ABAP Select data from SAP table LTR2_S_RN_NROBJ_DATA2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LTR2_S_RN_NROBJ_DATA2 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 LTR2_S_RN_NROBJ_DATA2. 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 LTR2_S_RN_NROBJ_DATA2 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_LTR2_S_RN_NROBJ_DATA2 TYPE STANDARD TABLE OF LTR2_S_RN_NROBJ_DATA2,
      WA_LTR2_S_RN_NROBJ_DATA2 TYPE LTR2_S_RN_NROBJ_DATA2,
      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: <LTR2_S_RN_NROBJ_DATA2> TYPE LTR2_S_RN_NROBJ_DATA2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LTR2_S_RN_NROBJ_DATA2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LTR2_S_RN_NROBJ_DATA2
  INTO TABLE IT_LTR2_S_RN_NROBJ_DATA2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LTR2_S_RN_NROBJ_DATA2
*  INTO TABLE @DATA(IT_LTR2_S_RN_NROBJ_DATA22).
*--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_LTR2_S_RN_NROBJ_DATA2 INDEX 1 INTO DATA(WA_LTR2_S_RN_NROBJ_DATA22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LTR2_S_RN_NROBJ_DATA2 ASSIGNING <LTR2_S_RN_NROBJ_DATA2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LTR2_S_RN_NROBJ_DATA2>-OBJECT = 1.
<LTR2_S_RN_NROBJ_DATA2>-SUBOBJECT = 1.
<LTR2_S_RN_NROBJ_DATA2>-NRRANGENR = 1.
<LTR2_S_RN_NROBJ_DATA2>-TOYEAR = 1.
<LTR2_S_RN_NROBJ_DATA2>-EXTERNIND = 1.

ENDLOOP.

LOOP AT IT_LTR2_S_RN_NROBJ_DATA2 INTO WA_LTR2_S_RN_NROBJ_DATA2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LTR2_S_RN_NROBJ_DATA2-NR_STATE, sy-vline,
  WA_LTR2_S_RN_NROBJ_DATA2-NRLEVEL_STATE, sy-vline,
  WA_LTR2_S_RN_NROBJ_DATA2-STATE_DESC, sy-vline,
  WA_LTR2_S_RN_NROBJ_DATA2-MAP_MODE, sy-vline,
  WA_LTR2_S_RN_NROBJ_DATA2-MAP_BUILT, sy-vline,
  WA_LTR2_S_RN_NROBJ_DATA2-USED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LTR2_S_RN_NROBJ_DATA2 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_LTR2_S_RN_NROBJ_DATA2 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_LTR2_S_RN_NROBJ_DATA2 INTO WA_LTR2_S_RN_NROBJ_DATA2.


*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 GJAHR, internal->external for field TOYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_LTR2_S_RN_NROBJ_DATA2-TOYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LTR2_S_RN_NROBJ_DATA2-TOYEAR.
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_LTR2_S_RN_NROBJ_DATA2_STR, 
OBJECT TYPE STRING,
SUBOBJECT TYPE STRING,
NRRANGENR TYPE STRING,
TOYEAR TYPE STRING,
EXTERNIND TYPE STRING,
NR_STATE TYPE STRING,
NRLEVEL_STATE TYPE STRING,
STATE_DESC TYPE STRING,
MAP_MODE TYPE STRING,
MAP_BUILT TYPE STRING,
USED TYPE STRING,
ADJUST_MODE TYPE STRING,
CHK_STATUS TYPE STRING,
INVALID_NUM_STATUS TYPE STRING,
TOL_OFFSET TYPE STRING,
ADJUST_NUM TYPE STRING,
ADJUST_VALUE TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
FROMNUMBER TYPE STRING,
TONUMBER TYPE STRING,
SNDNRLEVEL TYPE STRING,
RCVNRLEVEL TYPE STRING,
DEVCLASS TYPE STRING,
NROTXT TYPE STRING,
RCVLEVELBM TYPE STRING,
ANA_USED_NO TYPE STRING,
APPL_TABLE_ANALYZED TYPE STRING,
LOG_FLAG TYPE STRING,
PROC_MODE TYPE STRING,
PROC_PARAM TYPE STRING,
AUTO_CREATE TYPE STRING,
SOURCE TYPE STRING,
ADJUST_VALUE_REC TYPE STRING,
ADJUST_STATUS TYPE STRING,
ADJUST_EXT_VAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LTR2_S_RN_NROBJ_DATA2_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_LTR2_S_RN_NROBJ_DATA2_STR-OBJECT sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-SUBOBJECT sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-NRRANGENR sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-TOYEAR sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-EXTERNIND sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-NR_STATE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-NRLEVEL_STATE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-STATE_DESC sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-MAP_MODE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-MAP_BUILT sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-USED sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ADJUST_MODE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-CHK_STATUS sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-INVALID_NUM_STATUS sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-TOL_OFFSET sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ADJUST_NUM sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ADJUST_VALUE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-TABNAME sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-FIELDNAME sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-FROMNUMBER sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-TONUMBER sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-SNDNRLEVEL sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-RCVNRLEVEL sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-DEVCLASS sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-NROTXT sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-RCVLEVELBM sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ANA_USED_NO sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-APPL_TABLE_ANALYZED sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-LOG_FLAG sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-PROC_MODE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-PROC_PARAM sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-AUTO_CREATE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-SOURCE sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ADJUST_VALUE_REC sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ADJUST_STATUS sy-vline 
WA_LTR2_S_RN_NROBJ_DATA2_STR-ADJUST_EXT_VAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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