ABAP Select data from SAP table VHUMI_PGISSUE_QTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VHUMI_PGISSUE_QTY
*  INTO TABLE @DATA(IT_VHUMI_PGISSUE_QTY2).
*--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_VHUMI_PGISSUE_QTY INDEX 1 INTO DATA(WA_VHUMI_PGISSUE_QTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VHUMI_PGISSUE_QTY>-VENUM = 1.
<VHUMI_PGISSUE_QTY>-VELIN = 1.
<VHUMI_PGISSUE_QTY>-VEPOS = 1.
<VHUMI_PGISSUE_QTY>-MATNR = 1.
<VHUMI_PGISSUE_QTY>-CHARG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VHUMI_PGISSUE_QTY-MENGE, sy-vline,
  WA_VHUMI_PGISSUE_QTY-MEINS, sy-vline,
  WA_VHUMI_PGISSUE_QTY-VEMNG, sy-vline,
  WA_VHUMI_PGISSUE_QTY-VEMEH, sy-vline,
  WA_VHUMI_PGISSUE_QTY-UNVEL, sy-vline,
  WA_VHUMI_PGISSUE_QTY-UNEXIDV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VHUMI_PGISSUE_QTY 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_VHUMI_PGISSUE_QTY 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_VHUMI_PGISSUE_QTY INTO WA_VHUMI_PGISSUE_QTY.


*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_VHUMI_PGISSUE_QTY-VENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMI_PGISSUE_QTY-VENUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field /CWM/VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VHUMI_PGISSUE_QTY-/CWM/VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VHUMI_PGISSUE_QTY-/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_VHUMI_PGISSUE_QTY_STR, 
VENUM TYPE STRING,
VELIN TYPE STRING,
VEPOS TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
VEMNG TYPE STRING,
VEMEH TYPE STRING,
UNVEL TYPE STRING,
UNEXIDV TYPE STRING,
EXIDV TYPE STRING,
EXIDV_OB TYPE STRING,
TWFLG TYPE STRING,
/CWM/MENGE TYPE STRING,
/CWM/MEINS TYPE STRING,
/CWM/VEMNG TYPE STRING,
/CWM/VEMEH TYPE STRING,
WERKS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VHUMI_PGISSUE_QTY_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_VHUMI_PGISSUE_QTY_STR-VENUM sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-VELIN sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-VEPOS sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-MATNR sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-CHARG sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-MENGE sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-MEINS sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-VEMNG sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-VEMEH sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-UNVEL sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-UNEXIDV sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-EXIDV sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-EXIDV_OB sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-TWFLG sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-/CWM/MENGE sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-/CWM/MEINS sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-/CWM/VEMNG sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-/CWM/VEMEH sy-vline 
WA_VHUMI_PGISSUE_QTY_STR-WERKS sy-vline      INTO ld_text SEPARATED BY SPACE.

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