ABAP Select data from SAP table CATSHRLST 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 CATSHRLST 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 CATSHRLST. 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 CATSHRLST 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_CATSHRLST TYPE STANDARD TABLE OF CATSHRLST,
      WA_CATSHRLST TYPE CATSHRLST,
      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: <CATSHRLST> TYPE CATSHRLST.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATSHRLST
*  INTO TABLE @DATA(IT_CATSHRLST2).
*--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_CATSHRLST INDEX 1 INTO DATA(WA_CATSHRLST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATSHRLST>-MANDT = 1.
<CATSHRLST>-COUNTER = 1.
<CATSHRLST>-STOKZ = 1.
<CATSHRLST>-PERNR = 1.
<CATSHRLST>-WORKDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATSHRLST-UNAME1, sy-vline,
  WA_CATSHRLST-DATUM1, sy-vline,
  WA_CATSHRLST-UZEIT1, sy-vline,
  WA_CATSHRLST-PGMID1, sy-vline,
  WA_CATSHRLST-UNAME2, sy-vline,
  WA_CATSHRLST-DATUM2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATSHRLST 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_CATSHRLST 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_CATSHRLST INTO WA_CATSHRLST.


*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_CATSHRLST-SKOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSHRLST-SKOSTL.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ABPSN, internal->external for field RPROJEXT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CATSHRLST-RPROJEXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSHRLST-RPROJEXT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TASKCOUNTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CATSHRLST-TASKCOUNTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATSHRLST-TASKCOUNTER.
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_CATSHRLST_STR, 
MANDT TYPE STRING,
COUNTER TYPE STRING,
STOKZ TYPE STRING,
PERNR TYPE STRING,
WORKDATE TYPE STRING,
UNAME1 TYPE STRING,
DATUM1 TYPE STRING,
UZEIT1 TYPE STRING,
PGMID1 TYPE STRING,
UNAME2 TYPE STRING,
DATUM2 TYPE STRING,
UZEIT2 TYPE STRING,
PGMID2 TYPE STRING,
STATU2 TYPE STRING,
UNAME3 TYPE STRING,
DATUM3 TYPE STRING,
UZEIT3 TYPE STRING,
PGMID3 TYPE STRING,
STATU3 TYPE STRING,
UNAME4 TYPE STRING,
DATUM4 TYPE STRING,
UZEIT4 TYPE STRING,
PGMID4 TYPE STRING,
SKOSTL TYPE STRING,
LSTAR TYPE STRING,
SEBELN TYPE STRING,
SEBELP TYPE STRING,
LSTNR TYPE STRING,
SPRZNR TYPE STRING,
RKOSTL TYPE STRING,
RPROJEXT TYPE STRING,
RAUFNR TYPE STRING,
RNPLNR TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
RKDAUF TYPE STRING,
RKDPOS TYPE STRING,
RKSTR TYPE STRING,
RPRZNR TYPE STRING,
AWART TYPE STRING,
LGART TYPE STRING,
REINR TYPE STRING,
VERSL 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,
ERSDA TYPE STRING,
ERSTM TYPE STRING,
ERNAM TYPE STRING,
LAEDA TYPE STRING,
LAETM TYPE STRING,
AENAM TYPE STRING,
APNAM TYPE STRING,
APDAT TYPE STRING,
WORKITEMID TYPE STRING,
LOGSYS TYPE STRING,
STATUS TYPE STRING,
REFCOUNTER TYPE STRING,
REASON TYPE STRING,
BELNR TYPE STRING,
EXTSYSTEM TYPE STRING,
EXTAPPLICATION TYPE STRING,
EXTDOCUMENTNO TYPE STRING,
TASKCOUNTER TYPE STRING,
CATSHOURS TYPE STRING,
BEGUZ TYPE STRING,
ENDUZ TYPE STRING,
VTKEN TYPE STRING,
ALLDF TYPE STRING,
LTXA1 TYPE STRING,
LIGHTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATSHRLST_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_CATSHRLST_STR-MANDT sy-vline 
WA_CATSHRLST_STR-COUNTER sy-vline 
WA_CATSHRLST_STR-STOKZ sy-vline 
WA_CATSHRLST_STR-PERNR sy-vline 
WA_CATSHRLST_STR-WORKDATE sy-vline 
WA_CATSHRLST_STR-UNAME1 sy-vline 
WA_CATSHRLST_STR-DATUM1 sy-vline 
WA_CATSHRLST_STR-UZEIT1 sy-vline 
WA_CATSHRLST_STR-PGMID1 sy-vline 
WA_CATSHRLST_STR-UNAME2 sy-vline 
WA_CATSHRLST_STR-DATUM2 sy-vline 
WA_CATSHRLST_STR-UZEIT2 sy-vline 
WA_CATSHRLST_STR-PGMID2 sy-vline 
WA_CATSHRLST_STR-STATU2 sy-vline 
WA_CATSHRLST_STR-UNAME3 sy-vline 
WA_CATSHRLST_STR-DATUM3 sy-vline 
WA_CATSHRLST_STR-UZEIT3 sy-vline 
WA_CATSHRLST_STR-PGMID3 sy-vline 
WA_CATSHRLST_STR-STATU3 sy-vline 
WA_CATSHRLST_STR-UNAME4 sy-vline 
WA_CATSHRLST_STR-DATUM4 sy-vline 
WA_CATSHRLST_STR-UZEIT4 sy-vline 
WA_CATSHRLST_STR-PGMID4 sy-vline 
WA_CATSHRLST_STR-SKOSTL sy-vline 
WA_CATSHRLST_STR-LSTAR sy-vline 
WA_CATSHRLST_STR-SEBELN sy-vline 
WA_CATSHRLST_STR-SEBELP sy-vline 
WA_CATSHRLST_STR-LSTNR sy-vline 
WA_CATSHRLST_STR-SPRZNR sy-vline 
WA_CATSHRLST_STR-RKOSTL sy-vline 
WA_CATSHRLST_STR-RPROJEXT sy-vline 
WA_CATSHRLST_STR-RAUFNR sy-vline 
WA_CATSHRLST_STR-RNPLNR sy-vline 
WA_CATSHRLST_STR-VORNR sy-vline 
WA_CATSHRLST_STR-UVORN sy-vline 
WA_CATSHRLST_STR-RKDAUF sy-vline 
WA_CATSHRLST_STR-RKDPOS sy-vline 
WA_CATSHRLST_STR-RKSTR sy-vline 
WA_CATSHRLST_STR-RPRZNR sy-vline 
WA_CATSHRLST_STR-AWART sy-vline 
WA_CATSHRLST_STR-LGART sy-vline 
WA_CATSHRLST_STR-REINR sy-vline 
WA_CATSHRLST_STR-VERSL sy-vline 
WA_CATSHRLST_STR-BWGRL sy-vline 
WA_CATSHRLST_STR-WAERS sy-vline 
WA_CATSHRLST_STR-AUFKZ sy-vline 
WA_CATSHRLST_STR-TRFGR sy-vline 
WA_CATSHRLST_STR-TRFST sy-vline 
WA_CATSHRLST_STR-PRAKN sy-vline 
WA_CATSHRLST_STR-PRAKZ sy-vline 
WA_CATSHRLST_STR-OTYPE sy-vline 
WA_CATSHRLST_STR-PLANS sy-vline 
WA_CATSHRLST_STR-KOKRS sy-vline 
WA_CATSHRLST_STR-MEINH sy-vline 
WA_CATSHRLST_STR-TCURR sy-vline 
WA_CATSHRLST_STR-PRICE sy-vline 
WA_CATSHRLST_STR-ARBID sy-vline 
WA_CATSHRLST_STR-WERKS sy-vline 
WA_CATSHRLST_STR-ERSDA sy-vline 
WA_CATSHRLST_STR-ERSTM sy-vline 
WA_CATSHRLST_STR-ERNAM sy-vline 
WA_CATSHRLST_STR-LAEDA sy-vline 
WA_CATSHRLST_STR-LAETM sy-vline 
WA_CATSHRLST_STR-AENAM sy-vline 
WA_CATSHRLST_STR-APNAM sy-vline 
WA_CATSHRLST_STR-APDAT sy-vline 
WA_CATSHRLST_STR-WORKITEMID sy-vline 
WA_CATSHRLST_STR-LOGSYS sy-vline 
WA_CATSHRLST_STR-STATUS sy-vline 
WA_CATSHRLST_STR-REFCOUNTER sy-vline 
WA_CATSHRLST_STR-REASON sy-vline 
WA_CATSHRLST_STR-BELNR sy-vline 
WA_CATSHRLST_STR-EXTSYSTEM sy-vline 
WA_CATSHRLST_STR-EXTAPPLICATION sy-vline 
WA_CATSHRLST_STR-EXTDOCUMENTNO sy-vline 
WA_CATSHRLST_STR-TASKCOUNTER sy-vline 
WA_CATSHRLST_STR-CATSHOURS sy-vline 
WA_CATSHRLST_STR-BEGUZ sy-vline 
WA_CATSHRLST_STR-ENDUZ sy-vline 
WA_CATSHRLST_STR-VTKEN sy-vline 
WA_CATSHRLST_STR-ALLDF sy-vline 
WA_CATSHRLST_STR-LTXA1 sy-vline 
WA_CATSHRLST_STR-LIGHTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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