ABAP Select data from SAP table OBJNRSTA into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OBJNRSTA 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 OBJNRSTA. 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 OBJNRSTA 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_OBJNRSTA TYPE STANDARD TABLE OF OBJNRSTA,
      WA_OBJNRSTA TYPE OBJNRSTA,
      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: <OBJNRSTA> TYPE OBJNRSTA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OBJNRSTA
*  INTO TABLE @DATA(IT_OBJNRSTA2).
*--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_OBJNRSTA INDEX 1 INTO DATA(WA_OBJNRSTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OBJNRSTA>-FISCVAR = 1.
<OBJNRSTA>-FISCPER = 1.
<OBJNRSTA>-KOKRS = 1.
<OBJNRSTA>-OBJNR = 1.
<OBJNRSTA>-KOSTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OBJNRSTA-LSTAR, sy-vline,
  WA_OBJNRSTA-AUFNR, sy-vline,
  WA_OBJNRSTA-PRZNR, sy-vline,
  WA_OBJNRSTA-KSTRG, sy-vline,
  WA_OBJNRSTA-POSID, sy-vline,
  WA_OBJNRSTA-PKSTL_BUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OBJNRSTA 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_OBJNRSTA 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_OBJNRSTA INTO WA_OBJNRSTA.


*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 PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_OBJNRSTA-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OBJNRSTA-FISCPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit OBJEX, internal->external for field OBJNR
CALL FUNCTION 'CONVERSION_EXIT_OBJEX_OUTPUT'
  EXPORTING
    input =                      WA_OBJNRSTA-OBJNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OBJNRSTA-OBJNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_OBJNRSTA-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OBJNRSTA-POSID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_OBJNRSTA-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OBJNRSTA-MEINH.
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_OBJNRSTA_STR, 
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
KOKRS TYPE STRING,
OBJNR TYPE STRING,
KOSTL TYPE STRING,
LSTAR TYPE STRING,
AUFNR TYPE STRING,
PRZNR TYPE STRING,
KSTRG TYPE STRING,
POSID TYPE STRING,
PKSTL_BUE TYPE STRING,
CBRKE TYPE STRING,
CBRKI TYPE STRING,
CBART TYPE STRING,
DRVTP TYPE STRING,
STAGR TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
SSME TYPE STRING,
SSMED TYPE STRING,
MEINH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OBJNRSTA_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_OBJNRSTA_STR-FISCVAR sy-vline 
WA_OBJNRSTA_STR-FISCPER sy-vline 
WA_OBJNRSTA_STR-KOKRS sy-vline 
WA_OBJNRSTA_STR-OBJNR sy-vline 
WA_OBJNRSTA_STR-KOSTL sy-vline 
WA_OBJNRSTA_STR-LSTAR sy-vline 
WA_OBJNRSTA_STR-AUFNR sy-vline 
WA_OBJNRSTA_STR-PRZNR sy-vline 
WA_OBJNRSTA_STR-KSTRG sy-vline 
WA_OBJNRSTA_STR-POSID sy-vline 
WA_OBJNRSTA_STR-PKSTL_BUE sy-vline 
WA_OBJNRSTA_STR-CBRKE sy-vline 
WA_OBJNRSTA_STR-CBRKI sy-vline 
WA_OBJNRSTA_STR-CBART sy-vline 
WA_OBJNRSTA_STR-DRVTP sy-vline 
WA_OBJNRSTA_STR-STAGR sy-vline 
WA_OBJNRSTA_STR-WRTTP sy-vline 
WA_OBJNRSTA_STR-VERSN sy-vline 
WA_OBJNRSTA_STR-SSME sy-vline 
WA_OBJNRSTA_STR-SSMED sy-vline 
WA_OBJNRSTA_STR-MEINH sy-vline      INTO ld_text SEPARATED BY SPACE.

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