ABAP Select data from SAP table VJHAMOTW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VJHAMOTW
*  INTO TABLE @DATA(IT_VJHAMOTW2).
*--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_VJHAMOTW INDEX 1 INTO DATA(WA_VJHAMOTW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VJHAMOTW>-MANDT = 1.
<VJHAMOTW>-AVM_NR = 1.
<VJHAMOTW>-MOTIV = 1.
<VJHAMOTW>-MOTIVSTAT = 1.
<VJHAMOTW>-NOTIZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VJHAMOTW-MOTIVID, sy-vline,
  WA_VJHAMOTW-VORL_AVMNR, sy-vline,
  WA_VJHAMOTW-VORL_MOTNR, sy-vline,
  WA_VJHAMOTW-VORL_TECID, sy-vline,
  WA_VJHAMOTW-WS_SENDFRM, sy-vline,
  WA_VJHAMOTW-WS_LENGTHS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VJHAMOTW 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_VJHAMOTW 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_VJHAMOTW INTO WA_VJHAMOTW.


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

*Conversion exit ALPHA, internal->external for field VORL_AVMNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VJHAMOTW-VORL_AVMNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VJHAMOTW-VORL_AVMNR.
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_VJHAMOTW_STR, 
MANDT TYPE STRING,
AVM_NR TYPE STRING,
MOTIV TYPE STRING,
MOTIVSTAT TYPE STRING,
NOTIZ TYPE STRING,
MOTIVID TYPE STRING,
VORL_AVMNR TYPE STRING,
VORL_MOTNR TYPE STRING,
VORL_TECID TYPE STRING,
WS_SENDFRM TYPE STRING,
WS_LENGTHS TYPE STRING,
WS_LENGTHI TYPE STRING,
STICHW TYPE STRING,
PRODH TYPE STRING,
MOTEXTINF1 TYPE STRING,
MOTEXTINF2 TYPE STRING,
MOTEXTINF3 TYPE STRING,
MOTEXTINF4 TYPE STRING,
XUVMOT TYPE STRING,
XMOTPROD TYPE STRING,
MERKMAL0 TYPE STRING,
MERKMAL1 TYPE STRING,
MERKMAL2 TYPE STRING,
MERKMAL3 TYPE STRING,
MERKMAL4 TYPE STRING,
MERKMAL5 TYPE STRING,
MERKMAL6 TYPE STRING,
MERKMAL7 TYPE STRING,
MERKMAL8 TYPE STRING,
MERKMAL9 TYPE STRING,
XSTORNIERT TYPE STRING,
XMOTIVTEXT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VJHAMOTW_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_VJHAMOTW_STR-MANDT sy-vline 
WA_VJHAMOTW_STR-AVM_NR sy-vline 
WA_VJHAMOTW_STR-MOTIV sy-vline 
WA_VJHAMOTW_STR-MOTIVSTAT sy-vline 
WA_VJHAMOTW_STR-NOTIZ sy-vline 
WA_VJHAMOTW_STR-MOTIVID sy-vline 
WA_VJHAMOTW_STR-VORL_AVMNR sy-vline 
WA_VJHAMOTW_STR-VORL_MOTNR sy-vline 
WA_VJHAMOTW_STR-VORL_TECID sy-vline 
WA_VJHAMOTW_STR-WS_SENDFRM sy-vline 
WA_VJHAMOTW_STR-WS_LENGTHS sy-vline 
WA_VJHAMOTW_STR-WS_LENGTHI sy-vline 
WA_VJHAMOTW_STR-STICHW sy-vline 
WA_VJHAMOTW_STR-PRODH sy-vline 
WA_VJHAMOTW_STR-MOTEXTINF1 sy-vline 
WA_VJHAMOTW_STR-MOTEXTINF2 sy-vline 
WA_VJHAMOTW_STR-MOTEXTINF3 sy-vline 
WA_VJHAMOTW_STR-MOTEXTINF4 sy-vline 
WA_VJHAMOTW_STR-XUVMOT sy-vline 
WA_VJHAMOTW_STR-XMOTPROD sy-vline 
WA_VJHAMOTW_STR-MERKMAL0 sy-vline 
WA_VJHAMOTW_STR-MERKMAL1 sy-vline 
WA_VJHAMOTW_STR-MERKMAL2 sy-vline 
WA_VJHAMOTW_STR-MERKMAL3 sy-vline 
WA_VJHAMOTW_STR-MERKMAL4 sy-vline 
WA_VJHAMOTW_STR-MERKMAL5 sy-vline 
WA_VJHAMOTW_STR-MERKMAL6 sy-vline 
WA_VJHAMOTW_STR-MERKMAL7 sy-vline 
WA_VJHAMOTW_STR-MERKMAL8 sy-vline 
WA_VJHAMOTW_STR-MERKMAL9 sy-vline 
WA_VJHAMOTW_STR-XSTORNIERT sy-vline 
WA_VJHAMOTW_STR-XMOTIVTEXT sy-vline 
WA_VJHAMOTW_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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