ABAP Select data from SAP table WFMCASV_SCHEDULE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WFMCASV_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 WFMCASV_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 WFMCASV_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_WFMCASV_SCHEDULE TYPE STANDARD TABLE OF WFMCASV_SCHEDULE,
      WA_WFMCASV_SCHEDULE TYPE WFMCASV_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: <WFMCASV_SCHEDULE> TYPE WFMCASV_SCHEDULE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WFMCASV_SCHEDULE
*  INTO TABLE @DATA(IT_WFMCASV_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_WFMCASV_SCHEDULE INDEX 1 INTO DATA(WA_WFMCASV_SCHEDULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WFMCASV_SCHEDULE>-MANDT = 1.
<WFMCASV_SCHEDULE>-SCHEDULE_ID = 1.
<WFMCASV_SCHEDULE>-ORG_PLVAR = 1.
<WFMCASV_SCHEDULE>-ORG_OTYPE = 1.
<WFMCASV_SCHEDULE>-ORG_OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WFMCASV_SCHEDULE-SCHED_START_DATE, sy-vline,
  WA_WFMCASV_SCHEDULE-SCHED_END_DATE, sy-vline,
  WA_WFMCASV_SCHEDULE-SHIFT_ID, sy-vline,
  WA_WFMCASV_SCHEDULE-PARTNER, sy-vline,
  WA_WFMCASV_SCHEDULE-CHARGE_DATE, sy-vline,
  WA_WFMCASV_SCHEDULE-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WFMCASV_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_WFMCASV_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_WFMCASV_SCHEDULE INTO WA_WFMCASV_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 PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WFMCASV_SCHEDULE-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCASV_SCHEDULE-PARTNER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TZTMP, internal->external for field SEG_START
CALL FUNCTION 'CONVERSION_EXIT_TZTMP_OUTPUT'
  EXPORTING
    input =                      WA_WFMCASV_SCHEDULE-SEG_START
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCASV_SCHEDULE-SEG_START.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TZTMP, internal->external for field SEG_END
CALL FUNCTION 'CONVERSION_EXIT_TZTMP_OUTPUT'
  EXPORTING
    input =                      WA_WFMCASV_SCHEDULE-SEG_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCASV_SCHEDULE-SEG_END.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TZTMP, internal->external for field FIXED_START
CALL FUNCTION 'CONVERSION_EXIT_TZTMP_OUTPUT'
  EXPORTING
    input =                      WA_WFMCASV_SCHEDULE-FIXED_START
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCASV_SCHEDULE-FIXED_START.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TZTMP, internal->external for field FIXED_END
CALL FUNCTION 'CONVERSION_EXIT_TZTMP_OUTPUT'
  EXPORTING
    input =                      WA_WFMCASV_SCHEDULE-FIXED_END
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCASV_SCHEDULE-FIXED_END.
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_WFMCASV_SCHEDULE_STR, 
MANDT TYPE STRING,
SCHEDULE_ID TYPE STRING,
ORG_PLVAR TYPE STRING,
ORG_OTYPE TYPE STRING,
ORG_OBJID TYPE STRING,
SCHED_START_DATE TYPE STRING,
SCHED_END_DATE TYPE STRING,
SHIFT_ID TYPE STRING,
PARTNER TYPE STRING,
CHARGE_DATE TYPE STRING,
STATUS TYPE STRING,
SHIFT_SEG_ID TYPE STRING,
BRKTYPE_ID TYPE STRING,
WRKAREA_ID TYPE STRING,
SCHDL_EVT_ID TYPE STRING,
SEG_START TYPE STRING,
SEG_END TYPE STRING,
SEGMENT_PAY TYPE STRING,
CURRENCY_CODE TYPE STRING,
REGULAR_HRS TYPE STRING,
WORK_HRS_UNIT TYPE STRING,
REGULAR_PAY TYPE STRING,
OVERTIME_HRS TYPE STRING,
OVERTIME_PAY TYPE STRING,
UNPAID_HRS TYPE STRING,
PARENT_SEG_ID TYPE STRING,
REPLACED_FLAG TYPE STRING,
MODIFIED_FLAG TYPE STRING,
FIXED_TYPE TYPE STRING,
FIXED_START TYPE STRING,
FIXED_END TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WFMCASV_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_WFMCASV_SCHEDULE_STR-MANDT sy-vline 
WA_WFMCASV_SCHEDULE_STR-SCHEDULE_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-ORG_PLVAR sy-vline 
WA_WFMCASV_SCHEDULE_STR-ORG_OTYPE sy-vline 
WA_WFMCASV_SCHEDULE_STR-ORG_OBJID sy-vline 
WA_WFMCASV_SCHEDULE_STR-SCHED_START_DATE sy-vline 
WA_WFMCASV_SCHEDULE_STR-SCHED_END_DATE sy-vline 
WA_WFMCASV_SCHEDULE_STR-SHIFT_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-PARTNER sy-vline 
WA_WFMCASV_SCHEDULE_STR-CHARGE_DATE sy-vline 
WA_WFMCASV_SCHEDULE_STR-STATUS sy-vline 
WA_WFMCASV_SCHEDULE_STR-SHIFT_SEG_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-BRKTYPE_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-WRKAREA_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-SCHDL_EVT_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-SEG_START sy-vline 
WA_WFMCASV_SCHEDULE_STR-SEG_END sy-vline 
WA_WFMCASV_SCHEDULE_STR-SEGMENT_PAY sy-vline 
WA_WFMCASV_SCHEDULE_STR-CURRENCY_CODE sy-vline 
WA_WFMCASV_SCHEDULE_STR-REGULAR_HRS sy-vline 
WA_WFMCASV_SCHEDULE_STR-WORK_HRS_UNIT sy-vline 
WA_WFMCASV_SCHEDULE_STR-REGULAR_PAY sy-vline 
WA_WFMCASV_SCHEDULE_STR-OVERTIME_HRS sy-vline 
WA_WFMCASV_SCHEDULE_STR-OVERTIME_PAY sy-vline 
WA_WFMCASV_SCHEDULE_STR-UNPAID_HRS sy-vline 
WA_WFMCASV_SCHEDULE_STR-PARENT_SEG_ID sy-vline 
WA_WFMCASV_SCHEDULE_STR-REPLACED_FLAG sy-vline 
WA_WFMCASV_SCHEDULE_STR-MODIFIED_FLAG sy-vline 
WA_WFMCASV_SCHEDULE_STR-FIXED_TYPE sy-vline 
WA_WFMCASV_SCHEDULE_STR-FIXED_START sy-vline 
WA_WFMCASV_SCHEDULE_STR-FIXED_END sy-vline      INTO ld_text SEPARATED BY SPACE.

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