ABAP Select data from SAP table VN1CYSRVTPL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1CYSRVTPL 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 VN1CYSRVTPL. 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 VN1CYSRVTPL 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_VN1CYSRVTPL TYPE STANDARD TABLE OF VN1CYSRVTPL,
      WA_VN1CYSRVTPL TYPE VN1CYSRVTPL,
      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: <VN1CYSRVTPL> TYPE VN1CYSRVTPL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1CYSRVTPL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1CYSRVTPL
  INTO TABLE IT_VN1CYSRVTPL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1CYSRVTPL
*  INTO TABLE @DATA(IT_VN1CYSRVTPL2).
*--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_VN1CYSRVTPL INDEX 1 INTO DATA(WA_VN1CYSRVTPL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1CYSRVTPL ASSIGNING <VN1CYSRVTPL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1CYSRVTPL>-MANDT = 1.
<VN1CYSRVTPL>-CYSRVTPLID = 1.
<VN1CYSRVTPL>-LEIST = 1.
<VN1CYSRVTPL>-HAUST = 1.
<VN1CYSRVTPL>-EINRI = 1.

ENDLOOP.

LOOP AT IT_VN1CYSRVTPL INTO WA_VN1CYSRVTPL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1CYSRVTPL-LEITX, sy-vline,
  WA_VN1CYSRVTPL-IMENG, sy-vline,
  WA_VN1CYSRVTPL-NLSLOK, sy-vline,
  WA_VN1CYSRVTPL-ERGTX, sy-vline,
  WA_VN1CYSRVTPL-ERLTX, sy-vline,
  WA_VN1CYSRVTPL-PATNUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1CYSRVTPL 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_VN1CYSRVTPL 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_VN1CYSRVTPL INTO WA_VN1CYSRVTPL.


*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 LEIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1CYSRVTPL-LEIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1CYSRVTPL-LEIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HAUST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1CYSRVTPL-HAUST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1CYSRVTPL-HAUST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1CYSRVTPL-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1CYSRVTPL-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NLSLOK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1CYSRVTPL-NLSLOK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1CYSRVTPL-NLSLOK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TIME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VN1CYSRVTPL-TIME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1CYSRVTPL-TIME_UNIT.
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_VN1CYSRVTPL_STR, 
MANDT TYPE STRING,
CYSRVTPLID TYPE STRING,
LEIST TYPE STRING,
HAUST TYPE STRING,
EINRI TYPE STRING,
LEITX TYPE STRING,
IMENG TYPE STRING,
NLSLOK TYPE STRING,
ERGTX TYPE STRING,
ERLTX TYPE STRING,
PATNUE TYPE STRING,
PATEIN TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
END_DATE TYPE STRING,
END_TIME TYPE STRING,
DURATION TYPE STRING,
TIME_UNIT TYPE STRING,
MAXNO TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
UPUSR TYPE STRING,
STOKZ TYPE STRING,
STODAT TYPE STRING,
STOTIM TYPE STRING,
STOUSR TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1CYSRVTPL_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_VN1CYSRVTPL_STR-MANDT sy-vline 
WA_VN1CYSRVTPL_STR-CYSRVTPLID sy-vline 
WA_VN1CYSRVTPL_STR-LEIST sy-vline 
WA_VN1CYSRVTPL_STR-HAUST sy-vline 
WA_VN1CYSRVTPL_STR-EINRI sy-vline 
WA_VN1CYSRVTPL_STR-LEITX sy-vline 
WA_VN1CYSRVTPL_STR-IMENG sy-vline 
WA_VN1CYSRVTPL_STR-NLSLOK sy-vline 
WA_VN1CYSRVTPL_STR-ERGTX sy-vline 
WA_VN1CYSRVTPL_STR-ERLTX sy-vline 
WA_VN1CYSRVTPL_STR-PATNUE sy-vline 
WA_VN1CYSRVTPL_STR-PATEIN sy-vline 
WA_VN1CYSRVTPL_STR-START_DATE sy-vline 
WA_VN1CYSRVTPL_STR-START_TIME sy-vline 
WA_VN1CYSRVTPL_STR-END_DATE sy-vline 
WA_VN1CYSRVTPL_STR-END_TIME sy-vline 
WA_VN1CYSRVTPL_STR-DURATION sy-vline 
WA_VN1CYSRVTPL_STR-TIME_UNIT sy-vline 
WA_VN1CYSRVTPL_STR-MAXNO sy-vline 
WA_VN1CYSRVTPL_STR-ERDAT sy-vline 
WA_VN1CYSRVTPL_STR-ERTIM sy-vline 
WA_VN1CYSRVTPL_STR-ERUSR sy-vline 
WA_VN1CYSRVTPL_STR-UPDAT sy-vline 
WA_VN1CYSRVTPL_STR-UPTIM sy-vline 
WA_VN1CYSRVTPL_STR-UPUSR sy-vline 
WA_VN1CYSRVTPL_STR-STOKZ sy-vline 
WA_VN1CYSRVTPL_STR-STODAT sy-vline 
WA_VN1CYSRVTPL_STR-STOTIM sy-vline 
WA_VN1CYSRVTPL_STR-STOUSR sy-vline 
WA_VN1CYSRVTPL_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.