ABAP Select data from SAP table U_12443 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_12443 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 U_12443. 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 U_12443 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_U_12443 TYPE STANDARD TABLE OF U_12443,
      WA_U_12443 TYPE U_12443,
      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: <U_12443> TYPE U_12443.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_12443.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_12443
  INTO TABLE IT_U_12443.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_12443
*  INTO TABLE @DATA(IT_U_124432).
*--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_U_12443 INDEX 1 INTO DATA(WA_U_124432).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_12443 ASSIGNING <U_12443>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_12443>-MANDT = 1.
<U_12443>-LEDNR = 1.
<U_12443>-OBJNR = 1.
<U_12443>-POSIT = 1.
<U_12443>-TRGKZ = 1.

ENDLOOP.

LOOP AT IT_U_12443 INTO WA_U_12443.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_12443-WRTTP, sy-vline,
  WA_U_12443-GJAHR, sy-vline,
  WA_U_12443-GEBER, sy-vline,
  WA_U_12443-VERSN, sy-vline,
  WA_U_12443-VORGA, sy-vline,
  WA_U_12443-TWAER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_12443 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_U_12443 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_U_12443 INTO WA_U_12443.


*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 NUMCV, internal->external for field LEDNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_U_12443-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_12443-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WRTTP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_12443-WRTTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_12443-WRTTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_U_12443-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_12443-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_12443-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_12443-VERSN.
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_U_12443_STR, 
MANDT TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
POSIT TYPE STRING,
TRGKZ TYPE STRING,
WRTTP TYPE STRING,
GJAHR TYPE STRING,
GEBER TYPE STRING,
VERSN TYPE STRING,
VORGA TYPE STRING,
TWAER TYPE STRING,
PERBL TYPE STRING,
WTP01 TYPE STRING,
WTP02 TYPE STRING,
WTP03 TYPE STRING,
WTP04 TYPE STRING,
WTP05 TYPE STRING,
WTP06 TYPE STRING,
WTP07 TYPE STRING,
WTP08 TYPE STRING,
WTP09 TYPE STRING,
WTP10 TYPE STRING,
WTP11 TYPE STRING,
WTP12 TYPE STRING,
WTP13 TYPE STRING,
WTP14 TYPE STRING,
WTP15 TYPE STRING,
WTP16 TYPE STRING,
WLP01 TYPE STRING,
WLP02 TYPE STRING,
WLP03 TYPE STRING,
WLP04 TYPE STRING,
WLP05 TYPE STRING,
WLP06 TYPE STRING,
WLP07 TYPE STRING,
WLP08 TYPE STRING,
WLP09 TYPE STRING,
WLP10 TYPE STRING,
WLP11 TYPE STRING,
WLP12 TYPE STRING,
WLP13 TYPE STRING,
WLP14 TYPE STRING,
WLP15 TYPE STRING,
WLP16 TYPE STRING,
WTV01 TYPE STRING,
WTV02 TYPE STRING,
WTV03 TYPE STRING,
WTV04 TYPE STRING,
WTV05 TYPE STRING,
WTV06 TYPE STRING,
WTV07 TYPE STRING,
WTV08 TYPE STRING,
WTV09 TYPE STRING,
WTV10 TYPE STRING,
WTV11 TYPE STRING,
WTV12 TYPE STRING,
WTV13 TYPE STRING,
WTV14 TYPE STRING,
WTV15 TYPE STRING,
WTV16 TYPE STRING,
WLV01 TYPE STRING,
WLV02 TYPE STRING,
WLV03 TYPE STRING,
WLV04 TYPE STRING,
WLV05 TYPE STRING,
WLV06 TYPE STRING,
WLV07 TYPE STRING,
WLV08 TYPE STRING,
WLV09 TYPE STRING,
WLV10 TYPE STRING,
WLV11 TYPE STRING,
WLV12 TYPE STRING,
WLV13 TYPE STRING,
WLV14 TYPE STRING,
WLV15 TYPE STRING,
WLV16 TYPE STRING,
BELTP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_12443_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_U_12443_STR-MANDT sy-vline 
WA_U_12443_STR-LEDNR sy-vline 
WA_U_12443_STR-OBJNR sy-vline 
WA_U_12443_STR-POSIT sy-vline 
WA_U_12443_STR-TRGKZ sy-vline 
WA_U_12443_STR-WRTTP sy-vline 
WA_U_12443_STR-GJAHR sy-vline 
WA_U_12443_STR-GEBER sy-vline 
WA_U_12443_STR-VERSN sy-vline 
WA_U_12443_STR-VORGA sy-vline 
WA_U_12443_STR-TWAER sy-vline 
WA_U_12443_STR-PERBL sy-vline 
WA_U_12443_STR-WTP01 sy-vline 
WA_U_12443_STR-WTP02 sy-vline 
WA_U_12443_STR-WTP03 sy-vline 
WA_U_12443_STR-WTP04 sy-vline 
WA_U_12443_STR-WTP05 sy-vline 
WA_U_12443_STR-WTP06 sy-vline 
WA_U_12443_STR-WTP07 sy-vline 
WA_U_12443_STR-WTP08 sy-vline 
WA_U_12443_STR-WTP09 sy-vline 
WA_U_12443_STR-WTP10 sy-vline 
WA_U_12443_STR-WTP11 sy-vline 
WA_U_12443_STR-WTP12 sy-vline 
WA_U_12443_STR-WTP13 sy-vline 
WA_U_12443_STR-WTP14 sy-vline 
WA_U_12443_STR-WTP15 sy-vline 
WA_U_12443_STR-WTP16 sy-vline 
WA_U_12443_STR-WLP01 sy-vline 
WA_U_12443_STR-WLP02 sy-vline 
WA_U_12443_STR-WLP03 sy-vline 
WA_U_12443_STR-WLP04 sy-vline 
WA_U_12443_STR-WLP05 sy-vline 
WA_U_12443_STR-WLP06 sy-vline 
WA_U_12443_STR-WLP07 sy-vline 
WA_U_12443_STR-WLP08 sy-vline 
WA_U_12443_STR-WLP09 sy-vline 
WA_U_12443_STR-WLP10 sy-vline 
WA_U_12443_STR-WLP11 sy-vline 
WA_U_12443_STR-WLP12 sy-vline 
WA_U_12443_STR-WLP13 sy-vline 
WA_U_12443_STR-WLP14 sy-vline 
WA_U_12443_STR-WLP15 sy-vline 
WA_U_12443_STR-WLP16 sy-vline 
WA_U_12443_STR-WTV01 sy-vline 
WA_U_12443_STR-WTV02 sy-vline 
WA_U_12443_STR-WTV03 sy-vline 
WA_U_12443_STR-WTV04 sy-vline 
WA_U_12443_STR-WTV05 sy-vline 
WA_U_12443_STR-WTV06 sy-vline 
WA_U_12443_STR-WTV07 sy-vline 
WA_U_12443_STR-WTV08 sy-vline 
WA_U_12443_STR-WTV09 sy-vline 
WA_U_12443_STR-WTV10 sy-vline 
WA_U_12443_STR-WTV11 sy-vline 
WA_U_12443_STR-WTV12 sy-vline 
WA_U_12443_STR-WTV13 sy-vline 
WA_U_12443_STR-WTV14 sy-vline 
WA_U_12443_STR-WTV15 sy-vline 
WA_U_12443_STR-WTV16 sy-vline 
WA_U_12443_STR-WLV01 sy-vline 
WA_U_12443_STR-WLV02 sy-vline 
WA_U_12443_STR-WLV03 sy-vline 
WA_U_12443_STR-WLV04 sy-vline 
WA_U_12443_STR-WLV05 sy-vline 
WA_U_12443_STR-WLV06 sy-vline 
WA_U_12443_STR-WLV07 sy-vline 
WA_U_12443_STR-WLV08 sy-vline 
WA_U_12443_STR-WLV09 sy-vline 
WA_U_12443_STR-WLV10 sy-vline 
WA_U_12443_STR-WLV11 sy-vline 
WA_U_12443_STR-WLV12 sy-vline 
WA_U_12443_STR-WLV13 sy-vline 
WA_U_12443_STR-WLV14 sy-vline 
WA_U_12443_STR-WLV15 sy-vline 
WA_U_12443_STR-WLV16 sy-vline 
WA_U_12443_STR-BELTP sy-vline      INTO ld_text SEPARATED BY SPACE.

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