-vline 
WA_KALA_STR-MAXW sy-vline 
WA_KALA_STR-FREQ sy-vline 
WA_KALA_STR-REC_STEP sy-vline 
WA_KALA_STR-REC_DATE sy-vline 
WA_KALA_STR-REC_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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