ABAP Select data from SAP table CGMBDGTLINKTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CGMBDGTLINKTP
*  INTO TABLE @DATA(IT_CGMBDGTLINKTP2).
*--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_CGMBDGTLINKTP INDEX 1 INTO DATA(WA_CGMBDGTLINKTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CGMBDGTLINKTP>-MANDT = 1.
<CGMBDGTLINKTP>-GRANTID = 1.
<CGMBDGTLINKTP>-GRANTEEMGMTBDGTPHASE = 1.
<CGMBDGTLINKTP>-GRANTEEMGMTBUDGETSTATUS = 1.
<CGMBDGTLINKTP>-GTEEMBUDGETVALIDITYNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CGMBDGTLINKTP-GRANTEEMGMTBDGTPHASEFOREDIT, sy-vline,
  WA_CGMBDGTLINKTP-GRANTEEMGMTBUDGETSTATUSFOREDIT, sy-vline,
  WA_CGMBDGTLINKTP-VALIDITYSTARTDATE, sy-vline,
  WA_CGMBDGTLINKTP-VALIDITYENDDATE, sy-vline,
  WA_CGMBDGTLINKTP-SPONSORFISCALYEAR, sy-vline,
  WA_CGMBDGTLINKTP-GRANTEEFISCALYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CGMBDGTLINKTP 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_CGMBDGTLINKTP 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_CGMBDGTLINKTP INTO WA_CGMBDGTLINKTP.


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

*Conversion exit GJAHR, internal->external for field SPONSORFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CGMBDGTLINKTP-SPONSORFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGMBDGTLINKTP-SPONSORFISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GRANTEEFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CGMBDGTLINKTP-GRANTEEFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CGMBDGTLINKTP-GRANTEEFISCALYEAR.
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_CGMBDGTLINKTP_STR, 
MANDT TYPE STRING,
GRANTID TYPE STRING,
GRANTEEMGMTBDGTPHASE TYPE STRING,
GRANTEEMGMTBUDGETSTATUS TYPE STRING,
GTEEMBUDGETVALIDITYNUMBER TYPE STRING,
GRANTEEMGMTBDGTPHASEFOREDIT TYPE STRING,
GRANTEEMGMTBUDGETSTATUSFOREDIT TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
SPONSORFISCALYEAR TYPE STRING,
GRANTEEFISCALYEAR TYPE STRING,
GTEEMBUDGETBLOCK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CGMBDGTLINKTP_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_CGMBDGTLINKTP_STR-MANDT sy-vline 
WA_CGMBDGTLINKTP_STR-GRANTID sy-vline 
WA_CGMBDGTLINKTP_STR-GRANTEEMGMTBDGTPHASE sy-vline 
WA_CGMBDGTLINKTP_STR-GRANTEEMGMTBUDGETSTATUS sy-vline 
WA_CGMBDGTLINKTP_STR-GTEEMBUDGETVALIDITYNUMBER sy-vline 
WA_CGMBDGTLINKTP_STR-GRANTEEMGMTBDGTPHASEFOREDIT sy-vline 
WA_CGMBDGTLINKTP_STR-GRANTEEMGMTBUDGETSTATUSFOREDIT sy-vline 
WA_CGMBDGTLINKTP_STR-VALIDITYSTARTDATE sy-vline 
WA_CGMBDGTLINKTP_STR-VALIDITYENDDATE sy-vline 
WA_CGMBDGTLINKTP_STR-SPONSORFISCALYEAR sy-vline 
WA_CGMBDGTLINKTP_STR-GRANTEEFISCALYEAR sy-vline 
WA_CGMBDGTLINKTP_STR-GTEEMBUDGETBLOCK sy-vline      INTO ld_text SEPARATED BY SPACE.

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