ABAP Select data from SAP table VN1WVIEW_PG_DT into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1WVIEW_PG_DT 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 VN1WVIEW_PG_DT. 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 VN1WVIEW_PG_DT 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_VN1WVIEW_PG_DT TYPE STANDARD TABLE OF VN1WVIEW_PG_DT,
      WA_VN1WVIEW_PG_DT TYPE VN1WVIEW_PG_DT,
      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: <VN1WVIEW_PG_DT> TYPE VN1WVIEW_PG_DT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1WVIEW_PG_DT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1WVIEW_PG_DT
  INTO TABLE IT_VN1WVIEW_PG_DT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1WVIEW_PG_DT
*  INTO TABLE @DATA(IT_VN1WVIEW_PG_DT2).
*--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_VN1WVIEW_PG_DT INDEX 1 INTO DATA(WA_VN1WVIEW_PG_DT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1WVIEW_PG_DT ASSIGNING <VN1WVIEW_PG_DT>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1WVIEW_PG_DT>-MANDT = 1.
<VN1WVIEW_PG_DT>-VIEW_TYPE = 1.
<VN1WVIEW_PG_DT>-VIEWID = 1.
<VN1WVIEW_PG_DT>-VIEWNAM = 1.
<VN1WVIEW_PG_DT>-NRDAYS = 1.
ENDLOOP.

LOOP AT IT_VN1WVIEW_PG_DT INTO WA_VN1WVIEW_PG_DT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1WVIEW_PG_DT-DAY1, sy-vline,
WA_VN1WVIEW_PG_DT-MONDAY, sy-vline,
WA_VN1WVIEW_PG_DT-TUESDAY, sy-vline,
WA_VN1WVIEW_PG_DT-WEDNESDAY, sy-vline,
WA_VN1WVIEW_PG_DT-THURSDAY, sy-vline,
WA_VN1WVIEW_PG_DT-FRIDAY, sy-vline.
ENDLOOP. *Add any further fields from structure WA_VN1WVIEW_PG_DT 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_VN1WVIEW_PG_DT 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_VN1WVIEW_PG_DT INTO WA_VN1WVIEW_PG_DT. *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 VIEWNAM CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_VN1WVIEW_PG_DT-VIEWNAM IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_VN1WVIEW_PG_DT-VIEWNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DAY1 CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_VN1WVIEW_PG_DT-DAY1 IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_VN1WVIEW_PG_DT-DAY1.
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_VN1WVIEW_PG_DT_STR,
MANDT TYPE STRING,
VIEW_TYPE TYPE STRING,
VIEWID TYPE STRING,
VIEWNAM TYPE STRING,
NRDAYS TYPE STRING,
DAY1 TYPE STRING,
MONDAY TYPE STRING,
TUESDAY TYPE STRING,
WEDNESDAY TYPE STRING,
THURSDAY TYPE STRING,
FRIDAY TYPE STRING,
SATURDAY TYPE STRING,
SUNDAY TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR. DATA: WA_VN1WVIEW_PG_DT_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_VN1WVIEW_PG_DT_STR-MANDT sy-vline
WA_VN1WVIEW_PG_DT_STR-VIEW_TYPE sy-vline
WA_VN1WVIEW_PG_DT_STR-VIEWID sy-vline
WA_VN1WVIEW_PG_DT_STR-VIEWNAM sy-vline
WA_VN1WVIEW_PG_DT_STR-NRDAYS sy-vline
WA_VN1WVIEW_PG_DT_STR-DAY1 sy-vline
WA_VN1WVIEW_PG_DT_STR-MONDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-TUESDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-WEDNESDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-THURSDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-FRIDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-SATURDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-SUNDAY sy-vline
WA_VN1WVIEW_PG_DT_STR-ERDAT sy-vline
WA_VN1WVIEW_PG_DT_STR-ERUSR sy-vline
WA_VN1WVIEW_PG_DT_STR-UPDAT sy-vline
WA_VN1WVIEW_PG_DT_STR-UPUSR sy-vline
WA_VN1WVIEW_PG_DT_STR-STORN sy-vline
WA_VN1WVIEW_PG_DT_STR-STUSR sy-vline
WA_VN1WVIEW_PG_DT_STR-STDAT sy-vline
WA_VN1WVIEW_PG_DT_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.