ABAP Select data from SAP table RMXTS_MTP_SCHEDULE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RMXTS_MTP_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 RMXTS_MTP_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 RMXTS_MTP_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_RMXTS_MTP_SCHEDULE TYPE STANDARD TABLE OF RMXTS_MTP_SCHEDULE,
      WA_RMXTS_MTP_SCHEDULE TYPE RMXTS_MTP_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: <RMXTS_MTP_SCHEDULE> TYPE RMXTS_MTP_SCHEDULE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMXTS_MTP_SCHEDULE
*  INTO TABLE @DATA(IT_RMXTS_MTP_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_RMXTS_MTP_SCHEDULE INDEX 1 INTO DATA(WA_RMXTS_MTP_SCHEDULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMXTS_MTP_SCHEDULE>-WEEK_NO = 1.
<RMXTS_MTP_SCHEDULE>-CAL_DATE = 1.
<RMXTS_MTP_SCHEDULE>-WEEK_DAY = 1.
<RMXTS_MTP_SCHEDULE>-ICON_STAT = 1.
<RMXTS_MTP_SCHEDULE>-ICON_MAV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMXTS_MTP_SCHEDULE-LINE, sy-vline,
  WA_RMXTS_MTP_SCHEDULE-SUPER_TRIAL, sy-vline,
  WA_RMXTS_MTP_SCHEDULE-TRIALTYPE, sy-vline,
  WA_RMXTS_MTP_SCHEDULE-TRIALID, sy-vline,
  WA_RMXTS_MTP_SCHEDULE-TRIALNAME, sy-vline,
  WA_RMXTS_MTP_SCHEDULE-DAY_REQ_START, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMXTS_MTP_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_RMXTS_MTP_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_RMXTS_MTP_SCHEDULE INTO WA_RMXTS_MTP_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 SUPER_TRIAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMXTS_MTP_SCHEDULE-SUPER_TRIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXTS_MTP_SCHEDULE-SUPER_TRIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field DURA_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMXTS_MTP_SCHEDULE-DURA_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXTS_MTP_SCHEDULE-DURA_UNIT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field PROJECT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RMXTS_MTP_SCHEDULE-PROJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXTS_MTP_SCHEDULE-PROJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RMXTS_MTP_SCHEDULE-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXTS_MTP_SCHEDULE-PRODUCT.
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_RMXTS_MTP_SCHEDULE_STR, 
WEEK_NO TYPE STRING,
CAL_DATE TYPE STRING,
WEEK_DAY TYPE STRING,
ICON_STAT TYPE STRING,
ICON_MAV TYPE STRING,
LINE TYPE STRING,
SUPER_TRIAL TYPE STRING,
TRIALTYPE TYPE STRING,
TRIALID TYPE STRING,
TRIALNAME TYPE STRING,
DAY_REQ_START TYPE STRING,
DAY_REQ_END TYPE STRING,
DAY_SHD_START TYPE STRING,
DAY_SHD_END TYPE STRING,
DURA TYPE STRING,
DURA_UNIT TYPE STRING,
SLOT_STAT TYPE STRING,
MAV_STAT TYPE STRING,
TRIAL_SSTAT TYPE STRING,
TRIAL_USTAT TYPE STRING,
PLNUM TYPE STRING,
AUFNR TYPE STRING,
RESPONSIBLE TYPE STRING,
RESP_STXT TYPE STRING,
PROJECT TYPE STRING,
PRODUCT TYPE STRING,
MAKTX TYPE STRING,
PRODH TYPE STRING,
VTEXT TYPE STRING,
CT TYPE STRING,
FT TYPE STRING,
NO_EDIT TYPE STRING,
FLG_SAVE TYPE STRING,
FLG_SCED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMXTS_MTP_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_RMXTS_MTP_SCHEDULE_STR-WEEK_NO sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-CAL_DATE sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-WEEK_DAY sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-ICON_STAT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-ICON_MAV sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-LINE sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-SUPER_TRIAL sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-TRIALTYPE sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-TRIALID sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-TRIALNAME sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-DAY_REQ_START sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-DAY_REQ_END sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-DAY_SHD_START sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-DAY_SHD_END sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-DURA sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-DURA_UNIT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-SLOT_STAT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-MAV_STAT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-TRIAL_SSTAT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-TRIAL_USTAT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-PLNUM sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-AUFNR sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-RESPONSIBLE sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-RESP_STXT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-PROJECT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-PRODUCT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-MAKTX sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-PRODH sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-VTEXT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-CT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-FT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-NO_EDIT sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-FLG_SAVE sy-vline 
WA_RMXTS_MTP_SCHEDULE_STR-FLG_SCED sy-vline      INTO ld_text SEPARATED BY SPACE.

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