ABAP Select data from SAP table KLSI_DI0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KLSI_DI0 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 KLSI_DI0. 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 KLSI_DI0 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_KLSI_DI0 TYPE STANDARD TABLE OF KLSI_DI0,
      WA_KLSI_DI0 TYPE KLSI_DI0,
      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: <KLSI_DI0> TYPE KLSI_DI0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KLSI_DI0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KLSI_DI0
  INTO TABLE IT_KLSI_DI0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KLSI_DI0
*  INTO TABLE @DATA(IT_KLSI_DI02).
*--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_KLSI_DI0 INDEX 1 INTO DATA(WA_KLSI_DI02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KLSI_DI0 ASSIGNING <KLSI_DI0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KLSI_DI0>-SETTYP = 1.
<KLSI_DI0>-MODUS = 1.
<KLSI_DI0>-SIDEXT = 1.
<KLSI_DI0>-SID_NAME = 1.
<KLSI_DI0>-SID_KTXT = 1.

ENDLOOP.

LOOP AT IT_KLSI_DI0 INTO WA_KLSI_DI0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KLSI_DI0-SITYP, sy-vline,
  WA_KLSI_DI0-SIGEBER, sy-vline,
  WA_KLSI_DI0-SIART, sy-vline,
  WA_KLSI_DI0-BESITYP, sy-vline,
  WA_KLSI_DI0-DELFZ, sy-vline,
  WA_KLSI_DI0-XAKT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KLSI_DI0 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_KLSI_DI0 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_KLSI_DI0 INTO WA_KLSI_DI0.


*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 SIGEBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-SIGEBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-SIGEBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-PARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RFHA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-RFHA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-RFHA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RANLW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-RANLW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-RANLW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RIDXRT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-RIDXRT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-RIDXRT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RIDBSTD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-RIDBSTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-RIDBSTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ACEXT, internal->external for field ACNUM_EXT
CALL FUNCTION 'CONVERSION_EXIT_ACEXT_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-ACNUM_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-ACNUM_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RESERVG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KLSI_DI0-RESERVG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KLSI_DI0-RESERVG.
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_KLSI_DI0_STR, 
SETTYP TYPE STRING,
MODUS TYPE STRING,
SIDEXT TYPE STRING,
SID_NAME TYPE STRING,
SID_KTXT TYPE STRING,
SITYP TYPE STRING,
SIGEBER TYPE STRING,
SIART TYPE STRING,
BESITYP TYPE STRING,
DELFZ TYPE STRING,
XAKT TYPE STRING,
SIPRIO TYPE STRING,
NID TYPE STRING,
BTHA TYPE STRING,
BMTA TYPE STRING,
SCA TYPE STRING,
DGUEL TYPE STRING,
BAZ TYPE STRING,
SAZ TYPE STRING,
BESANT TYPE STRING,
BESANTP TYPE STRING,
SSIWHR TYPE STRING,
BSIWHR TYPE STRING,
BSIWHRP TYPE STRING,
ASTUECK TYPE STRING,
PARTNR TYPE STRING,
SLPG TYPE STRING,
OBJTYP TYPE STRING,
BUKRS TYPE STRING,
RANLALT1 TYPE STRING,
RANL TYPE STRING,
NORDEXT TYPE STRING,
NORDER TYPE STRING,
REXTNR TYPE STRING,
RBKONT TYPE STRING,
RFHA TYPE STRING,
RUBEST TYPE STRING,
RANLW TYPE STRING,
RLDEPO TYPE STRING,
RIDEXT TYPE STRING,
RIDXRT TYPE STRING,
RIDBSTDEXT TYPE STRING,
RIDBSTD TYPE STRING,
SSHLNG TYPE STRING,
RBESTO TYPE STRING,
ACNUM_EXT TYPE STRING,
BKKRS TYPE STRING,
EXTNR TYPE STRING,
RESERVGEXT TYPE STRING,
RESERVG TYPE STRING,
VTNUM TYPE STRING,
FAZNR TYPE STRING,
FAZID TYPE STRING,
ORG_INDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KLSI_DI0_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_KLSI_DI0_STR-SETTYP sy-vline 
WA_KLSI_DI0_STR-MODUS sy-vline 
WA_KLSI_DI0_STR-SIDEXT sy-vline 
WA_KLSI_DI0_STR-SID_NAME sy-vline 
WA_KLSI_DI0_STR-SID_KTXT sy-vline 
WA_KLSI_DI0_STR-SITYP sy-vline 
WA_KLSI_DI0_STR-SIGEBER sy-vline 
WA_KLSI_DI0_STR-SIART sy-vline 
WA_KLSI_DI0_STR-BESITYP sy-vline 
WA_KLSI_DI0_STR-DELFZ sy-vline 
WA_KLSI_DI0_STR-XAKT sy-vline 
WA_KLSI_DI0_STR-SIPRIO sy-vline 
WA_KLSI_DI0_STR-NID sy-vline 
WA_KLSI_DI0_STR-BTHA sy-vline 
WA_KLSI_DI0_STR-BMTA sy-vline 
WA_KLSI_DI0_STR-SCA sy-vline 
WA_KLSI_DI0_STR-DGUEL sy-vline 
WA_KLSI_DI0_STR-BAZ sy-vline 
WA_KLSI_DI0_STR-SAZ sy-vline 
WA_KLSI_DI0_STR-BESANT sy-vline 
WA_KLSI_DI0_STR-BESANTP sy-vline 
WA_KLSI_DI0_STR-SSIWHR sy-vline 
WA_KLSI_DI0_STR-BSIWHR sy-vline 
WA_KLSI_DI0_STR-BSIWHRP sy-vline 
WA_KLSI_DI0_STR-ASTUECK sy-vline 
WA_KLSI_DI0_STR-PARTNR sy-vline 
WA_KLSI_DI0_STR-SLPG sy-vline 
WA_KLSI_DI0_STR-OBJTYP sy-vline 
WA_KLSI_DI0_STR-BUKRS sy-vline 
WA_KLSI_DI0_STR-RANLALT1 sy-vline 
WA_KLSI_DI0_STR-RANL sy-vline 
WA_KLSI_DI0_STR-NORDEXT sy-vline 
WA_KLSI_DI0_STR-NORDER sy-vline 
WA_KLSI_DI0_STR-REXTNR sy-vline 
WA_KLSI_DI0_STR-RBKONT sy-vline 
WA_KLSI_DI0_STR-RFHA sy-vline 
WA_KLSI_DI0_STR-RUBEST sy-vline 
WA_KLSI_DI0_STR-RANLW sy-vline 
WA_KLSI_DI0_STR-RLDEPO sy-vline 
WA_KLSI_DI0_STR-RIDEXT sy-vline 
WA_KLSI_DI0_STR-RIDXRT sy-vline 
WA_KLSI_DI0_STR-RIDBSTDEXT sy-vline 
WA_KLSI_DI0_STR-RIDBSTD sy-vline 
WA_KLSI_DI0_STR-SSHLNG sy-vline 
WA_KLSI_DI0_STR-RBESTO sy-vline 
WA_KLSI_DI0_STR-ACNUM_EXT sy-vline 
WA_KLSI_DI0_STR-BKKRS sy-vline 
WA_KLSI_DI0_STR-EXTNR sy-vline 
WA_KLSI_DI0_STR-RESERVGEXT sy-vline 
WA_KLSI_DI0_STR-RESERVG sy-vline 
WA_KLSI_DI0_STR-VTNUM sy-vline 
WA_KLSI_DI0_STR-FAZNR sy-vline 
WA_KLSI_DI0_STR-FAZID sy-vline 
WA_KLSI_DI0_STR-ORG_INDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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