ABAP Select data from SAP table RECPOIVIRN02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RECPOIVIRN02 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 RECPOIVIRN02. 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 RECPOIVIRN02 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_RECPOIVIRN02 TYPE STANDARD TABLE OF RECPOIVIRN02,
      WA_RECPOIVIRN02 TYPE RECPOIVIRN02,
      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: <RECPOIVIRN02> TYPE RECPOIVIRN02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RECPOIVIRN02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RECPOIVIRN02
  INTO TABLE IT_RECPOIVIRN02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECPOIVIRN02
*  INTO TABLE @DATA(IT_RECPOIVIRN022).
*--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_RECPOIVIRN02 INDEX 1 INTO DATA(WA_RECPOIVIRN022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RECPOIVIRN02 ASSIGNING <RECPOIVIRN02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECPOIVIRN02>-SRNWLFDNUM = 1.
<RECPOIVIRN02>-NRNWSORTNB = 1.
<RECPOIVIRN02>-SRNWOPTION = 1.
<RECPOIVIRN02>-NRNWJHR = 1.
<RECPOIVIRN02>-NRNWMON = 1.

ENDLOOP.

LOOP AT IT_RECPOIVIRN02 INTO WA_RECPOIVIRN02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECPOIVIRN02-NRNWTAG, sy-vline,
  WA_RECPOIVIRN02-SRNWDAYRND, sy-vline,
  WA_RECPOIVIRN02-NAMTJHR, sy-vline,
  WA_RECPOIVIRN02-NAMTMON, sy-vline,
  WA_RECPOIVIRN02-NAMTTAG, sy-vline,
  WA_RECPOIVIRN02-SAMTDAYRND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECPOIVIRN02 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_RECPOIVIRN02 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_RECPOIVIRN02 INTO WA_RECPOIVIRN02.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RECPOIVIRN02_STR, 
SRNWLFDNUM TYPE STRING,
NRNWSORTNB TYPE STRING,
SRNWOPTION TYPE STRING,
NRNWJHR TYPE STRING,
NRNWMON TYPE STRING,
NRNWTAG TYPE STRING,
SRNWDAYRND TYPE STRING,
NAMTJHR TYPE STRING,
NAMTMON TYPE STRING,
NAMTTAG TYPE STRING,
SAMTDAYRND TYPE STRING,
DRNWDATE TYPE STRING,
DAMTDATE TYPE STRING,
DRNWACCOWN TYPE STRING,
DRNWACCPAR TYPE STRING,
DRNWOPTACT TYPE STRING,
JRNWDCTINP TYPE STRING,
XRNWINFTXT TYPE STRING,
SRNWSOURCE TYPE STRING,
XSRNWSOURCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECPOIVIRN02_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_RECPOIVIRN02_STR-SRNWLFDNUM sy-vline 
WA_RECPOIVIRN02_STR-NRNWSORTNB sy-vline 
WA_RECPOIVIRN02_STR-SRNWOPTION sy-vline 
WA_RECPOIVIRN02_STR-NRNWJHR sy-vline 
WA_RECPOIVIRN02_STR-NRNWMON sy-vline 
WA_RECPOIVIRN02_STR-NRNWTAG sy-vline 
WA_RECPOIVIRN02_STR-SRNWDAYRND sy-vline 
WA_RECPOIVIRN02_STR-NAMTJHR sy-vline 
WA_RECPOIVIRN02_STR-NAMTMON sy-vline 
WA_RECPOIVIRN02_STR-NAMTTAG sy-vline 
WA_RECPOIVIRN02_STR-SAMTDAYRND sy-vline 
WA_RECPOIVIRN02_STR-DRNWDATE sy-vline 
WA_RECPOIVIRN02_STR-DAMTDATE sy-vline 
WA_RECPOIVIRN02_STR-DRNWACCOWN sy-vline 
WA_RECPOIVIRN02_STR-DRNWACCPAR sy-vline 
WA_RECPOIVIRN02_STR-DRNWOPTACT sy-vline 
WA_RECPOIVIRN02_STR-JRNWDCTINP sy-vline 
WA_RECPOIVIRN02_STR-XRNWINFTXT sy-vline 
WA_RECPOIVIRN02_STR-SRNWSOURCE sy-vline 
WA_RECPOIVIRN02_STR-XSRNWSOURCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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