ABAP Select data from SAP table P23_FORM_TCER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P23_FORM_TCER 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 P23_FORM_TCER. 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 P23_FORM_TCER 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_P23_FORM_TCER TYPE STANDARD TABLE OF P23_FORM_TCER,
      WA_P23_FORM_TCER TYPE P23_FORM_TCER,
      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: <P23_FORM_TCER> TYPE P23_FORM_TCER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P23_FORM_TCER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P23_FORM_TCER
  INTO TABLE IT_P23_FORM_TCER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P23_FORM_TCER
*  INTO TABLE @DATA(IT_P23_FORM_TCER2).
*--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_P23_FORM_TCER INDEX 1 INTO DATA(WA_P23_FORM_TCER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P23_FORM_TCER ASSIGNING <P23_FORM_TCER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P23_FORM_TCER>-NACHN = 1.
<P23_FORM_TCER>-VORNA = 1.
<P23_FORM_TCER>-PERID = 1.
<P23_FORM_TCER>-PERID2 = 1.
<P23_FORM_TCER>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_P23_FORM_TCER INTO WA_P23_FORM_TCER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P23_FORM_TCER-ENDDA, sy-vline,
  WA_P23_FORM_TCER-STILL, sy-vline,
  WA_P23_FORM_TCER-TITLE_OF_JOB, sy-vline,
  WA_P23_FORM_TCER-ABSENCE_BEGDA, sy-vline,
  WA_P23_FORM_TCER-ABSENCE_ENDDA, sy-vline,
  WA_P23_FORM_TCER-PSARB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P23_FORM_TCER 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_P23_FORM_TCER 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_P23_FORM_TCER INTO WA_P23_FORM_TCER.


*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_P23_FORM_TCER_STR, 
NACHN TYPE STRING,
VORNA TYPE STRING,
PERID TYPE STRING,
PERID2 TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
STILL TYPE STRING,
TITLE_OF_JOB TYPE STRING,
ABSENCE_BEGDA TYPE STRING,
ABSENCE_ENDDA TYPE STRING,
PSARB TYPE STRING,
PSARB_DEC TYPE STRING,
LIMIT TYPE STRING,
PROBA TYPE STRING,
PROBATIONARY_DATE TYPE STRING,
LIMITED_CONTRACT_DATE TYPE STRING,
INTERMITTENT TYPE STRING,
WOSTD TYPE STRING,
WOSTD_DEC TYPE STRING,
WOSTD_PART TYPE STRING,
WOSTD_PART_DEC TYPE STRING,
BSGRD TYPE STRING,
BSGRD_DEC TYPE STRING,
WORKING_HOURS_VARIES TYPE STRING,
POOL TYPE STRING,
COMPEN TYPE STRING,
WORKED_HOURS_BEGDA TYPE STRING,
WORKED_HOURS_ENDDA TYPE STRING,
WORKED_HOURS_Y0 TYPE STRING,
WORKED_HOURS_Y1 TYPE STRING,
PAY_DATA_PER TYPE STRING,
PAY_DATA_BASPAY TYPE STRING,
PAY_DATA_BASPAY_DEC TYPE STRING,
PAY_DATA_VARIATED TYPE STRING,
PAY_DATA_OVERTIME TYPE STRING,
PAY_DATA_OVERTIME_DEC TYPE STRING,
PAY_DATA_MERTID TYPE STRING,
PAY_DATA_MERTID_DEC TYPE STRING,
PAY_DATA_ADDITIONAL TYPE STRING,
SCHOOL_OTHERS TYPE STRING,
SCHOOL_TEACHER TYPE STRING,
SCHOOL_HOLIDAY_DAYS TYPE STRING,
SCHOOL_HOLIDAY_AMOUNT TYPE STRING,
SCHOOL_HOLIDAY_AMOUNT_DEC TYPE STRING,
SCHOOL_NONWORKING TYPE STRING,
SCHOOL_NONWORKING_DEC TYPE STRING,
GROSS_AMTS TYPE STRING,
ADDITIONAL_INFORMATION TYPE STRING,
NAME_OF_EMPLOYER TYPE STRING,
ORGANIZATION_NUMBER TYPE STRING,
ORGANIZATION_NUMBER2 TYPE STRING,
ADDRESS_OF_EMPLOYER TYPE STRING,
PHONE_TO_SOURCE TYPE STRING,
PLACE_NAME TYPE STRING,
DATE TYPE STRING,
UNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P23_FORM_TCER_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_P23_FORM_TCER_STR-NACHN sy-vline 
WA_P23_FORM_TCER_STR-VORNA sy-vline 
WA_P23_FORM_TCER_STR-PERID sy-vline 
WA_P23_FORM_TCER_STR-PERID2 sy-vline 
WA_P23_FORM_TCER_STR-BEGDA sy-vline 
WA_P23_FORM_TCER_STR-ENDDA sy-vline 
WA_P23_FORM_TCER_STR-STILL sy-vline 
WA_P23_FORM_TCER_STR-TITLE_OF_JOB sy-vline 
WA_P23_FORM_TCER_STR-ABSENCE_BEGDA sy-vline 
WA_P23_FORM_TCER_STR-ABSENCE_ENDDA sy-vline 
WA_P23_FORM_TCER_STR-PSARB sy-vline 
WA_P23_FORM_TCER_STR-PSARB_DEC sy-vline 
WA_P23_FORM_TCER_STR-LIMIT sy-vline 
WA_P23_FORM_TCER_STR-PROBA sy-vline 
WA_P23_FORM_TCER_STR-PROBATIONARY_DATE sy-vline 
WA_P23_FORM_TCER_STR-LIMITED_CONTRACT_DATE sy-vline 
WA_P23_FORM_TCER_STR-INTERMITTENT sy-vline 
WA_P23_FORM_TCER_STR-WOSTD sy-vline 
WA_P23_FORM_TCER_STR-WOSTD_DEC sy-vline 
WA_P23_FORM_TCER_STR-WOSTD_PART sy-vline 
WA_P23_FORM_TCER_STR-WOSTD_PART_DEC sy-vline 
WA_P23_FORM_TCER_STR-BSGRD sy-vline 
WA_P23_FORM_TCER_STR-BSGRD_DEC sy-vline 
WA_P23_FORM_TCER_STR-WORKING_HOURS_VARIES sy-vline 
WA_P23_FORM_TCER_STR-POOL sy-vline 
WA_P23_FORM_TCER_STR-COMPEN sy-vline 
WA_P23_FORM_TCER_STR-WORKED_HOURS_BEGDA sy-vline 
WA_P23_FORM_TCER_STR-WORKED_HOURS_ENDDA sy-vline 
WA_P23_FORM_TCER_STR-WORKED_HOURS_Y0 sy-vline 
WA_P23_FORM_TCER_STR-WORKED_HOURS_Y1 sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_PER sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_BASPAY sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_BASPAY_DEC sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_VARIATED sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_OVERTIME sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_OVERTIME_DEC sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_MERTID sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_MERTID_DEC sy-vline 
WA_P23_FORM_TCER_STR-PAY_DATA_ADDITIONAL sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_OTHERS sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_TEACHER sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_HOLIDAY_DAYS sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_HOLIDAY_AMOUNT sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_HOLIDAY_AMOUNT_DEC sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_NONWORKING sy-vline 
WA_P23_FORM_TCER_STR-SCHOOL_NONWORKING_DEC sy-vline 
WA_P23_FORM_TCER_STR-GROSS_AMTS sy-vline 
WA_P23_FORM_TCER_STR-ADDITIONAL_INFORMATION sy-vline 
WA_P23_FORM_TCER_STR-NAME_OF_EMPLOYER sy-vline 
WA_P23_FORM_TCER_STR-ORGANIZATION_NUMBER sy-vline 
WA_P23_FORM_TCER_STR-ORGANIZATION_NUMBER2 sy-vline 
WA_P23_FORM_TCER_STR-ADDRESS_OF_EMPLOYER sy-vline 
WA_P23_FORM_TCER_STR-PHONE_TO_SOURCE sy-vline 
WA_P23_FORM_TCER_STR-PLACE_NAME sy-vline 
WA_P23_FORM_TCER_STR-DATE sy-vline 
WA_P23_FORM_TCER_STR-UNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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