ABAP Select data from SAP table GTRT_CRM_PSM_PROXY_EF_DOC_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GTRT_CRM_PSM_PROXY_EF_DOC_I
*  INTO TABLE @DATA(IT_GTRT_CRM_PSM_PROXY_EF_DOC_I2).
*--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_GTRT_CRM_PSM_PROXY_EF_DOC_I INDEX 1 INTO DATA(WA_GTRT_CRM_PSM_PROXY_EF_DOC_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GTRT_CRM_PSM_PROXY_EF_DOC_I>-OBJKEY = 1.
<GTRT_CRM_PSM_PROXY_EF_DOC_I>-OBJTYPE = 1.
<GTRT_CRM_PSM_PROXY_EF_DOC_I>-LOGSYS = 1.
<GTRT_CRM_PSM_PROXY_EF_DOC_I>-NUMBER_INT = 1.
<GTRT_CRM_PSM_PROXY_EF_DOC_I>-NUMBER_EXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-HEADER_GUID, sy-vline,
  WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-PREDECESSOR_GUID, sy-vline,
  WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-ITM_TYPE, sy-vline,
  WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-ITEM_DUE_DATE, sy-vline,
  WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-ITEM_AMOUNT, sy-vline,
  WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-ITEM_DESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GTRT_CRM_PSM_PROXY_EF_DOC_I 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_GTRT_CRM_PSM_PROXY_EF_DOC_I 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_GTRT_CRM_PSM_PROXY_EF_DOC_I INTO WA_GTRT_CRM_PSM_PROXY_EF_DOC_I.


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

*Conversion exit ISOLA, internal->external for field ITEM_DESCRIPTION_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-ITEM_DESCRIPTION_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTRT_CRM_PSM_PROXY_EF_DOC_I-ITEM_DESCRIPTION_LANGU.
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_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR, 
OBJKEY TYPE STRING,
OBJTYPE TYPE STRING,
LOGSYS TYPE STRING,
NUMBER_INT TYPE STRING,
NUMBER_EXT TYPE STRING,
HEADER_GUID TYPE STRING,
PREDECESSOR_GUID TYPE STRING,
ITM_TYPE TYPE STRING,
ITEM_DUE_DATE TYPE STRING,
ITEM_AMOUNT TYPE STRING,
ITEM_DESCRIPTION TYPE STRING,
ITEM_DESCRIPTION_LANGU TYPE STRING,
CRM_APPR TYPE STRING,
CRM_PROC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_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_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-OBJKEY sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-OBJTYPE sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-LOGSYS sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-NUMBER_INT sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-NUMBER_EXT sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-HEADER_GUID sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-PREDECESSOR_GUID sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-ITM_TYPE sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-ITEM_DUE_DATE sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-ITEM_AMOUNT sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-ITEM_DESCRIPTION sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-ITEM_DESCRIPTION_LANGU sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-CRM_APPR sy-vline 
WA_GTRT_CRM_PSM_PROXY_EF_DOC_I_STR-CRM_PROC sy-vline      INTO ld_text SEPARATED BY SPACE.

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