ABAP Select data from SAP table VHUMIDT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VHUMIDT
*  INTO TABLE @DATA(IT_VHUMIDT2).
*--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_VHUMIDT INDEX 1 INTO DATA(WA_VHUMIDT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VHUMIDT>-VENUM = 1.
<VHUMIDT>-EXIDV = 1.
<VHUMIDT>-VEPOS = 1.
<VHUMIDT>-VELIN = 1.
<VHUMIDT>-VBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VHUMIDT-POSNR, sy-vline,
  WA_VHUMIDT-SUB_HU_VENUM, sy-vline,
  WA_VHUMIDT-SUB_HU_EXIDV, sy-vline,
  WA_VHUMIDT-QUANTITY, sy-vline,
  WA_VHUMIDT-VRKME, sy-vline,
  WA_VHUMIDT-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VHUMIDT 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_VHUMIDT 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_VHUMIDT INTO WA_VHUMIDT.


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

*Conversion exit ALPHA, internal->external for field EXIDV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-EXIDV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-EXIDV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUB_HU_VENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-SUB_HU_VENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-SUB_HU_VENUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SUB_HU_EXIDV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-SUB_HU_EXIDV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-SUB_HU_EXIDV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SONUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-SONUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-SONUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-QPLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEABM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-MEABM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-MEABM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POSEX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-POSEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-POSEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UEVEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-UEVEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-UEVEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-/CWM/VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-/CWM/VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMIDT-/CWM/VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMIDT-/CWM/VEMEH.
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_VHUMIDT_STR, 
VENUM TYPE STRING,
EXIDV TYPE STRING,
VEPOS TYPE STRING,
VELIN TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
SUB_HU_VENUM TYPE STRING,
SUB_HU_EXIDV TYPE STRING,
QUANTITY TYPE STRING,
VRKME TYPE STRING,
MEINS TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
BESTQ TYPE STRING,
SOBKZ TYPE STRING,
SONUM TYPE STRING,
LSONR TYPE STRING,
QPLOS TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
LAENG TYPE STRING,
BREIT TYPE STRING,
HOEHE TYPE STRING,
MEABM TYPE STRING,
MAGRV TYPE STRING,
KZBEI TYPE STRING,
VELTP TYPE STRING,
SELKZ TYPE STRING,
STATUS TYPE STRING,
SORTF1 TYPE STRING,
SORTF2 TYPE STRING,
SORTF3 TYPE STRING,
IDENT TYPE STRING,
IDART TYPE STRING,
HISTU TYPE STRING,
ARKTX TYPE STRING,
UMVKZ TYPE STRING,
UMVKN TYPE STRING,
UPDKZ TYPE STRING,
KZTRA TYPE STRING,
KZLIF TYPE STRING,
AENDB TYPE STRING,
AENDP TYPE STRING,
VPOBJ TYPE STRING,
VPOBJKEY TYPE STRING,
POSEX TYPE STRING,
LFIMG TYPE STRING,
MOREINFO TYPE STRING,
KZOBE TYPE STRING,
XCHAR TYPE STRING,
UEVEL TYPE STRING,
UMLGO TYPE STRING,
HU_LGORT TYPE STRING,
ANZSN TYPE STRING,
VFDAT TYPE STRING,
WDATU TYPE STRING,
SGT_SCAT TYPE STRING,
/CWM/QUANTITY TYPE STRING,
/CWM/VRKME TYPE STRING,
/CWM/VEMEH TYPE STRING,
/CWM/TMENG TYPE STRING,
WRF_CHARSTC1 TYPE STRING,
WRF_CHARSTC2 TYPE STRING,
WRF_CHARSTC3 TYPE STRING,
WRF_CHARSTC1_TXT TYPE STRING,
WRF_CHARSTC2_TXT TYPE STRING,
WRF_CHARSTC3_TXT TYPE STRING,
MATNR_TEXT TYPE STRING,
CHARG_TEXT TYPE STRING,
VHUMI_STAT TYPE STRING,
HU_COMPLETENESS TYPE STRING,
HU_SEQUENCE TYPE STRING,
HU_CONSUMPTION TYPE STRING,
VHUMI_OK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VHUMIDT_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_VHUMIDT_STR-VENUM sy-vline 
WA_VHUMIDT_STR-EXIDV sy-vline 
WA_VHUMIDT_STR-VEPOS sy-vline 
WA_VHUMIDT_STR-VELIN sy-vline 
WA_VHUMIDT_STR-VBELN sy-vline 
WA_VHUMIDT_STR-POSNR sy-vline 
WA_VHUMIDT_STR-SUB_HU_VENUM sy-vline 
WA_VHUMIDT_STR-SUB_HU_EXIDV sy-vline 
WA_VHUMIDT_STR-QUANTITY sy-vline 
WA_VHUMIDT_STR-VRKME sy-vline 
WA_VHUMIDT_STR-MEINS sy-vline 
WA_VHUMIDT_STR-MATNR sy-vline 
WA_VHUMIDT_STR-CHARG sy-vline 
WA_VHUMIDT_STR-WERKS sy-vline 
WA_VHUMIDT_STR-LGORT sy-vline 
WA_VHUMIDT_STR-BESTQ sy-vline 
WA_VHUMIDT_STR-SOBKZ sy-vline 
WA_VHUMIDT_STR-SONUM sy-vline 
WA_VHUMIDT_STR-LSONR sy-vline 
WA_VHUMIDT_STR-QPLOS sy-vline 
WA_VHUMIDT_STR-BRGEW sy-vline 
WA_VHUMIDT_STR-GEWEI sy-vline 
WA_VHUMIDT_STR-VOLUM sy-vline 
WA_VHUMIDT_STR-VOLEH sy-vline 
WA_VHUMIDT_STR-LAENG sy-vline 
WA_VHUMIDT_STR-BREIT sy-vline 
WA_VHUMIDT_STR-HOEHE sy-vline 
WA_VHUMIDT_STR-MEABM sy-vline 
WA_VHUMIDT_STR-MAGRV sy-vline 
WA_VHUMIDT_STR-KZBEI sy-vline 
WA_VHUMIDT_STR-VELTP sy-vline 
WA_VHUMIDT_STR-SELKZ sy-vline 
WA_VHUMIDT_STR-STATUS sy-vline 
WA_VHUMIDT_STR-SORTF1 sy-vline 
WA_VHUMIDT_STR-SORTF2 sy-vline 
WA_VHUMIDT_STR-SORTF3 sy-vline 
WA_VHUMIDT_STR-IDENT sy-vline 
WA_VHUMIDT_STR-IDART sy-vline 
WA_VHUMIDT_STR-HISTU sy-vline 
WA_VHUMIDT_STR-ARKTX sy-vline 
WA_VHUMIDT_STR-UMVKZ sy-vline 
WA_VHUMIDT_STR-UMVKN sy-vline 
WA_VHUMIDT_STR-UPDKZ sy-vline 
WA_VHUMIDT_STR-KZTRA sy-vline 
WA_VHUMIDT_STR-KZLIF sy-vline 
WA_VHUMIDT_STR-AENDB sy-vline 
WA_VHUMIDT_STR-AENDP sy-vline 
WA_VHUMIDT_STR-VPOBJ sy-vline 
WA_VHUMIDT_STR-VPOBJKEY sy-vline 
WA_VHUMIDT_STR-POSEX sy-vline 
WA_VHUMIDT_STR-LFIMG sy-vline 
WA_VHUMIDT_STR-MOREINFO sy-vline 
WA_VHUMIDT_STR-KZOBE sy-vline 
WA_VHUMIDT_STR-XCHAR sy-vline 
WA_VHUMIDT_STR-UEVEL sy-vline 
WA_VHUMIDT_STR-UMLGO sy-vline 
WA_VHUMIDT_STR-HU_LGORT sy-vline 
WA_VHUMIDT_STR-ANZSN sy-vline 
WA_VHUMIDT_STR-VFDAT sy-vline 
WA_VHUMIDT_STR-WDATU sy-vline 
WA_VHUMIDT_STR-SGT_SCAT sy-vline 
WA_VHUMIDT_STR-/CWM/QUANTITY sy-vline 
WA_VHUMIDT_STR-/CWM/VRKME sy-vline 
WA_VHUMIDT_STR-/CWM/VEMEH sy-vline 
WA_VHUMIDT_STR-/CWM/TMENG sy-vline 
WA_VHUMIDT_STR-WRF_CHARSTC1 sy-vline 
WA_VHUMIDT_STR-WRF_CHARSTC2 sy-vline 
WA_VHUMIDT_STR-WRF_CHARSTC3 sy-vline 
WA_VHUMIDT_STR-WRF_CHARSTC1_TXT sy-vline 
WA_VHUMIDT_STR-WRF_CHARSTC2_TXT sy-vline 
WA_VHUMIDT_STR-WRF_CHARSTC3_TXT sy-vline 
WA_VHUMIDT_STR-MATNR_TEXT sy-vline 
WA_VHUMIDT_STR-CHARG_TEXT sy-vline 
WA_VHUMIDT_STR-VHUMI_STAT sy-vline 
WA_VHUMIDT_STR-HU_COMPLETENESS sy-vline 
WA_VHUMIDT_STR-HU_SEQUENCE sy-vline 
WA_VHUMIDT_STR-HU_CONSUMPTION sy-vline 
WA_VHUMIDT_STR-VHUMI_OK sy-vline      INTO ld_text SEPARATED BY SPACE.

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