ABAP Select data from SAP table UPOS_NOBJ_SOURCE 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 UPOS_NOBJ_SOURCE 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 UPOS_NOBJ_SOURCE. 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 UPOS_NOBJ_SOURCE 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_UPOS_NOBJ_SOURCE TYPE STANDARD TABLE OF UPOS_NOBJ_SOURCE,
      WA_UPOS_NOBJ_SOURCE TYPE UPOS_NOBJ_SOURCE,
      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: <UPOS_NOBJ_SOURCE> TYPE UPOS_NOBJ_SOURCE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPOS_NOBJ_SOURCE
*  INTO TABLE @DATA(IT_UPOS_NOBJ_SOURCE2).
*--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_UPOS_NOBJ_SOURCE INDEX 1 INTO DATA(WA_UPOS_NOBJ_SOURCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPOS_NOBJ_SOURCE>-MANDT = 1.
<UPOS_NOBJ_SOURCE>-PN_STRNO = 1.
<UPOS_NOBJ_SOURCE>-DN_NO = 1.
<UPOS_NOBJ_SOURCE>-NODE_TYPE = 1.
<UPOS_NOBJ_SOURCE>-OBJ_STRNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPOS_NOBJ_SOURCE-MP, sy-vline,
  WA_UPOS_NOBJ_SOURCE-WELL, sy-vline,
  WA_UPOS_NOBJ_SOURCE-WC, sy-vline,
  WA_UPOS_NOBJ_SOURCE-FIELD, sy-vline,
  WA_UPOS_NOBJ_SOURCE-PLATFORM, sy-vline,
  WA_UPOS_NOBJ_SOURCE-RESERVOIR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPOS_NOBJ_SOURCE 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_UPOS_NOBJ_SOURCE 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_UPOS_NOBJ_SOURCE INTO WA_UPOS_NOBJ_SOURCE.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RESERVOIR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UPOS_NOBJ_SOURCE-RESERVOIR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPOS_NOBJ_SOURCE-RESERVOIR.
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_UPOS_NOBJ_SOURCE_STR, 
MANDT TYPE STRING,
PN_STRNO TYPE STRING,
DN_NO TYPE STRING,
NODE_TYPE TYPE STRING,
OBJ_STRNO TYPE STRING,
MP TYPE STRING,
WELL TYPE STRING,
WC TYPE STRING,
FIELD TYPE STRING,
PLATFORM TYPE STRING,
RESERVOIR TYPE STRING,
DATVA TYPE STRING,
ZEITA TYPE STRING,
DATVB TYPE STRING,
ZEITB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPOS_NOBJ_SOURCE_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_UPOS_NOBJ_SOURCE_STR-MANDT sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-PN_STRNO sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-DN_NO sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-NODE_TYPE sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-OBJ_STRNO sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-MP sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-WELL sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-WC sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-FIELD sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-PLATFORM sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-RESERVOIR sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-DATVA sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-ZEITA sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-DATVB sy-vline 
WA_UPOS_NOBJ_SOURCE_STR-ZEITB sy-vline      INTO ld_text SEPARATED BY SPACE.

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