ABAP Select data from SAP table /SCMTMS/C_GMCRLC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCMTMS/C_GMCRLC 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 /SCMTMS/C_GMCRLC. 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 /SCMTMS/C_GMCRLC 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_/SCMTMS/C_GMCRLC TYPE STANDARD TABLE OF /SCMTMS/C_GMCRLC,
      WA_/SCMTMS/C_GMCRLC TYPE /SCMTMS/C_GMCRLC,
      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: </SCMTMS/C_GMCRLC> TYPE /SCMTMS/C_GMCRLC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCMTMS/C_GMCRLC
  INTO TABLE IT_/SCMTMS/C_GMCRLC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMTMS/C_GMCRLC
*  INTO TABLE @DATA(IT_/SCMTMS/C_GMCRLC2).
*--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_/SCMTMS/C_GMCRLC INDEX 1 INTO DATA(WA_/SCMTMS/C_GMCRLC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCMTMS/C_GMCRLC ASSIGNING </SCMTMS/C_GMCRLC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMTMS/C_GMCRLC>-MANDT = 1.
</SCMTMS/C_GMCRLC>-LINK_CONFIG_ID = 1.
</SCMTMS/C_GMCRLC>-FILL_COLOR = 1.
</SCMTMS/C_GMCRLC>-FILL_COLOR_HIGHLIGHTED = 1.
</SCMTMS/C_GMCRLC>-FILL_COLOR_SELECTED = 1.

ENDLOOP.

LOOP AT IT_/SCMTMS/C_GMCRLC INTO WA_/SCMTMS/C_GMCRLC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMTMS/C_GMCRLC-FILL_COLOR_MULTI, sy-vline,
  WA_/SCMTMS/C_GMCRLC-BORDER_COLOR, sy-vline,
  WA_/SCMTMS/C_GMCRLC-BORDER_COLOR_HIGHLIGHTED, sy-vline,
  WA_/SCMTMS/C_GMCRLC-BORDER_COLOR_SELECTED, sy-vline,
  WA_/SCMTMS/C_GMCRLC-BORDER_COLOR_MULTI, sy-vline,
  WA_/SCMTMS/C_GMCRLC-LINK_WIDTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMTMS/C_GMCRLC 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_/SCMTMS/C_GMCRLC 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_/SCMTMS/C_GMCRLC INTO WA_/SCMTMS/C_GMCRLC.


*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 TSTLC, internal->external for field CREATED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/C_GMCRLC-CREATED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/C_GMCRLC-CREATED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCMTMS/C_GMCRLC-CHANGED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCMTMS/C_GMCRLC-CHANGED_ON.
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_/SCMTMS/C_GMCRLC_STR, 
MANDT TYPE STRING,
LINK_CONFIG_ID TYPE STRING,
FILL_COLOR TYPE STRING,
FILL_COLOR_HIGHLIGHTED TYPE STRING,
FILL_COLOR_SELECTED TYPE STRING,
FILL_COLOR_MULTI TYPE STRING,
BORDER_COLOR TYPE STRING,
BORDER_COLOR_HIGHLIGHTED TYPE STRING,
BORDER_COLOR_SELECTED TYPE STRING,
BORDER_COLOR_MULTI TYPE STRING,
LINK_WIDTH TYPE STRING,
DOT_WIDTH TYPE STRING,
DOT_COLOR TYPE STRING,
GEOROUTE_AVAILABLE TYPE STRING,
SHOW_GEOROUTE_DEFAULT TYPE STRING,
FLYTO_ON_GEOROUTE TYPE STRING,
HIGHLIGHT_ON_GEOROUTE TYPE STRING,
DISPLAY_LINK TYPE STRING,
DISPLAY_LINK_START_STOP TYPE STRING,
DISPLAY_LINK_DESTINATION_STOP TYPE STRING,
DISPLAY_INTERMEDIATE_STOPS TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMTMS/C_GMCRLC_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_/SCMTMS/C_GMCRLC_STR-MANDT sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-LINK_CONFIG_ID sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-FILL_COLOR sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-FILL_COLOR_HIGHLIGHTED sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-FILL_COLOR_SELECTED sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-FILL_COLOR_MULTI sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-BORDER_COLOR sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-BORDER_COLOR_HIGHLIGHTED sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-BORDER_COLOR_SELECTED sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-BORDER_COLOR_MULTI sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-LINK_WIDTH sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-DOT_WIDTH sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-DOT_COLOR sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-GEOROUTE_AVAILABLE sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-SHOW_GEOROUTE_DEFAULT sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-FLYTO_ON_GEOROUTE sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-HIGHLIGHT_ON_GEOROUTE sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-DISPLAY_LINK sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-DISPLAY_LINK_START_STOP sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-DISPLAY_LINK_DESTINATION_STOP sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-DISPLAY_INTERMEDIATE_STOPS sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-CREATED_BY sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-CREATED_ON sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-CHANGED_BY sy-vline 
WA_/SCMTMS/C_GMCRLC_STR-CHANGED_ON sy-vline      INTO ld_text SEPARATED BY SPACE.

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