ABAP Select data from SAP table J_1UF_AN8_STRUCT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1UF_AN8_STRUCT 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 J_1UF_AN8_STRUCT. 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 J_1UF_AN8_STRUCT 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_J_1UF_AN8_STRUCT TYPE STANDARD TABLE OF J_1UF_AN8_STRUCT,
      WA_J_1UF_AN8_STRUCT TYPE J_1UF_AN8_STRUCT,
      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: <J_1UF_AN8_STRUCT> TYPE J_1UF_AN8_STRUCT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1UF_AN8_STRUCT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1UF_AN8_STRUCT
  INTO TABLE IT_J_1UF_AN8_STRUCT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1UF_AN8_STRUCT
*  INTO TABLE @DATA(IT_J_1UF_AN8_STRUCT2).
*--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_J_1UF_AN8_STRUCT INDEX 1 INTO DATA(WA_J_1UF_AN8_STRUCT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1UF_AN8_STRUCT ASSIGNING <J_1UF_AN8_STRUCT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1UF_AN8_STRUCT>-BUKRS = 1.
<J_1UF_AN8_STRUCT>-BELNR = 1.
<J_1UF_AN8_STRUCT>-GJAHR = 1.
<J_1UF_AN8_STRUCT>-BUDAT = 1.
<J_1UF_AN8_STRUCT>-BLDAT = 1.

ENDLOOP.

LOOP AT IT_J_1UF_AN8_STRUCT INTO WA_J_1UF_AN8_STRUCT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1UF_AN8_STRUCT-LIFNR, sy-vline,
  WA_J_1UF_AN8_STRUCT-XBLNR, sy-vline,
  WA_J_1UF_AN8_STRUCT-HWBAS, sy-vline,
  WA_J_1UF_AN8_STRUCT-HWBAS7, sy-vline,
  WA_J_1UF_AN8_STRUCT-HWBAS_MAIN_0, sy-vline,
  WA_J_1UF_AN8_STRUCT-HWSTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1UF_AN8_STRUCT 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_J_1UF_AN8_STRUCT 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_J_1UF_AN8_STRUCT INTO WA_J_1UF_AN8_STRUCT.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field HWBAS
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-HWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-HWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field HWBAS7
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-HWBAS7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-HWBAS7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field HWBAS_MAIN_0
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-HWBAS_MAIN_0
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-HWBAS_MAIN_0.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-HWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-HWSTE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE7
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-HWSTE7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-HWSTE7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE_MAIN_0
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_AN8_STRUCT-HWSTE_MAIN_0
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_AN8_STRUCT-HWSTE_MAIN_0.
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_J_1UF_AN8_STRUCT_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
LIFNR TYPE STRING,
XBLNR TYPE STRING,
HWBAS TYPE STRING,
HWBAS7 TYPE STRING,
HWBAS_MAIN_0 TYPE STRING,
HWSTE TYPE STRING,
HWSTE7 TYPE STRING,
HWSTE_MAIN_0 TYPE STRING,
XMLBAS TYPE STRING,
XMLBAS7 TYPE STRING,
XMLBAS_MAIN_0 TYPE STRING,
XMLSTE TYPE STRING,
XMLSTE7 TYPE STRING,
XMLSTE_MAIN_0 TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
NAME5 TYPE STRING,
NAME6 TYPE STRING,
NAME7 TYPE STRING,
NAME8 TYPE STRING,
NAME9 TYPE STRING,
NAME TYPE STRING,
STCD1 TYPE STRING,
R_DOCNUM_DATE TYPE STRING,
R_COMMENT TYPE STRING,
DOCNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1UF_AN8_STRUCT_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_J_1UF_AN8_STRUCT_STR-BUKRS sy-vline 
WA_J_1UF_AN8_STRUCT_STR-BELNR sy-vline 
WA_J_1UF_AN8_STRUCT_STR-GJAHR sy-vline 
WA_J_1UF_AN8_STRUCT_STR-BUDAT sy-vline 
WA_J_1UF_AN8_STRUCT_STR-BLDAT sy-vline 
WA_J_1UF_AN8_STRUCT_STR-LIFNR sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XBLNR sy-vline 
WA_J_1UF_AN8_STRUCT_STR-HWBAS sy-vline 
WA_J_1UF_AN8_STRUCT_STR-HWBAS7 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-HWBAS_MAIN_0 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-HWSTE sy-vline 
WA_J_1UF_AN8_STRUCT_STR-HWSTE7 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-HWSTE_MAIN_0 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XMLBAS sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XMLBAS7 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XMLBAS_MAIN_0 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XMLSTE sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XMLSTE7 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-XMLSTE_MAIN_0 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME1 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME2 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME3 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME4 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME5 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME6 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME7 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME8 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME9 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-NAME sy-vline 
WA_J_1UF_AN8_STRUCT_STR-STCD1 sy-vline 
WA_J_1UF_AN8_STRUCT_STR-R_DOCNUM_DATE sy-vline 
WA_J_1UF_AN8_STRUCT_STR-R_COMMENT sy-vline 
WA_J_1UF_AN8_STRUCT_STR-DOCNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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