ABAP Select data from SAP table HRV_WIZ3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRV_WIZ3 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 HRV_WIZ3. 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 HRV_WIZ3 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_HRV_WIZ3 TYPE STANDARD TABLE OF HRV_WIZ3,
      WA_HRV_WIZ3 TYPE HRV_WIZ3,
      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: <HRV_WIZ3> TYPE HRV_WIZ3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRV_WIZ3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRV_WIZ3
  INTO TABLE IT_HRV_WIZ3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRV_WIZ3
*  INTO TABLE @DATA(IT_HRV_WIZ32).
*--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_HRV_WIZ3 INDEX 1 INTO DATA(WA_HRV_WIZ32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRV_WIZ3 ASSIGNING <HRV_WIZ3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRV_WIZ3>-ACTIVE = 1.
<HRV_WIZ3>-INACTIVE = 1.
<HRV_WIZ3>-HRFROMNUMBER = 1.
<HRV_WIZ3>-HRTONUMBER = 1.
<HRV_WIZ3>-HRNRLEVEL = 1.

ENDLOOP.

LOOP AT IT_HRV_WIZ3 INTO WA_HRV_WIZ3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRV_WIZ3-VKORG, sy-vline,
  WA_HRV_WIZ3-DESCR_VKORG, sy-vline,
  WA_HRV_WIZ3-VTWEG, sy-vline,
  WA_HRV_WIZ3-DESCR_VTWEG, sy-vline,
  WA_HRV_WIZ3-SPART, sy-vline,
  WA_HRV_WIZ3-DESCR_SPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRV_WIZ3 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_HRV_WIZ3 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_HRV_WIZ3 INTO WA_HRV_WIZ3.


*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 HRNRLEVEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRV_WIZ3-HRNRLEVEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRV_WIZ3-HRNRLEVEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_HRV_WIZ3-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRV_WIZ3-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field GUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_HRV_WIZ3-GUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRV_WIZ3-GUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CPD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRV_WIZ3-CPD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRV_WIZ3-CPD.
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_HRV_WIZ3_STR, 
ACTIVE TYPE STRING,
INACTIVE TYPE STRING,
HRFROMNUMBER TYPE STRING,
HRTONUMBER TYPE STRING,
HRNRLEVEL TYPE STRING,
VKORG TYPE STRING,
DESCR_VKORG TYPE STRING,
VTWEG TYPE STRING,
DESCR_VTWEG TYPE STRING,
SPART TYPE STRING,
DESCR_SPART TYPE STRING,
KTGRM TYPE STRING,
DESCR_KTGRM TYPE STRING,
WEGID TYPE STRING,
DESCR_WEGID TYPE STRING,
FKARA TYPE STRING,
DESCR_FKARA TYPE STRING,
AUART TYPE STRING,
DESCR_AUART TYPE STRING,
PSTYV TYPE STRING,
DESCR_PSTYV TYPE STRING,
COND TYPE STRING,
DESCR_COND TYPE STRING,
GKARA TYPE STRING,
DESCR_GKARA TYPE STRING,
GUART TYPE STRING,
DESCR_GUART TYPE STRING,
GPSTY TYPE STRING,
DESCR_GPSTY TYPE STRING,
LAND TYPE STRING,
DESCR_LAND TYPE STRING,
PRCTR TYPE STRING,
CPD TYPE STRING,
DESCR_CPD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRV_WIZ3_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_HRV_WIZ3_STR-ACTIVE sy-vline 
WA_HRV_WIZ3_STR-INACTIVE sy-vline 
WA_HRV_WIZ3_STR-HRFROMNUMBER sy-vline 
WA_HRV_WIZ3_STR-HRTONUMBER sy-vline 
WA_HRV_WIZ3_STR-HRNRLEVEL sy-vline 
WA_HRV_WIZ3_STR-VKORG sy-vline 
WA_HRV_WIZ3_STR-DESCR_VKORG sy-vline 
WA_HRV_WIZ3_STR-VTWEG sy-vline 
WA_HRV_WIZ3_STR-DESCR_VTWEG sy-vline 
WA_HRV_WIZ3_STR-SPART sy-vline 
WA_HRV_WIZ3_STR-DESCR_SPART sy-vline 
WA_HRV_WIZ3_STR-KTGRM sy-vline 
WA_HRV_WIZ3_STR-DESCR_KTGRM sy-vline 
WA_HRV_WIZ3_STR-WEGID sy-vline 
WA_HRV_WIZ3_STR-DESCR_WEGID sy-vline 
WA_HRV_WIZ3_STR-FKARA sy-vline 
WA_HRV_WIZ3_STR-DESCR_FKARA sy-vline 
WA_HRV_WIZ3_STR-AUART sy-vline 
WA_HRV_WIZ3_STR-DESCR_AUART sy-vline 
WA_HRV_WIZ3_STR-PSTYV sy-vline 
WA_HRV_WIZ3_STR-DESCR_PSTYV sy-vline 
WA_HRV_WIZ3_STR-COND sy-vline 
WA_HRV_WIZ3_STR-DESCR_COND sy-vline 
WA_HRV_WIZ3_STR-GKARA sy-vline 
WA_HRV_WIZ3_STR-DESCR_GKARA sy-vline 
WA_HRV_WIZ3_STR-GUART sy-vline 
WA_HRV_WIZ3_STR-DESCR_GUART sy-vline 
WA_HRV_WIZ3_STR-GPSTY sy-vline 
WA_HRV_WIZ3_STR-DESCR_GPSTY sy-vline 
WA_HRV_WIZ3_STR-LAND sy-vline 
WA_HRV_WIZ3_STR-DESCR_LAND sy-vline 
WA_HRV_WIZ3_STR-PRCTR sy-vline 
WA_HRV_WIZ3_STR-CPD sy-vline 
WA_HRV_WIZ3_STR-DESCR_CPD sy-vline      INTO ld_text SEPARATED BY SPACE.

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