ABAP Select data from SAP table CTE_S_EMPLOYEE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CTE_S_EMPLOYEE
*  INTO TABLE @DATA(IT_CTE_S_EMPLOYEE2).
*--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_CTE_S_EMPLOYEE INDEX 1 INTO DATA(WA_CTE_S_EMPLOYEE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CTE_S_EMPLOYEE>-EMPLOYEE_ID = 1.
<CTE_S_EMPLOYEE>-FEED_RECORD_NUMBER = 1.
<CTE_S_EMPLOYEE>-LOGIN_ID = 1.
<CTE_S_EMPLOYEE>-LOCALE_NAME = 1.
<CTE_S_EMPLOYEE>-ACTIVE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CTE_S_EMPLOYEE-PASSWORD, sy-vline,
  WA_CTE_S_EMPLOYEE-FIRST_NAME, sy-vline,
  WA_CTE_S_EMPLOYEE-LAST_NAME, sy-vline,
  WA_CTE_S_EMPLOYEE-MIDDLE_INITIAL, sy-vline,
  WA_CTE_S_EMPLOYEE-EMAIL_ADDRESS, sy-vline,
  WA_CTE_S_EMPLOYEE-LEDGER_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CTE_S_EMPLOYEE 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_CTE_S_EMPLOYEE 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_CTE_S_EMPLOYEE INTO WA_CTE_S_EMPLOYEE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CTE_S_EMPLOYEE_STR, 
EMPLOYEE_ID TYPE STRING,
FEED_RECORD_NUMBER TYPE STRING,
LOGIN_ID TYPE STRING,
LOCALE_NAME TYPE STRING,
ACTIVE TYPE STRING,
PASSWORD TYPE STRING,
FIRST_NAME TYPE STRING,
LAST_NAME TYPE STRING,
MIDDLE_INITIAL TYPE STRING,
EMAIL_ADDRESS TYPE STRING,
LEDGER_KEY TYPE STRING,
ORG_UNIT_1 TYPE STRING,
ORG_UNIT_2 TYPE STRING,
ORG_UNIT_3 TYPE STRING,
ORG_UNIT_4 TYPE STRING,
ORG_UNIT_5 TYPE STRING,
ORG_UNIT_6 TYPE STRING,
CUSTOM1 TYPE STRING,
CUSTOM2 TYPE STRING,
CUSTOM3 TYPE STRING,
CUSTOM4 TYPE STRING,
CUSTOM5 TYPE STRING,
CUSTOM6 TYPE STRING,
CUSTOM7 TYPE STRING,
CUSTOM8 TYPE STRING,
CUSTOM9 TYPE STRING,
CUSTOM10 TYPE STRING,
CUSTOM11 TYPE STRING,
CUSTOM12 TYPE STRING,
CUSTOM13 TYPE STRING,
CUSTOM14 TYPE STRING,
CUSTOM15 TYPE STRING,
CUSTOM16 TYPE STRING,
CUSTOM17 TYPE STRING,
CUSTOM18 TYPE STRING,
CUSTOM19 TYPE STRING,
CUSTOM20 TYPE STRING,
CUSTOM21 TYPE STRING,
COUNTRY_CODE TYPE STRING,
CASH_ADVANCE_ACCOUNT_CODE TYPE STRING,
CURRENCY_CODE TYPE STRING,
COUNTRY_SUB_CODE TYPE STRING,
IS_EXPENSE_USER TYPE STRING,
IS_EXPENSE_APPROVER TYPE STRING,
IS_TRIP_USER TYPE STRING,
IS_INVOICE_USER TYPE STRING,
IS_INVOICE_APPROVER TYPE STRING,
EXPENSE_APPROVER_EMPLOYEE_ID TYPE STRING,
NEW_LOGIN_ID TYPE STRING,
NEW_EMPLOYEE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CTE_S_EMPLOYEE_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_CTE_S_EMPLOYEE_STR-EMPLOYEE_ID sy-vline 
WA_CTE_S_EMPLOYEE_STR-FEED_RECORD_NUMBER sy-vline 
WA_CTE_S_EMPLOYEE_STR-LOGIN_ID sy-vline 
WA_CTE_S_EMPLOYEE_STR-LOCALE_NAME sy-vline 
WA_CTE_S_EMPLOYEE_STR-ACTIVE sy-vline 
WA_CTE_S_EMPLOYEE_STR-PASSWORD sy-vline 
WA_CTE_S_EMPLOYEE_STR-FIRST_NAME sy-vline 
WA_CTE_S_EMPLOYEE_STR-LAST_NAME sy-vline 
WA_CTE_S_EMPLOYEE_STR-MIDDLE_INITIAL sy-vline 
WA_CTE_S_EMPLOYEE_STR-EMAIL_ADDRESS sy-vline 
WA_CTE_S_EMPLOYEE_STR-LEDGER_KEY sy-vline 
WA_CTE_S_EMPLOYEE_STR-ORG_UNIT_1 sy-vline 
WA_CTE_S_EMPLOYEE_STR-ORG_UNIT_2 sy-vline 
WA_CTE_S_EMPLOYEE_STR-ORG_UNIT_3 sy-vline 
WA_CTE_S_EMPLOYEE_STR-ORG_UNIT_4 sy-vline 
WA_CTE_S_EMPLOYEE_STR-ORG_UNIT_5 sy-vline 
WA_CTE_S_EMPLOYEE_STR-ORG_UNIT_6 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM1 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM2 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM3 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM4 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM5 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM6 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM7 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM8 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM9 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM10 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM11 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM12 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM13 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM14 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM15 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM16 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM17 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM18 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM19 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM20 sy-vline 
WA_CTE_S_EMPLOYEE_STR-CUSTOM21 sy-vline 
WA_CTE_S_EMPLOYEE_STR-COUNTRY_CODE sy-vline 
WA_CTE_S_EMPLOYEE_STR-CASH_ADVANCE_ACCOUNT_CODE sy-vline 
WA_CTE_S_EMPLOYEE_STR-CURRENCY_CODE sy-vline 
WA_CTE_S_EMPLOYEE_STR-COUNTRY_SUB_CODE sy-vline 
WA_CTE_S_EMPLOYEE_STR-IS_EXPENSE_USER sy-vline 
WA_CTE_S_EMPLOYEE_STR-IS_EXPENSE_APPROVER sy-vline 
WA_CTE_S_EMPLOYEE_STR-IS_TRIP_USER sy-vline 
WA_CTE_S_EMPLOYEE_STR-IS_INVOICE_USER sy-vline 
WA_CTE_S_EMPLOYEE_STR-IS_INVOICE_APPROVER sy-vline 
WA_CTE_S_EMPLOYEE_STR-EXPENSE_APPROVER_EMPLOYEE_ID sy-vline 
WA_CTE_S_EMPLOYEE_STR-NEW_LOGIN_ID sy-vline 
WA_CTE_S_EMPLOYEE_STR-NEW_EMPLOYEE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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