ABAP Select data from SAP table CRMT_GRM_BTX_DOC_FLOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_GRM_BTX_DOC_FLOW
*  INTO TABLE @DATA(IT_CRMT_GRM_BTX_DOC_FLOW2).
*--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_CRMT_GRM_BTX_DOC_FLOW INDEX 1 INTO DATA(WA_CRMT_GRM_BTX_DOC_FLOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_GRM_BTX_DOC_FLOW>-REL_TYPE = 1.
<CRMT_GRM_BTX_DOC_FLOW>-REF_OBJ_ROLETYPE = 1.
<CRMT_GRM_BTX_DOC_FLOW>-REF_OBJ_ROLETYPMOD = 1.
<CRMT_GRM_BTX_DOC_FLOW>-ROLETYPE = 1.
<CRMT_GRM_BTX_DOC_FLOW>-LANGU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_GRM_BTX_DOC_FLOW-DESCRP, sy-vline,
  WA_CRMT_GRM_BTX_DOC_FLOW-REF_OBJ_OBJKEY, sy-vline,
  WA_CRMT_GRM_BTX_DOC_FLOW-REF_OBJ_TYPE, sy-vline,
  WA_CRMT_GRM_BTX_DOC_FLOW-REF_OBJ_NO, sy-vline,
  WA_CRMT_GRM_BTX_DOC_FLOW-REF_ITEM_NO, sy-vline,
  WA_CRMT_GRM_BTX_DOC_FLOW-REF_LOG_SYSTEM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_GRM_BTX_DOC_FLOW 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_CRMT_GRM_BTX_DOC_FLOW 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_CRMT_GRM_BTX_DOC_FLOW INTO WA_CRMT_GRM_BTX_DOC_FLOW.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_GRM_BTX_DOC_FLOW-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_GRM_BTX_DOC_FLOW-LANGU.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit TSTPS, internal->external for field REL_DATE_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_GRM_BTX_DOC_FLOW-REL_DATE_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_GRM_BTX_DOC_FLOW-REL_DATE_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field REL_DATE_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_GRM_BTX_DOC_FLOW-REL_DATE_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_GRM_BTX_DOC_FLOW-REL_DATE_TO.
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_CRMT_GRM_BTX_DOC_FLOW_STR, 
REL_TYPE TYPE STRING,
REF_OBJ_ROLETYPE TYPE STRING,
REF_OBJ_ROLETYPMOD TYPE STRING,
ROLETYPE TYPE STRING,
LANGU TYPE STRING,
DESCRP TYPE STRING,
REF_OBJ_OBJKEY TYPE STRING,
REF_OBJ_TYPE TYPE STRING,
REF_OBJ_NO TYPE STRING,
REF_ITEM_NO TYPE STRING,
REF_LOG_SYSTEM TYPE STRING,
REF_DESCRIPTION TYPE STRING,
REL_VALUE TYPE STRING,
REL_CURRENCY TYPE STRING,
REL_DATE_FROM TYPE STRING,
REL_DATE_TO TYPE STRING,
REL_INVALID TYPE STRING,
REL_DOC_INFO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_GRM_BTX_DOC_FLOW_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_CRMT_GRM_BTX_DOC_FLOW_STR-REL_TYPE sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_OBJ_ROLETYPE sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_OBJ_ROLETYPMOD sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-ROLETYPE sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-LANGU sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-DESCRP sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_OBJ_OBJKEY sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_OBJ_TYPE sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_OBJ_NO sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_ITEM_NO sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_LOG_SYSTEM sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REF_DESCRIPTION sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REL_VALUE sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REL_CURRENCY sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REL_DATE_FROM sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REL_DATE_TO sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REL_INVALID sy-vline 
WA_CRMT_GRM_BTX_DOC_FLOW_STR-REL_DOC_INFO sy-vline      INTO ld_text SEPARATED BY SPACE.

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