ABAP Select data from SAP table IEMPLDETFORKDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEMPLDETFORKDATE
*  INTO TABLE @DATA(IT_IEMPLDETFORKDATE2).
*--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_IEMPLDETFORKDATE INDEX 1 INTO DATA(WA_IEMPLDETFORKDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEMPLDETFORKDATE>-MANDT = 1.
<IEMPLDETFORKDATE>-EMPLOYMENTINTERNALID = 1.
<IEMPLDETFORKDATE>-STARTDATE = 1.
<IEMPLDETFORKDATE>-ENDDATE = 1.
<IEMPLDETFORKDATE>-PERSONNELNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEMPLDETFORKDATE-ISMAINEMPLOYMENT, sy-vline,
  WA_IEMPLDETFORKDATE-EMPLOYMENTSTATUS, sy-vline,
  WA_IEMPLDETFORKDATE-COMPANYCODE, sy-vline,
  WA_IEMPLDETFORKDATE-COSTCENTER, sy-vline,
  WA_IEMPLDETFORKDATE-EMPLOYMENTPERCENT, sy-vline,
  WA_IEMPLDETFORKDATE-WEEKLYWORKINGHOURS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEMPLDETFORKDATE 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_IEMPLDETFORKDATE 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_IEMPLDETFORKDATE INTO WA_IEMPLDETFORKDATE.


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

*Conversion exit ALPHA, internal->external for field SERVICECOSTLEVEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IEMPLDETFORKDATE-SERVICECOSTLEVEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEMPLDETFORKDATE-SERVICECOSTLEVEL.
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_IEMPLDETFORKDATE_STR, 
MANDT TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
PERSONNELNUMBER TYPE STRING,
ISMAINEMPLOYMENT TYPE STRING,
EMPLOYMENTSTATUS TYPE STRING,
COMPANYCODE TYPE STRING,
COSTCENTER TYPE STRING,
EMPLOYMENTPERCENT TYPE STRING,
WEEKLYWORKINGHOURS TYPE STRING,
JOB TYPE STRING,
JOBCODE TYPE STRING,
JOBNAME TYPE STRING,
ORGANIZATIONALUNIT TYPE STRING,
ORGANIZATIONALUNITCODE TYPE STRING,
ORGANIZATIONALUNITNAME TYPE STRING,
SERVICECOSTLEVEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEMPLDETFORKDATE_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_IEMPLDETFORKDATE_STR-MANDT sy-vline 
WA_IEMPLDETFORKDATE_STR-EMPLOYMENTINTERNALID sy-vline 
WA_IEMPLDETFORKDATE_STR-STARTDATE sy-vline 
WA_IEMPLDETFORKDATE_STR-ENDDATE sy-vline 
WA_IEMPLDETFORKDATE_STR-PERSONNELNUMBER sy-vline 
WA_IEMPLDETFORKDATE_STR-ISMAINEMPLOYMENT sy-vline 
WA_IEMPLDETFORKDATE_STR-EMPLOYMENTSTATUS sy-vline 
WA_IEMPLDETFORKDATE_STR-COMPANYCODE sy-vline 
WA_IEMPLDETFORKDATE_STR-COSTCENTER sy-vline 
WA_IEMPLDETFORKDATE_STR-EMPLOYMENTPERCENT sy-vline 
WA_IEMPLDETFORKDATE_STR-WEEKLYWORKINGHOURS sy-vline 
WA_IEMPLDETFORKDATE_STR-JOB sy-vline 
WA_IEMPLDETFORKDATE_STR-JOBCODE sy-vline 
WA_IEMPLDETFORKDATE_STR-JOBNAME sy-vline 
WA_IEMPLDETFORKDATE_STR-ORGANIZATIONALUNIT sy-vline 
WA_IEMPLDETFORKDATE_STR-ORGANIZATIONALUNITCODE sy-vline 
WA_IEMPLDETFORKDATE_STR-ORGANIZATIONALUNITNAME sy-vline 
WA_IEMPLDETFORKDATE_STR-SERVICECOSTLEVEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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