ABAP Select data from SAP table U_16990 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_16990 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_16990. 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_16990 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_16990 TYPE STANDARD TABLE OF U_16990,
      WA_U_16990 TYPE U_16990,
      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_16990> TYPE U_16990.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_16990.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_16990
  INTO TABLE IT_U_16990.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_16990
*  INTO TABLE @DATA(IT_U_169902).
*--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_16990 INDEX 1 INTO DATA(WA_U_169902).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_16990 ASSIGNING <U_16990>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_16990>-MANDT = 1.
<U_16990>-WERKS = 1.
<U_16990>-NAME1 = 1.
<U_16990>-NAME2 = 1.
<U_16990>-STRAS = 1.

ENDLOOP.

LOOP AT IT_U_16990 INTO WA_U_16990.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_16990-PFACH, sy-vline,
  WA_U_16990-PSTLZ, sy-vline,
  WA_U_16990-ORT01, sy-vline,
  WA_U_16990-ADRNR, sy-vline,
  WA_U_16990-BWKEY, sy-vline,
  WA_U_16990-FABKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_16990 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_16990 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_16990 INTO WA_U_16990.


*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 ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_16990-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16990-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_16990-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16990-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_16990-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16990-LIFNR.
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_16990_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
ADRNR TYPE STRING,
BWKEY TYPE STRING,
FABKL TYPE STRING,
LAND1 TYPE STRING,
KKOWK TYPE STRING,
KORDB TYPE STRING,
BEDPL TYPE STRING,
CHAZV TYPE STRING,
SPRAS TYPE STRING,
VLFKZ TYPE STRING,
REGIO TYPE STRING,
COUNC TYPE STRING,
CITYC TYPE STRING,
TXJCD TYPE STRING,
WKSOP TYPE STRING,
AWSLS TYPE STRING,
CHAZV_OLD TYPE STRING,
TAXIW TYPE STRING,
BZQHL TYPE STRING,
LET01 TYPE STRING,
LET02 TYPE STRING,
LET03 TYPE STRING,
TXNAM_MA1 TYPE STRING,
TXNAM_MA2 TYPE STRING,
TXNAM_MA3 TYPE STRING,
BETOL TYPE STRING,
J_1BBRANCH TYPE STRING,
FPRFW TYPE STRING,
ACHVM TYPE STRING,
DVSART TYPE STRING,
NODETYPE TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
BZIRK TYPE STRING,
LIFNR TYPE STRING,
VTBFI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_16990_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_16990_STR-MANDT sy-vline 
WA_U_16990_STR-WERKS sy-vline 
WA_U_16990_STR-NAME1 sy-vline 
WA_U_16990_STR-NAME2 sy-vline 
WA_U_16990_STR-STRAS sy-vline 
WA_U_16990_STR-PFACH sy-vline 
WA_U_16990_STR-PSTLZ sy-vline 
WA_U_16990_STR-ORT01 sy-vline 
WA_U_16990_STR-ADRNR sy-vline 
WA_U_16990_STR-BWKEY sy-vline 
WA_U_16990_STR-FABKL sy-vline 
WA_U_16990_STR-LAND1 sy-vline 
WA_U_16990_STR-KKOWK sy-vline 
WA_U_16990_STR-KORDB sy-vline 
WA_U_16990_STR-BEDPL sy-vline 
WA_U_16990_STR-CHAZV sy-vline 
WA_U_16990_STR-SPRAS sy-vline 
WA_U_16990_STR-VLFKZ sy-vline 
WA_U_16990_STR-REGIO sy-vline 
WA_U_16990_STR-COUNC sy-vline 
WA_U_16990_STR-CITYC sy-vline 
WA_U_16990_STR-TXJCD sy-vline 
WA_U_16990_STR-WKSOP sy-vline 
WA_U_16990_STR-AWSLS sy-vline 
WA_U_16990_STR-CHAZV_OLD sy-vline 
WA_U_16990_STR-TAXIW sy-vline 
WA_U_16990_STR-BZQHL sy-vline 
WA_U_16990_STR-LET01 sy-vline 
WA_U_16990_STR-LET02 sy-vline 
WA_U_16990_STR-LET03 sy-vline 
WA_U_16990_STR-TXNAM_MA1 sy-vline 
WA_U_16990_STR-TXNAM_MA2 sy-vline 
WA_U_16990_STR-TXNAM_MA3 sy-vline 
WA_U_16990_STR-BETOL sy-vline 
WA_U_16990_STR-J_1BBRANCH sy-vline 
WA_U_16990_STR-FPRFW sy-vline 
WA_U_16990_STR-ACHVM sy-vline 
WA_U_16990_STR-DVSART sy-vline 
WA_U_16990_STR-NODETYPE sy-vline 
WA_U_16990_STR-VKORG sy-vline 
WA_U_16990_STR-VTWEG sy-vline 
WA_U_16990_STR-SPART sy-vline 
WA_U_16990_STR-BZIRK sy-vline 
WA_U_16990_STR-LIFNR sy-vline 
WA_U_16990_STR-VTBFI sy-vline      INTO ld_text SEPARATED BY SPACE.

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