ABAP Select data from SAP table CATS_COMM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATS_COMM
*  INTO TABLE @DATA(IT_CATS_COMM2).
*--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_CATS_COMM INDEX 1 INTO DATA(WA_CATS_COMM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATS_COMM>-WORKDATE = 1.
<CATS_COMM>-PERNR = 1.
<CATS_COMM>-SKOSTL = 1.
<CATS_COMM>-LSTAR = 1.
<CATS_COMM>-SEBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATS_COMM-SEBELP, sy-vline,
  WA_CATS_COMM-SPRZNR, sy-vline,
  WA_CATS_COMM-LSTNR, sy-vline,
  WA_CATS_COMM-RKOSTL, sy-vline,
  WA_CATS_COMM-RPROJ, sy-vline,
  WA_CATS_COMM-RAUFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATS_COMM 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_CATS_COMM 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_CATS_COMM INTO WA_CATS_COMM.


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CATS_COMM-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_COMM-POSID.
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_CATS_COMM_STR, 
WORKDATE TYPE STRING,
PERNR TYPE STRING,
SKOSTL TYPE STRING,
LSTAR TYPE STRING,
SEBELN TYPE STRING,
SEBELP TYPE STRING,
SPRZNR TYPE STRING,
LSTNR TYPE STRING,
RKOSTL TYPE STRING,
RPROJ TYPE STRING,
RAUFNR TYPE STRING,
RNPLNR TYPE STRING,
RAUFPL TYPE STRING,
RAPLZL TYPE STRING,
RKDAUF TYPE STRING,
RKDPOS TYPE STRING,
RKSTR TYPE STRING,
RPRZNR TYPE STRING,
PAOBJNR TYPE STRING,
FUND TYPE STRING,
FUNC_AREA TYPE STRING,
GRANT_NBR TYPE STRING,
S_FUND TYPE STRING,
S_FUNC_AREA TYPE STRING,
S_GRANT_NBR TYPE STRING,
BUDGET_PD TYPE STRING,
SBUDGET_PD TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,
OVERTIMECAT TYPE STRING,
WORK_ITEM_ID TYPE STRING,
AWART TYPE STRING,
LGART TYPE STRING,
KAPID TYPE STRING,
SPLIT TYPE STRING,
REINR TYPE STRING,
WABLNR TYPE STRING,
VERSL TYPE STRING,
WTART TYPE STRING,
BWGRL TYPE STRING,
WAERS TYPE STRING,
AUFKZ TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
OTYPE TYPE STRING,
PLANS TYPE STRING,
KOKRS TYPE STRING,
MEINH TYPE STRING,
TCURR TYPE STRING,
PRICE TYPE STRING,
ARBID TYPE STRING,
WERKS TYPE STRING,
AUTYP TYPE STRING,
HRCOSTASG TYPE STRING,
HRKOSTL TYPE STRING,
HRLSTAR TYPE STRING,
HRFUND TYPE STRING,
HRFUNC_AREA TYPE STRING,
HRGRANT_NBR TYPE STRING,
BEMOT TYPE STRING,
UNIT TYPE STRING,
STATKEYFIG TYPE STRING,
TASKTYPE TYPE STRING,
TASKLEVEL TYPE STRING,
TASKCOMPONENT TYPE STRING,
BUKRS TYPE STRING,
CPR_GUID TYPE STRING,
CPR_EXTID TYPE STRING,
CPR_OBJGUID TYPE STRING,
CPR_OBJGEXTID TYPE STRING,
CPR_OBJTYPE TYPE STRING,
HRBUDGET_PD TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
BEDID TYPE STRING,
KAPAR TYPE STRING,
ARBPL TYPE STRING,
POSID TYPE STRING,
DUMMY_INCL_EEW_PRS_CPILS TYPE STRING,
CATSHOURS TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
VTKEN TYPE STRING,
ALLDF TYPE STRING,
OFMNW TYPE STRING,
PEDD TYPE STRING,
AUERU TYPE STRING,
LTXA1 TYPE STRING,
LONGTEXT TYPE STRING,
ERUZU TYPE STRING,
CATSAMOUNT TYPE STRING,
CATSQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATS_COMM_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_CATS_COMM_STR-WORKDATE sy-vline 
WA_CATS_COMM_STR-PERNR sy-vline 
WA_CATS_COMM_STR-SKOSTL sy-vline 
WA_CATS_COMM_STR-LSTAR sy-vline 
WA_CATS_COMM_STR-SEBELN sy-vline 
WA_CATS_COMM_STR-SEBELP sy-vline 
WA_CATS_COMM_STR-SPRZNR sy-vline 
WA_CATS_COMM_STR-LSTNR sy-vline 
WA_CATS_COMM_STR-RKOSTL sy-vline 
WA_CATS_COMM_STR-RPROJ sy-vline 
WA_CATS_COMM_STR-RAUFNR sy-vline 
WA_CATS_COMM_STR-RNPLNR sy-vline 
WA_CATS_COMM_STR-RAUFPL sy-vline 
WA_CATS_COMM_STR-RAPLZL sy-vline 
WA_CATS_COMM_STR-RKDAUF sy-vline 
WA_CATS_COMM_STR-RKDPOS sy-vline 
WA_CATS_COMM_STR-RKSTR sy-vline 
WA_CATS_COMM_STR-RPRZNR sy-vline 
WA_CATS_COMM_STR-PAOBJNR sy-vline 
WA_CATS_COMM_STR-FUND sy-vline 
WA_CATS_COMM_STR-FUNC_AREA sy-vline 
WA_CATS_COMM_STR-GRANT_NBR sy-vline 
WA_CATS_COMM_STR-S_FUND sy-vline 
WA_CATS_COMM_STR-S_FUNC_AREA sy-vline 
WA_CATS_COMM_STR-S_GRANT_NBR sy-vline 
WA_CATS_COMM_STR-BUDGET_PD sy-vline 
WA_CATS_COMM_STR-SBUDGET_PD sy-vline 
WA_CATS_COMM_STR-SERVICE_DOC_TYPE sy-vline 
WA_CATS_COMM_STR-SERVICE_DOC_ID sy-vline 
WA_CATS_COMM_STR-SERVICE_DOC_ITEM_ID sy-vline 
WA_CATS_COMM_STR-OVERTIMECAT sy-vline 
WA_CATS_COMM_STR-WORK_ITEM_ID sy-vline 
WA_CATS_COMM_STR-AWART sy-vline 
WA_CATS_COMM_STR-LGART sy-vline 
WA_CATS_COMM_STR-KAPID sy-vline 
WA_CATS_COMM_STR-SPLIT sy-vline 
WA_CATS_COMM_STR-REINR sy-vline 
WA_CATS_COMM_STR-WABLNR sy-vline 
WA_CATS_COMM_STR-VERSL sy-vline 
WA_CATS_COMM_STR-WTART sy-vline 
WA_CATS_COMM_STR-BWGRL sy-vline 
WA_CATS_COMM_STR-WAERS sy-vline 
WA_CATS_COMM_STR-AUFKZ sy-vline 
WA_CATS_COMM_STR-TRFGR sy-vline 
WA_CATS_COMM_STR-TRFST sy-vline 
WA_CATS_COMM_STR-PRAKN sy-vline 
WA_CATS_COMM_STR-PRAKZ sy-vline 
WA_CATS_COMM_STR-OTYPE sy-vline 
WA_CATS_COMM_STR-PLANS sy-vline 
WA_CATS_COMM_STR-KOKRS sy-vline 
WA_CATS_COMM_STR-MEINH sy-vline 
WA_CATS_COMM_STR-TCURR sy-vline 
WA_CATS_COMM_STR-PRICE sy-vline 
WA_CATS_COMM_STR-ARBID sy-vline 
WA_CATS_COMM_STR-WERKS sy-vline 
WA_CATS_COMM_STR-AUTYP sy-vline 
WA_CATS_COMM_STR-HRCOSTASG sy-vline 
WA_CATS_COMM_STR-HRKOSTL sy-vline 
WA_CATS_COMM_STR-HRLSTAR sy-vline 
WA_CATS_COMM_STR-HRFUND sy-vline 
WA_CATS_COMM_STR-HRFUNC_AREA sy-vline 
WA_CATS_COMM_STR-HRGRANT_NBR sy-vline 
WA_CATS_COMM_STR-BEMOT sy-vline 
WA_CATS_COMM_STR-UNIT sy-vline 
WA_CATS_COMM_STR-STATKEYFIG sy-vline 
WA_CATS_COMM_STR-TASKTYPE sy-vline 
WA_CATS_COMM_STR-TASKLEVEL sy-vline 
WA_CATS_COMM_STR-TASKCOMPONENT sy-vline 
WA_CATS_COMM_STR-BUKRS sy-vline 
WA_CATS_COMM_STR-CPR_GUID sy-vline 
WA_CATS_COMM_STR-CPR_EXTID sy-vline 
WA_CATS_COMM_STR-CPR_OBJGUID sy-vline 
WA_CATS_COMM_STR-CPR_OBJGEXTID sy-vline 
WA_CATS_COMM_STR-CPR_OBJTYPE sy-vline 
WA_CATS_COMM_STR-HRBUDGET_PD sy-vline 
WA_CATS_COMM_STR-VORNR sy-vline 
WA_CATS_COMM_STR-UVORN sy-vline 
WA_CATS_COMM_STR-BEDID sy-vline 
WA_CATS_COMM_STR-KAPAR sy-vline 
WA_CATS_COMM_STR-ARBPL sy-vline 
WA_CATS_COMM_STR-POSID sy-vline 
WA_CATS_COMM_STR-DUMMY_INCL_EEW_PRS_CPILS sy-vline 
WA_CATS_COMM_STR-CATSHOURS sy-vline 
WA_CATS_COMM_STR-BEGUZ sy-vline 
WA_CATS_COMM_STR-ENDUZ sy-vline 
WA_CATS_COMM_STR-VTKEN sy-vline 
WA_CATS_COMM_STR-ALLDF sy-vline 
WA_CATS_COMM_STR-OFMNW sy-vline 
WA_CATS_COMM_STR-PEDD sy-vline 
WA_CATS_COMM_STR-AUERU sy-vline 
WA_CATS_COMM_STR-LTXA1 sy-vline 
WA_CATS_COMM_STR-LONGTEXT sy-vline 
WA_CATS_COMM_STR-ERUZU sy-vline 
WA_CATS_COMM_STR-CATSAMOUNT sy-vline 
WA_CATS_COMM_STR-CATSQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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