ABAP Select data from SAP table RN2GL_TM_SCHEDULE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2GL_TM_SCHEDULE 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 RN2GL_TM_SCHEDULE. 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 RN2GL_TM_SCHEDULE 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_RN2GL_TM_SCHEDULE TYPE STANDARD TABLE OF RN2GL_TM_SCHEDULE,
      WA_RN2GL_TM_SCHEDULE TYPE RN2GL_TM_SCHEDULE,
      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: <RN2GL_TM_SCHEDULE> TYPE RN2GL_TM_SCHEDULE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2GL_TM_SCHEDULE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2GL_TM_SCHEDULE
  INTO TABLE IT_RN2GL_TM_SCHEDULE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2GL_TM_SCHEDULE
*  INTO TABLE @DATA(IT_RN2GL_TM_SCHEDULE2).
*--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_RN2GL_TM_SCHEDULE INDEX 1 INTO DATA(WA_RN2GL_TM_SCHEDULE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2GL_TM_SCHEDULE ASSIGNING <RN2GL_TM_SCHEDULE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2GL_TM_SCHEDULE>-MANDT = 1.
<RN2GL_TM_SCHEDULE>-SCHEDULE_ID = 1.
<RN2GL_TM_SCHEDULE>-EINRI = 1.
<RN2GL_TM_SCHEDULE>-PATNR = 1.
<RN2GL_TM_SCHEDULE>-TM_TITLE = 1.

ENDLOOP.

LOOP AT IT_RN2GL_TM_SCHEDULE INTO WA_RN2GL_TM_SCHEDULE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2GL_TM_SCHEDULE-TM_STATE, sy-vline,
  WA_RN2GL_TM_SCHEDULE-TM_DONE_STATE, sy-vline,
  WA_RN2GL_TM_SCHEDULE-STATE_MED_USE, sy-vline,
  WA_RN2GL_TM_SCHEDULE-GL_ID, sy-vline,
  WA_RN2GL_TM_SCHEDULE-SHORT_CODE, sy-vline,
  WA_RN2GL_TM_SCHEDULE-VERSION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2GL_TM_SCHEDULE 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_RN2GL_TM_SCHEDULE 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_RN2GL_TM_SCHEDULE INTO WA_RN2GL_TM_SCHEDULE.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VDOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-VDOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-VDOC_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASSIGN_FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-ASSIGN_FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-ASSIGN_FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASSIGN_EMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-ASSIGN_EMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-ASSIGN_EMR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CANCEL_EMR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-CANCEL_EMR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-CANCEL_EMR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASSIGN_ORGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2GL_TM_SCHEDULE-ASSIGN_ORGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2GL_TM_SCHEDULE-ASSIGN_ORGID.
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_RN2GL_TM_SCHEDULE_STR, 
MANDT TYPE STRING,
SCHEDULE_ID TYPE STRING,
EINRI TYPE STRING,
PATNR TYPE STRING,
TM_TITLE TYPE STRING,
TM_STATE TYPE STRING,
TM_DONE_STATE TYPE STRING,
STATE_MED_USE TYPE STRING,
GL_ID TYPE STRING,
SHORT_CODE TYPE STRING,
VERSION TYPE STRING,
GL_VERSION_ID TYPE STRING,
NEXT_TODO_DATE TYPE STRING,
NEXT_TODO_TIME TYPE STRING,
TIMEUNIT TYPE STRING,
PATH_IN_PAUSE TYPE STRING,
VDOC_ID TYPE STRING,
ASSIGN_FALNR TYPE STRING,
ASSIGN_DATE TYPE STRING,
ASSIGN_TIME TYPE STRING,
ASSIGN_EMR TYPE STRING,
STARTDATE TYPE STRING,
STARTTIME TYPE STRING,
PLAN_ENDDATE TYPE STRING,
PLAN_ENDTIME TYPE STRING,
NEW_PLAN_ENDDATE TYPE STRING,
NEW_PLAN_ENDTIME TYPE STRING,
ENDDATE TYPE STRING,
ENDTIME TYPE STRING,
CANCEL_EMR TYPE STRING,
RECALCULATED TYPE STRING,
POSTPONED TYPE STRING,
URL_ID TYPE STRING,
LAST_CHANGE TYPE STRING,
SEARCH_STRATEGY TYPE STRING,
ASSIGN_ORGID TYPE STRING,
PATHWAYS_VERSION TYPE STRING,
ASSIGN_YEAR TYPE STRING,
ASSIGN_MONTH TYPE STRING,
DUR_PLANNED TYPE STRING,
DUR_START2END TYPE STRING,
INSDATE TYPE STRING,
INSUSER TYPE STRING,
UPDDATE TYPE STRING,
UPDUSER TYPE STRING,
DELDATE TYPE STRING,
DELUSER TYPE STRING,
DELFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2GL_TM_SCHEDULE_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_RN2GL_TM_SCHEDULE_STR-MANDT sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-SCHEDULE_ID sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-EINRI sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-PATNR sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-TM_TITLE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-TM_STATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-TM_DONE_STATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-STATE_MED_USE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-GL_ID sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-SHORT_CODE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-VERSION sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-GL_VERSION_ID sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-NEXT_TODO_DATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-NEXT_TODO_TIME sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-TIMEUNIT sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-PATH_IN_PAUSE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-VDOC_ID sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_FALNR sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_DATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_TIME sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_EMR sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-STARTDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-STARTTIME sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-PLAN_ENDDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-PLAN_ENDTIME sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-NEW_PLAN_ENDDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-NEW_PLAN_ENDTIME sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ENDDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ENDTIME sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-CANCEL_EMR sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-RECALCULATED sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-POSTPONED sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-URL_ID sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-LAST_CHANGE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-SEARCH_STRATEGY sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_ORGID sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-PATHWAYS_VERSION sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_YEAR sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-ASSIGN_MONTH sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-DUR_PLANNED sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-DUR_START2END sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-INSDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-INSUSER sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-UPDDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-UPDUSER sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-DELDATE sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-DELUSER sy-vline 
WA_RN2GL_TM_SCHEDULE_STR-DELFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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