ABAP Select data from SAP table IEMPLOYMENTDET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEMPLOYMENTDET
*  INTO TABLE @DATA(IT_IEMPLOYMENTDET2).
*--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_IEMPLOYMENTDET INDEX 1 INTO DATA(WA_IEMPLOYMENTDET2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEMPLOYMENTDET-ISMAINEMPLOYMENT, sy-vline,
  WA_IEMPLOYMENTDET-COMPANYCODE, sy-vline,
  WA_IEMPLOYMENTDET-COSTCENTER, sy-vline,
  WA_IEMPLOYMENTDET-JOB, sy-vline,
  WA_IEMPLOYMENTDET-JOBNAME, sy-vline,
  WA_IEMPLOYMENTDET-ORGANIZATIONALUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEMPLOYMENTDET 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_IEMPLOYMENTDET 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_IEMPLOYMENTDET INTO WA_IEMPLOYMENTDET.


*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_IEMPLOYMENTDET-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEMPLOYMENTDET-COSTCENTER.
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_IEMPLOYMENTDET_STR, 
MANDT TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
PERSONNELNUMBER TYPE STRING,
ISMAINEMPLOYMENT TYPE STRING,
COMPANYCODE TYPE STRING,
COSTCENTER TYPE STRING,
JOB TYPE STRING,
JOBNAME TYPE STRING,
ORGANIZATIONALUNIT TYPE STRING,
ORGANIZATIONALUNITNAME TYPE STRING,
EMPLOYMENTSTATUS TYPE STRING,
EMPLOYMENTPERCENT TYPE STRING,
WEEKLYWORKINGHOURS TYPE STRING,
BUSINESSUNIT TYPE STRING,
BUSINESSUNITNAME TYPE STRING,
DEPARTMENT TYPE STRING,
DEPARTMENTNAME TYPE STRING,
DIVISION TYPE STRING,
DIVISIONNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEMPLOYMENTDET_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_IEMPLOYMENTDET_STR-MANDT sy-vline 
WA_IEMPLOYMENTDET_STR-EMPLOYMENTINTERNALID sy-vline 
WA_IEMPLOYMENTDET_STR-STARTDATE sy-vline 
WA_IEMPLOYMENTDET_STR-ENDDATE sy-vline 
WA_IEMPLOYMENTDET_STR-PERSONNELNUMBER sy-vline 
WA_IEMPLOYMENTDET_STR-ISMAINEMPLOYMENT sy-vline 
WA_IEMPLOYMENTDET_STR-COMPANYCODE sy-vline 
WA_IEMPLOYMENTDET_STR-COSTCENTER sy-vline 
WA_IEMPLOYMENTDET_STR-JOB sy-vline 
WA_IEMPLOYMENTDET_STR-JOBNAME sy-vline 
WA_IEMPLOYMENTDET_STR-ORGANIZATIONALUNIT sy-vline 
WA_IEMPLOYMENTDET_STR-ORGANIZATIONALUNITNAME sy-vline 
WA_IEMPLOYMENTDET_STR-EMPLOYMENTSTATUS sy-vline 
WA_IEMPLOYMENTDET_STR-EMPLOYMENTPERCENT sy-vline 
WA_IEMPLOYMENTDET_STR-WEEKLYWORKINGHOURS sy-vline 
WA_IEMPLOYMENTDET_STR-BUSINESSUNIT sy-vline 
WA_IEMPLOYMENTDET_STR-BUSINESSUNITNAME sy-vline 
WA_IEMPLOYMENTDET_STR-DEPARTMENT sy-vline 
WA_IEMPLOYMENTDET_STR-DEPARTMENTNAME sy-vline 
WA_IEMPLOYMENTDET_STR-DIVISION sy-vline 
WA_IEMPLOYMENTDET_STR-DIVISIONNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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