ABAP Select data from SAP table SCHEDMAN_SELECT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCHEDMAN_SELECT
*  INTO TABLE @DATA(IT_SCHEDMAN_SELECT2).
*--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_SCHEDMAN_SELECT INDEX 1 INTO DATA(WA_SCHEDMAN_SELECT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCHEDMAN_SELECT>-SDATE = 1.
<SCHEDMAN_SELECT>-EDATE = 1.
<SCHEDMAN_SELECT>-STIME = 1.
<SCHEDMAN_SELECT>-ETIME = 1.
<SCHEDMAN_SELECT>-UNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCHEDMAN_SELECT-APLSTAT, sy-vline,
  WA_SCHEDMAN_SELECT-REPID, sy-vline,
  WA_SCHEDMAN_SELECT-TCODE, sy-vline,
  WA_SCHEDMAN_SELECT-TESTFLAG, sy-vline,
  WA_SCHEDMAN_SELECT-WORKLISTFLAG, sy-vline,
  WA_SCHEDMAN_SELECT-VARIANTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCHEDMAN_SELECT 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_SCHEDMAN_SELECT 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_SCHEDMAN_SELECT INTO WA_SCHEDMAN_SELECT.


*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 MODAT, internal->external for field SDATE
CALL FUNCTION 'CONVERSION_EXIT_MODAT_OUTPUT'
  EXPORTING
    input =                      WA_SCHEDMAN_SELECT-SDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCHEDMAN_SELECT-SDATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MODAT, internal->external for field EDATE
CALL FUNCTION 'CONVERSION_EXIT_MODAT_OUTPUT'
  EXPORTING
    input =                      WA_SCHEDMAN_SELECT-EDATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCHEDMAN_SELECT-EDATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TIMLO, internal->external for field STIME
CALL FUNCTION 'CONVERSION_EXIT_TIMLO_OUTPUT'
  EXPORTING
    input =                      WA_SCHEDMAN_SELECT-STIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCHEDMAN_SELECT-STIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TIMLO, internal->external for field ETIME
CALL FUNCTION 'CONVERSION_EXIT_TIMLO_OUTPUT'
  EXPORTING
    input =                      WA_SCHEDMAN_SELECT-ETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCHEDMAN_SELECT-ETIME.
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_SCHEDMAN_SELECT_STR, 
SDATE TYPE STRING,
EDATE TYPE STRING,
STIME TYPE STRING,
ETIME TYPE STRING,
UNAME TYPE STRING,
APLSTAT TYPE STRING,
REPID TYPE STRING,
TCODE TYPE STRING,
TESTFLAG TYPE STRING,
WORKLISTFLAG TYPE STRING,
VARIANTE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCHEDMAN_SELECT_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_SCHEDMAN_SELECT_STR-SDATE sy-vline 
WA_SCHEDMAN_SELECT_STR-EDATE sy-vline 
WA_SCHEDMAN_SELECT_STR-STIME sy-vline 
WA_SCHEDMAN_SELECT_STR-ETIME sy-vline 
WA_SCHEDMAN_SELECT_STR-UNAME sy-vline 
WA_SCHEDMAN_SELECT_STR-APLSTAT sy-vline 
WA_SCHEDMAN_SELECT_STR-REPID sy-vline 
WA_SCHEDMAN_SELECT_STR-TCODE sy-vline 
WA_SCHEDMAN_SELECT_STR-TESTFLAG sy-vline 
WA_SCHEDMAN_SELECT_STR-WORKLISTFLAG sy-vline 
WA_SCHEDMAN_SELECT_STR-VARIANTE sy-vline      INTO ld_text SEPARATED BY SPACE.

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