ABAP Select data from SAP table RNV2000_PAT_NAMES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNV2000_PAT_NAMES 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 RNV2000_PAT_NAMES. 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 RNV2000_PAT_NAMES 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_RNV2000_PAT_NAMES TYPE STANDARD TABLE OF RNV2000_PAT_NAMES,
      WA_RNV2000_PAT_NAMES TYPE RNV2000_PAT_NAMES,
      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: <RNV2000_PAT_NAMES> TYPE RNV2000_PAT_NAMES.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNV2000_PAT_NAMES.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNV2000_PAT_NAMES
  INTO TABLE IT_RNV2000_PAT_NAMES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNV2000_PAT_NAMES
*  INTO TABLE @DATA(IT_RNV2000_PAT_NAMES2).
*--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_RNV2000_PAT_NAMES INDEX 1 INTO DATA(WA_RNV2000_PAT_NAMES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNV2000_PAT_NAMES ASSIGNING <RNV2000_PAT_NAMES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNV2000_PAT_NAMES>-NNAME = 1.
<RNV2000_PAT_NAMES>-VNAME = 1.
<RNV2000_PAT_NAMES>-GBNAM = 1.
<RNV2000_PAT_NAMES>-GBDAT = 1.
<RNV2000_PAT_NAMES>-GSCHL = 1.

ENDLOOP.

LOOP AT IT_RNV2000_PAT_NAMES INTO WA_RNV2000_PAT_NAMES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNV2000_PAT_NAMES-TITEL, sy-vline,
  WA_RNV2000_PAT_NAMES-NAMZU, sy-vline,
  WA_RNV2000_PAT_NAMES-VORSW, sy-vline,
  WA_RNV2000_PAT_NAMES-ANRED, sy-vline,
  WA_RNV2000_PAT_NAMES-UNKNOWN_GBDAT, sy-vline,
  WA_RNV2000_PAT_NAMES-/ISHFR/BIRTHRK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNV2000_PAT_NAMES 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_RNV2000_PAT_NAMES 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_RNV2000_PAT_NAMES INTO WA_RNV2000_PAT_NAMES.


*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_RNV2000_PAT_NAMES_STR, 
NNAME TYPE STRING,
VNAME TYPE STRING,
GBNAM TYPE STRING,
GBDAT TYPE STRING,
GSCHL TYPE STRING,
TITEL TYPE STRING,
NAMZU TYPE STRING,
VORSW TYPE STRING,
ANRED TYPE STRING,
UNKNOWN_GBDAT TYPE STRING,
/ISHFR/BIRTHRK TYPE STRING,
NNAMEX TYPE STRING,
VNAMEX TYPE STRING,
GBNAMX TYPE STRING,
GBDATX TYPE STRING,
GSCHLX TYPE STRING,
TITELX TYPE STRING,
NAMZUX TYPE STRING,
VORSWX TYPE STRING,
ANREDX TYPE STRING,
UNKNOWN_GBDATX TYPE STRING,
/ISHFR/BIRTHRKX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNV2000_PAT_NAMES_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_RNV2000_PAT_NAMES_STR-NNAME sy-vline 
WA_RNV2000_PAT_NAMES_STR-VNAME sy-vline 
WA_RNV2000_PAT_NAMES_STR-GBNAM sy-vline 
WA_RNV2000_PAT_NAMES_STR-GBDAT sy-vline 
WA_RNV2000_PAT_NAMES_STR-GSCHL sy-vline 
WA_RNV2000_PAT_NAMES_STR-TITEL sy-vline 
WA_RNV2000_PAT_NAMES_STR-NAMZU sy-vline 
WA_RNV2000_PAT_NAMES_STR-VORSW sy-vline 
WA_RNV2000_PAT_NAMES_STR-ANRED sy-vline 
WA_RNV2000_PAT_NAMES_STR-UNKNOWN_GBDAT sy-vline 
WA_RNV2000_PAT_NAMES_STR-/ISHFR/BIRTHRK sy-vline 
WA_RNV2000_PAT_NAMES_STR-NNAMEX sy-vline 
WA_RNV2000_PAT_NAMES_STR-VNAMEX sy-vline 
WA_RNV2000_PAT_NAMES_STR-GBNAMX sy-vline 
WA_RNV2000_PAT_NAMES_STR-GBDATX sy-vline 
WA_RNV2000_PAT_NAMES_STR-GSCHLX sy-vline 
WA_RNV2000_PAT_NAMES_STR-TITELX sy-vline 
WA_RNV2000_PAT_NAMES_STR-NAMZUX sy-vline 
WA_RNV2000_PAT_NAMES_STR-VORSWX sy-vline 
WA_RNV2000_PAT_NAMES_STR-ANREDX sy-vline 
WA_RNV2000_PAT_NAMES_STR-UNKNOWN_GBDATX sy-vline 
WA_RNV2000_PAT_NAMES_STR-/ISHFR/BIRTHRKX sy-vline      INTO ld_text SEPARATED BY SPACE.

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