ABAP Select data from SAP table GTCN_FPM_S_REPORT_CRITERIA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GTCN_FPM_S_REPORT_CRITERIA
*  INTO TABLE @DATA(IT_GTCN_FPM_S_REPORT_CRITERIA2).
*--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_GTCN_FPM_S_REPORT_CRITERIA INDEX 1 INTO DATA(WA_GTCN_FPM_S_REPORT_CRITERIA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GTCN_FPM_S_REPORT_CRITERIA>-COMPANY_CODE = 1.
<GTCN_FPM_S_REPORT_CRITERIA>-CUST_OFFICE = 1.
<GTCN_FPM_S_REPORT_CRITERIA>-VERIF_DOC_ID = 1.
<GTCN_FPM_S_REPORT_CRITERIA>-CUST_NO = 1.
<GTCN_FPM_S_REPORT_CRITERIA>-BILL_DOC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GTCN_FPM_S_REPORT_CRITERIA-BILL_DATE, sy-vline,
  WA_GTCN_FPM_S_REPORT_CRITERIA-USER_STATUS, sy-vline,
  WA_GTCN_FPM_S_REPORT_CRITERIA-SYSTEM_STATUS, sy-vline,
  WA_GTCN_FPM_S_REPORT_CRITERIA-VKORG, sy-vline,
  WA_GTCN_FPM_S_REPORT_CRITERIA-PROCESSOR, sy-vline,
  WA_GTCN_FPM_S_REPORT_CRITERIA-VBELV_S, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GTCN_FPM_S_REPORT_CRITERIA 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_GTCN_FPM_S_REPORT_CRITERIA 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_GTCN_FPM_S_REPORT_CRITERIA INTO WA_GTCN_FPM_S_REPORT_CRITERIA.


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

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

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

*Conversion exit USTAT, internal->external for field USER_STATUS
CALL FUNCTION 'CONVERSION_EXIT_USTAT_OUTPUT'
  EXPORTING
    input =                      WA_GTCN_FPM_S_REPORT_CRITERIA-USER_STATUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTCN_FPM_S_REPORT_CRITERIA-USER_STATUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SSTAT, internal->external for field SYSTEM_STATUS
CALL FUNCTION 'CONVERSION_EXIT_SSTAT_OUTPUT'
  EXPORTING
    input =                      WA_GTCN_FPM_S_REPORT_CRITERIA-SYSTEM_STATUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTCN_FPM_S_REPORT_CRITERIA-SYSTEM_STATUS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VBELV_O
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_GTCN_FPM_S_REPORT_CRITERIA-VBELV_O
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTCN_FPM_S_REPORT_CRITERIA-VBELV_O.
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_GTCN_FPM_S_REPORT_CRITERIA_STR, 
COMPANY_CODE TYPE STRING,
CUST_OFFICE TYPE STRING,
VERIF_DOC_ID TYPE STRING,
CUST_NO TYPE STRING,
BILL_DOC TYPE STRING,
BILL_DATE TYPE STRING,
USER_STATUS TYPE STRING,
SYSTEM_STATUS TYPE STRING,
VKORG TYPE STRING,
PROCESSOR TYPE STRING,
VBELV_S TYPE STRING,
VBELV_O TYPE STRING,
ERNAM TYPE STRING,
KEY_DATE TYPE STRING,
COMPL_WRITE_OFF_ON TYPE STRING,
COMPL_REFUND_ON TYPE STRING,
COMPL_WRITE_OFF TYPE STRING,
COMPL_REFUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GTCN_FPM_S_REPORT_CRITERIA_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_GTCN_FPM_S_REPORT_CRITERIA_STR-COMPANY_CODE sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-CUST_OFFICE sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-VERIF_DOC_ID sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-CUST_NO sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-BILL_DOC sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-BILL_DATE sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-USER_STATUS sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-SYSTEM_STATUS sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-VKORG sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-PROCESSOR sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-VBELV_S sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-VBELV_O sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-ERNAM sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-KEY_DATE sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-COMPL_WRITE_OFF_ON sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-COMPL_REFUND_ON sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-COMPL_WRITE_OFF sy-vline 
WA_GTCN_FPM_S_REPORT_CRITERIA_STR-COMPL_REFUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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