ABAP Select data from SAP table CTRDDOCITMLCASN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CTRDDOCITMLCASN
*  INTO TABLE @DATA(IT_CTRDDOCITMLCASN2).
*--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_CTRDDOCITMLCASN INDEX 1 INTO DATA(WA_CTRDDOCITMLCASN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CTRDDOCITMLCASN>-MANDT = 1.
<CTRDDOCITMLCASN>-TRDCMPLNCDOCITEMUUID = 1.
<CTRDDOCITMLCASN>-TRDCMPLNCLICENSEUUID = 1.
<CTRDDOCITMLCASN>-REFERENCEDOCUMENTCATEGORY = 1.
<CTRDDOCITMLCASN>-REFERENCEDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CTRDDOCITMLCASN-REFERENCEDOCUMENTITEM, sy-vline,
  WA_CTRDDOCITMLCASN-COMPANYCODE, sy-vline,
  WA_CTRDDOCITMLCASN-LEGALREGULATION, sy-vline,
  WA_CTRDDOCITMLCASN-TRDCMPLNCLICENSETYPE, sy-vline,
  WA_CTRDDOCITMLCASN-TRDCMPLNCLICENSEOWNER, sy-vline,
  WA_CTRDDOCITMLCASN-TRDCMPLNCLICENSECATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CTRDDOCITMLCASN 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_CTRDDOCITMLCASN 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_CTRDDOCITMLCASN INTO WA_CTRDDOCITMLCASN.


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

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

*Conversion exit ALPHA, internal->external for field TRDCMPLNCLICENSE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CTRDDOCITMLCASN-TRDCMPLNCLICENSE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTRDDOCITMLCASN-TRDCMPLNCLICENSE.
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_CTRDDOCITMLCASN_STR, 
MANDT TYPE STRING,
TRDCMPLNCDOCITEMUUID TYPE STRING,
TRDCMPLNCLICENSEUUID TYPE STRING,
REFERENCEDOCUMENTCATEGORY TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
REFERENCEDOCUMENTITEM TYPE STRING,
COMPANYCODE TYPE STRING,
LEGALREGULATION TYPE STRING,
TRDCMPLNCLICENSETYPE TYPE STRING,
TRDCMPLNCLICENSEOWNER TYPE STRING,
TRDCMPLNCLICENSECATEGORY TYPE STRING,
TRDCMPLNCLICENSE TYPE STRING,
EXTTRDCMPLNCLICENSE TYPE STRING,
TRDCMPLNCLICENSEREMARK TYPE STRING,
TRDCMPLNCLICENSESTATUS TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CTRDDOCITMLCASN_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_CTRDDOCITMLCASN_STR-MANDT sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCDOCITEMUUID sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSEUUID sy-vline 
WA_CTRDDOCITMLCASN_STR-REFERENCEDOCUMENTCATEGORY sy-vline 
WA_CTRDDOCITMLCASN_STR-REFERENCEDOCUMENT sy-vline 
WA_CTRDDOCITMLCASN_STR-REFERENCEDOCUMENTITEM sy-vline 
WA_CTRDDOCITMLCASN_STR-COMPANYCODE sy-vline 
WA_CTRDDOCITMLCASN_STR-LEGALREGULATION sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSETYPE sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSEOWNER sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSECATEGORY sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSE sy-vline 
WA_CTRDDOCITMLCASN_STR-EXTTRDCMPLNCLICENSE sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSEREMARK sy-vline 
WA_CTRDDOCITMLCASN_STR-TRDCMPLNCLICENSESTATUS sy-vline 
WA_CTRDDOCITMLCASN_STR-VALIDITYSTARTDATE sy-vline 
WA_CTRDDOCITMLCASN_STR-VALIDITYENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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