ABAP Select data from SAP table V_N2SAMPLE_LABOR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_N2SAMPLE_LABOR 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 V_N2SAMPLE_LABOR. 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 V_N2SAMPLE_LABOR 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_V_N2SAMPLE_LABOR TYPE STANDARD TABLE OF V_N2SAMPLE_LABOR,
      WA_V_N2SAMPLE_LABOR TYPE V_N2SAMPLE_LABOR,
      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: <V_N2SAMPLE_LABOR> TYPE V_N2SAMPLE_LABOR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_N2SAMPLE_LABOR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_N2SAMPLE_LABOR
  INTO TABLE IT_V_N2SAMPLE_LABOR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_N2SAMPLE_LABOR
*  INTO TABLE @DATA(IT_V_N2SAMPLE_LABOR2).
*--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_V_N2SAMPLE_LABOR INDEX 1 INTO DATA(WA_V_N2SAMPLE_LABOR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_N2SAMPLE_LABOR ASSIGNING <V_N2SAMPLE_LABOR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_N2SAMPLE_LABOR>-MANDT = 1.
<V_N2SAMPLE_LABOR>-DOKAR = 1.
<V_N2SAMPLE_LABOR>-DOKNR = 1.
<V_N2SAMPLE_LABOR>-DOKVR = 1.
<V_N2SAMPLE_LABOR>-DOKTL = 1.

ENDLOOP.

LOOP AT IT_V_N2SAMPLE_LABOR INTO WA_V_N2SAMPLE_LABOR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_N2SAMPLE_LABOR-MUSEQ, sy-vline,
  WA_V_N2SAMPLE_LABOR-N2LAEINRI, sy-vline,
  WA_V_N2SAMPLE_LABOR-N2LAPATNR, sy-vline,
  WA_V_N2SAMPLE_LABOR-N2LAFALNR, sy-vline,
  WA_V_N2SAMPLE_LABOR-N2LEISTID, sy-vline,
  WA_V_N2SAMPLE_LABOR-N2KATTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_N2SAMPLE_LABOR 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_V_N2SAMPLE_LABOR 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_V_N2SAMPLE_LABOR INTO WA_V_N2SAMPLE_LABOR.


*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 DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N2SAMPLE_LABOR-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N2SAMPLE_LABOR-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field N2LAEINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N2SAMPLE_LABOR-N2LAEINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N2SAMPLE_LABOR-N2LAEINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field N2LAPATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N2SAMPLE_LABOR-N2LAPATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N2SAMPLE_LABOR-N2LAPATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field N2LAFALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_N2SAMPLE_LABOR-N2LAFALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_N2SAMPLE_LABOR-N2LAFALNR.
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_V_N2SAMPLE_LABOR_STR, 
MANDT TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
MUSEQ TYPE STRING,
N2LAEINRI TYPE STRING,
N2LAPATNR TYPE STRING,
N2LAFALNR TYPE STRING,
N2LEISTID TYPE STRING,
N2KATTEXT TYPE STRING,
N2VALUE TYPE STRING,
N2UNIT TYPE STRING,
N2NORMAL TYPE STRING,
N2ABNORMAL TYPE STRING,
N2DATE TYPE STRING,
N2TIME TYPE STRING,
N2PRIORITY TYPE STRING,
N2VSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_N2SAMPLE_LABOR_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_V_N2SAMPLE_LABOR_STR-MANDT sy-vline 
WA_V_N2SAMPLE_LABOR_STR-DOKAR sy-vline 
WA_V_N2SAMPLE_LABOR_STR-DOKNR sy-vline 
WA_V_N2SAMPLE_LABOR_STR-DOKVR sy-vline 
WA_V_N2SAMPLE_LABOR_STR-DOKTL sy-vline 
WA_V_N2SAMPLE_LABOR_STR-MUSEQ sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2LAEINRI sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2LAPATNR sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2LAFALNR sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2LEISTID sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2KATTEXT sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2VALUE sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2UNIT sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2NORMAL sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2ABNORMAL sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2DATE sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2TIME sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2PRIORITY sy-vline 
WA_V_N2SAMPLE_LABOR_STR-N2VSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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