ABAP Select data from SAP table KALM into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KALM 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 KALM. 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 KALM 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_KALM TYPE STANDARD TABLE OF KALM,
      WA_KALM TYPE KALM,
      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: <KALM> TYPE KALM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KALM
*  INTO TABLE @DATA(IT_KALM2).
*--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_KALM INDEX 1 INTO DATA(WA_KALM2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KALM-KALVZAE, sy-vline,
  WA_KALM-DISST, sy-vline,
  WA_KALM-CYCLENR, sy-vline,
  WA_KALM-WERKS, sy-vline,
  WA_KALM-MATNR, sy-vline,
  WA_KALM-KALNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KALM 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_KALM 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_KALM INTO WA_KALM.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KALM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_KALM-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STNUM
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_KALM-STNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-STNUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KALM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field TYPE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KALM-TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PROZESS
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KALM-PROZESS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-PROZESS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PR_MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KALM-PR_MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-PR_MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field /CWM/MEINH_BAS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KALM-/CWM/MEINH_BAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-/CWM/MEINH_BAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/MEINH_BEW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KALM-/CWM/MEINH_BEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-/CWM/MEINH_BEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/PRMEINH_BAS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KALM-/CWM/PRMEINH_BAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-/CWM/PRMEINH_BAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/PRMEINH_BEW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KALM-/CWM/PRMEINH_BEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KALM-/CWM/PRMEINH_BEW.
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_KALM_STR, 
MANDT TYPE STRING,
KALAID TYPE STRING,
KALADAT TYPE STRING,
TVERS TYPE STRING,
KALST TYPE STRING,
KALVZAE TYPE STRING,
DISST TYPE STRING,
CYCLENR TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
KALNR TYPE STRING,
BWTAR TYPE STRING,
VERID TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
PSPNR TYPE STRING,
STLAN TYPE STRING,
STNUM TYPE STRING,
STALT TYPE STRING,
STVFIX TYPE STRING,
ALTSL TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNCT TYPE STRING,
LOSGR TYPE STRING,
SUMLO TYPE STRING,
LOSAU TYPE STRING,
AUSSS TYPE STRING,
MEINS TYPE STRING,
KADAT TYPE STRING,
BIDAT TYPE STRING,
ALDAT TYPE STRING,
BEDAT TYPE STRING,
BWDAT TYPE STRING,
FEH_A_ANZ TYPE STRING,
FEH_K_ANZ TYPE STRING,
FEH_STATUS TYPE STRING,
FEH_STATUF TYPE STRING,
DISPO TYPE STRING,
EKGRP TYPE STRING,
LABOR TYPE STRING,
VAGRP TYPE STRING,
SOBSL TYPE STRING,
SOBES TYPE STRING,
SOWRK TYPE STRING,
SODUM TYPE STRING,
SBDKZ TYPE STRING,
BESKZ TYPE STRING,
KOSGR TYPE STRING,
ZSCHL TYPE STRING,
CUOBJ TYPE STRING,
CUOBJID TYPE STRING,
TYPE TYPE STRING,
WRKLT TYPE STRING,
PROZESS TYPE STRING,
KZKUP TYPE STRING,
FXPRU TYPE STRING,
PR_LOSGR TYPE STRING,
PR_SUMLO TYPE STRING,
PR_LOSAU TYPE STRING,
PR_MEINS TYPE STRING,
PR_VERID TYPE STRING,
MLMAA TYPE STRING,
ERFNM TYPE STRING,
ROHSTOFF TYPE STRING,
PRCTR TYPE STRING,
SEGUNIT TYPE STRING,
SPART TYPE STRING,
MTART TYPE STRING,
BALTKZ TYPE STRING,
KALNR_BA TYPE STRING,
MKALK TYPE STRING,
BTYP TYPE STRING,
BVC_SOBSL_USE TYPE STRING,
SGT_COVS TYPE STRING,
SGT_SCAT TYPE STRING,
/CWM/XCWMAT TYPE STRING,
/CWM/LOSGR_BAS TYPE STRING,
/CWM/MEINH_BAS TYPE STRING,
/CWM/LOSGR_BEW TYPE STRING,
/CWM/MEINH_BEW TYPE STRING,
/CWM/PRLOSGR_BAS TYPE STRING,
/CWM/PRMEINH_BAS TYPE STRING,
/CWM/PRLOSGR_BEW TYPE STRING,
/CWM/PRMEINH_BEW TYPE STRING,
IPPE_COSTING TYPE STRING,
CMPEXT_NONCOL TYPE STRING,
CCODE TYPE STRING,
NONCOL_VERID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KALM_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_KALM_STR-MANDT sy-vline 
WA_KALM_STR-KALAID sy-vline 
WA_KALM_STR-KALADAT sy-vline 
WA_KALM_STR-TVERS sy-vline 
WA_KALM_STR-KALST sy-vline 
WA_KALM_STR-KALVZAE sy-vline 
WA_KALM_STR-DISST sy-vline 
WA_KALM_STR-CYCLENR sy-vline 
WA_KALM_STR-WERKS sy-vline 
WA_KALM_STR-MATNR sy-vline 
WA_KALM_STR-KALNR sy-vline 
WA_KALM_STR-BWTAR sy-vline 
WA_KALM_STR-VERID sy-vline 
WA_KALM_STR-VBELN sy-vline 
WA_KALM_STR-POSNR sy-vline 
WA_KALM_STR-PSPNR sy-vline 
WA_KALM_STR-STLAN sy-vline 
WA_KALM_STR-STNUM sy-vline 
WA_KALM_STR-STALT sy-vline 
WA_KALM_STR-STVFIX sy-vline 
WA_KALM_STR-ALTSL sy-vline 
WA_KALM_STR-PLNTY sy-vline 
WA_KALM_STR-PLNNR sy-vline 
WA_KALM_STR-PLNAL sy-vline 
WA_KALM_STR-PLNCT sy-vline 
WA_KALM_STR-LOSGR sy-vline 
WA_KALM_STR-SUMLO sy-vline 
WA_KALM_STR-LOSAU sy-vline 
WA_KALM_STR-AUSSS sy-vline 
WA_KALM_STR-MEINS sy-vline 
WA_KALM_STR-KADAT sy-vline 
WA_KALM_STR-BIDAT sy-vline 
WA_KALM_STR-ALDAT sy-vline 
WA_KALM_STR-BEDAT sy-vline 
WA_KALM_STR-BWDAT sy-vline 
WA_KALM_STR-FEH_A_ANZ sy-vline 
WA_KALM_STR-FEH_K_ANZ sy-vline 
WA_KALM_STR-FEH_STATUS sy-vline 
WA_KALM_STR-FEH_STATUF sy-vline 
WA_KALM_STR-DISPO sy-vline 
WA_KALM_STR-EKGRP sy-vline 
WA_KALM_STR-LABOR sy-vline 
WA_KALM_STR-VAGRP sy-vline 
WA_KALM_STR-SOBSL sy-vline 
WA_KALM_STR-SOBES sy-vline 
WA_KALM_STR-SOWRK sy-vline 
WA_KALM_STR-SODUM sy-vline 
WA_KALM_STR-SBDKZ sy-vline 
WA_KALM_STR-BESKZ sy-vline 
WA_KALM_STR-KOSGR sy-vline 
WA_KALM_STR-ZSCHL sy-vline 
WA_KALM_STR-CUOBJ sy-vline 
WA_KALM_STR-CUOBJID sy-vline 
WA_KALM_STR-TYPE sy-vline 
WA_KALM_STR-WRKLT sy-vline 
WA_KALM_STR-PROZESS sy-vline 
WA_KALM_STR-KZKUP sy-vline 
WA_KALM_STR-FXPRU sy-vline 
WA_KALM_STR-PR_LOSGR sy-vline 
WA_KALM_STR-PR_SUMLO sy-vline 
WA_KALM_STR-PR_LOSAU sy-vline 
WA_KALM_STR-PR_MEINS sy-vline 
WA_KALM_STR-PR_VERID sy-vline 
WA_KALM_STR-MLMAA sy-vline 
WA_KALM_STR-ERFNM sy-vline 
WA_KALM_STR-ROHSTOFF sy-vline 
WA_KALM_STR-PRCTR sy-vline 
WA_KALM_STR-SEGUNIT sy-vline 
WA_KALM_STR-SPART sy-vline 
WA_KALM_STR-MTART sy-vline 
WA_KALM_STR-BALTKZ sy-vline 
WA_KALM_STR-KALNR_BA sy-vline 
WA_KALM_STR-MKALK sy-vline 
WA_KALM_STR-BTYP sy-vline 
WA_KALM_STR-BVC_SOBSL_USE sy-vline 
WA_KALM_STR-SGT_COVS sy-vline 
WA_KALM_STR-SGT_SCAT sy-vline 
WA_KALM_STR-/CWM/XCWMAT sy-vline 
WA_KALM_STR-/CWM/LOSGR_BAS sy-vline 
WA_KALM_STR-/CWM/MEINH_BAS sy-vline 
WA_KALM_STR-/CWM/LOSGR_BEW sy-vline 
WA_KALM_STR-/CWM/MEINH_BEW sy-vline 
WA_KALM_STR-/CWM/PRLOSGR_BAS sy-vline 
WA_KALM_STR-/CWM/PRMEINH_BAS sy-vline 
WA_KALM_STR-/CWM/PRLOSGR_BEW sy-vline 
WA_KALM_STR-/CWM/PRMEINH_BEW sy-vline 
WA_KALM_STR-IPPE_COSTING sy-vline 
WA_KALM_STR-CMPEXT_NONCOL sy-vline 
WA_KALM_STR-CCODE sy-vline 
WA_KALM_STR-NONCOL_VERID sy-vline      INTO ld_text SEPARATED BY SPACE.

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