ABAP Select data from SAP table TZONECHECK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TZONECHECK
*  INTO TABLE @DATA(IT_TZONECHECK2).
*--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_TZONECHECK INDEX 1 INTO DATA(WA_TZONECHECK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TZONECHECK>-CLIENT = 1.
<TZONECHECK>-UTZONESYS = 1.
<TZONECHECK>-UTZONEDEF = 1.
<TZONECHECK>-UFLACTIVE = 1.
<TZONECHECK>-UFLCHANGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TZONECHECK-UFLDELETE, sy-vline,
  WA_TZONECHECK-ZTZONE, sy-vline,
  WA_TZONECHECK-ZONERULE, sy-vline,
  WA_TZONECHECK-ZDSTRULE, sy-vline,
  WA_TZONECHECK-ZFLACTIVE, sy-vline,
  WA_TZONECHECK-RZONERULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TZONECHECK 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_TZONECHECK 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_TZONECHECK INTO WA_TZONECHECK.


*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 GJAHR, internal->external for field DFYEARACT
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TZONECHECK-DFYEARACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZONECHECK-DFYEARACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field DVYEARFR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_TZONECHECK-DVYEARFR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZONECHECK-DVYEARFR.
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_TZONECHECK_STR, 
CLIENT TYPE STRING,
UTZONESYS TYPE STRING,
UTZONEDEF TYPE STRING,
UFLACTIVE TYPE STRING,
UFLCHANGE TYPE STRING,
UFLDELETE TYPE STRING,
ZTZONE TYPE STRING,
ZONERULE TYPE STRING,
ZDSTRULE TYPE STRING,
ZFLACTIVE TYPE STRING,
RZONERULE TYPE STRING,
RUTCDIFF TYPE STRING,
RUTCSIGN TYPE STRING,
RFLACTIVE TYPE STRING,
DDSTRULE TYPE STRING,
DDSTDIFF TYPE STRING,
DFLACTIVE TYPE STRING,
DFDSTRULE TYPE STRING,
DFYEARACT TYPE STRING,
DFDATEFR TYPE STRING,
DFTIMEFR TYPE STRING,
DFDATETO TYPE STRING,
DFTIMETO TYPE STRING,
DVDSTRULE TYPE STRING,
DVYEARFR TYPE STRING,
DVMONTHFR TYPE STRING,
DVWEEKDFR TYPE STRING,
DVWEEKDCFR TYPE STRING,
DVTIMEFR TYPE STRING,
DVMONTHTO TYPE STRING,
DVWEEKDTO TYPE STRING,
DVWEEKDCTO TYPE STRING,
DVTIMETO TYPE STRING,
DTDESCRIPT TYPE STRING,
RTDESCRIPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TZONECHECK_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_TZONECHECK_STR-CLIENT sy-vline 
WA_TZONECHECK_STR-UTZONESYS sy-vline 
WA_TZONECHECK_STR-UTZONEDEF sy-vline 
WA_TZONECHECK_STR-UFLACTIVE sy-vline 
WA_TZONECHECK_STR-UFLCHANGE sy-vline 
WA_TZONECHECK_STR-UFLDELETE sy-vline 
WA_TZONECHECK_STR-ZTZONE sy-vline 
WA_TZONECHECK_STR-ZONERULE sy-vline 
WA_TZONECHECK_STR-ZDSTRULE sy-vline 
WA_TZONECHECK_STR-ZFLACTIVE sy-vline 
WA_TZONECHECK_STR-RZONERULE sy-vline 
WA_TZONECHECK_STR-RUTCDIFF sy-vline 
WA_TZONECHECK_STR-RUTCSIGN sy-vline 
WA_TZONECHECK_STR-RFLACTIVE sy-vline 
WA_TZONECHECK_STR-DDSTRULE sy-vline 
WA_TZONECHECK_STR-DDSTDIFF sy-vline 
WA_TZONECHECK_STR-DFLACTIVE sy-vline 
WA_TZONECHECK_STR-DFDSTRULE sy-vline 
WA_TZONECHECK_STR-DFYEARACT sy-vline 
WA_TZONECHECK_STR-DFDATEFR sy-vline 
WA_TZONECHECK_STR-DFTIMEFR sy-vline 
WA_TZONECHECK_STR-DFDATETO sy-vline 
WA_TZONECHECK_STR-DFTIMETO sy-vline 
WA_TZONECHECK_STR-DVDSTRULE sy-vline 
WA_TZONECHECK_STR-DVYEARFR sy-vline 
WA_TZONECHECK_STR-DVMONTHFR sy-vline 
WA_TZONECHECK_STR-DVWEEKDFR sy-vline 
WA_TZONECHECK_STR-DVWEEKDCFR sy-vline 
WA_TZONECHECK_STR-DVTIMEFR sy-vline 
WA_TZONECHECK_STR-DVMONTHTO sy-vline 
WA_TZONECHECK_STR-DVWEEKDTO sy-vline 
WA_TZONECHECK_STR-DVWEEKDCTO sy-vline 
WA_TZONECHECK_STR-DVTIMETO sy-vline 
WA_TZONECHECK_STR-DTDESCRIPT sy-vline 
WA_TZONECHECK_STR-RTDESCRIPT sy-vline      INTO ld_text SEPARATED BY SPACE.

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