ABAP Select data from SAP table VN1MEORDSLDOSEA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1MEORDSLDOSEA 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 VN1MEORDSLDOSEA. 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 VN1MEORDSLDOSEA 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_VN1MEORDSLDOSEA TYPE STANDARD TABLE OF VN1MEORDSLDOSEA,
      WA_VN1MEORDSLDOSEA TYPE VN1MEORDSLDOSEA,
      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: <VN1MEORDSLDOSEA> TYPE VN1MEORDSLDOSEA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1MEORDSLDOSEA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1MEORDSLDOSEA
  INTO TABLE IT_VN1MEORDSLDOSEA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1MEORDSLDOSEA
*  INTO TABLE @DATA(IT_VN1MEORDSLDOSEA2).
*--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_VN1MEORDSLDOSEA INDEX 1 INTO DATA(WA_VN1MEORDSLDOSEA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1MEORDSLDOSEA ASSIGNING <VN1MEORDSLDOSEA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1MEORDSLDOSEA>-MANDT = 1.
<VN1MEORDSLDOSEA>-SLDOSEID = 1.
<VN1MEORDSLDOSEA>-MEORDID = 1.
<VN1MEORDSLDOSEA>-SEQID = 1.
<VN1MEORDSLDOSEA>-DOSE = 1.

ENDLOOP.

LOOP AT IT_VN1MEORDSLDOSEA INTO WA_VN1MEORDSLDOSEA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1MEORDSLDOSEA-RECAA, sy-vline,
  WA_VN1MEORDSLDOSEA-ZNR, sy-vline,
  WA_VN1MEORDSLDOSEA-DUR, sy-vline,
  WA_VN1MEORDSLDOSEA-BEGDAT, sy-vline,
  WA_VN1MEORDSLDOSEA-ERDAT, sy-vline,
  WA_VN1MEORDSLDOSEA-ERUSR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1MEORDSLDOSEA 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_VN1MEORDSLDOSEA 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_VN1MEORDSLDOSEA INTO WA_VN1MEORDSLDOSEA.


*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 MEQUA, internal->external for field DOSE
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-DOSE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-DOSE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field RECAA
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-RECAA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-RECAA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field DUR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-DUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-DUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field PDUR
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-PDUR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-PDUR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ME12D, internal->external for field DRUGASTR
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-DRUGASTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-DRUGASTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MEQUA, internal->external for field CMQUAN
CALL FUNCTION 'CONVERSION_EXIT_MEQUA_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-CMQUAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-CMQUAN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VN1MEORDSLDOSEA-CMU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1MEORDSLDOSEA-CMU.
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_VN1MEORDSLDOSEA_STR, 
MANDT TYPE STRING,
SLDOSEID TYPE STRING,
MEORDID TYPE STRING,
SEQID TYPE STRING,
DOSE TYPE STRING,
RECAA TYPE STRING,
ZNR TYPE STRING,
DUR TYPE STRING,
BEGDAT TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
DOSDEF TYPE STRING,
PDUR TYPE STRING,
PDURU TYPE STRING,
DRUGASTR TYPE STRING,
DRUGASTRU TYPE STRING,
CALCUD TYPE STRING,
CMQUAN TYPE STRING,
CMU TYPE STRING,
DC_USED TYPE STRING,
DCM TYPE STRING,
COMP_USED TYPE STRING,
COMP_TYPE TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1MEORDSLDOSEA_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_VN1MEORDSLDOSEA_STR-MANDT sy-vline 
WA_VN1MEORDSLDOSEA_STR-SLDOSEID sy-vline 
WA_VN1MEORDSLDOSEA_STR-MEORDID sy-vline 
WA_VN1MEORDSLDOSEA_STR-SEQID sy-vline 
WA_VN1MEORDSLDOSEA_STR-DOSE sy-vline 
WA_VN1MEORDSLDOSEA_STR-RECAA sy-vline 
WA_VN1MEORDSLDOSEA_STR-ZNR sy-vline 
WA_VN1MEORDSLDOSEA_STR-DUR sy-vline 
WA_VN1MEORDSLDOSEA_STR-BEGDAT sy-vline 
WA_VN1MEORDSLDOSEA_STR-ERDAT sy-vline 
WA_VN1MEORDSLDOSEA_STR-ERUSR sy-vline 
WA_VN1MEORDSLDOSEA_STR-UPDAT sy-vline 
WA_VN1MEORDSLDOSEA_STR-UPUSR sy-vline 
WA_VN1MEORDSLDOSEA_STR-DOSDEF sy-vline 
WA_VN1MEORDSLDOSEA_STR-PDUR sy-vline 
WA_VN1MEORDSLDOSEA_STR-PDURU sy-vline 
WA_VN1MEORDSLDOSEA_STR-DRUGASTR sy-vline 
WA_VN1MEORDSLDOSEA_STR-DRUGASTRU sy-vline 
WA_VN1MEORDSLDOSEA_STR-CALCUD sy-vline 
WA_VN1MEORDSLDOSEA_STR-CMQUAN sy-vline 
WA_VN1MEORDSLDOSEA_STR-CMU sy-vline 
WA_VN1MEORDSLDOSEA_STR-DC_USED sy-vline 
WA_VN1MEORDSLDOSEA_STR-DCM sy-vline 
WA_VN1MEORDSLDOSEA_STR-COMP_USED sy-vline 
WA_VN1MEORDSLDOSEA_STR-COMP_TYPE sy-vline 
WA_VN1MEORDSLDOSEA_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.