ABAP Select data from SAP table U_16622 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_16622 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_16622. 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_16622 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_16622 TYPE STANDARD TABLE OF U_16622,
      WA_U_16622 TYPE U_16622,
      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_16622> TYPE U_16622.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_16622.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_16622
  INTO TABLE IT_U_16622.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_16622
*  INTO TABLE @DATA(IT_U_166222).
*--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_16622 INDEX 1 INTO DATA(WA_U_166222).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_16622 ASSIGNING <U_16622>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_16622>-MANDT = 1.
<U_16622>-PACKNO = 1.
<U_16622>-INTROW = 1.
<U_16622>-EXTROW = 1.
<U_16622>-DEL = 1.

ENDLOOP.

LOOP AT IT_U_16622 INTO WA_U_16622.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_16622-SRVPOS, sy-vline,
  WA_U_16622-LBNUM, sy-vline,
  WA_U_16622-AUSGB, sy-vline,
  WA_U_16622-STLVPOS, sy-vline,
  WA_U_16622-EXTSRVNO, sy-vline,
  WA_U_16622-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_16622 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_16622 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_16622 INTO WA_U_16622.


*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 SRVPOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_16622-SRVPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16622-SRVPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_16622-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16622-MEINS.
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_16622_STR, 
MANDT TYPE STRING,
PACKNO TYPE STRING,
INTROW TYPE STRING,
EXTROW TYPE STRING,
DEL TYPE STRING,
SRVPOS TYPE STRING,
LBNUM TYPE STRING,
AUSGB TYPE STRING,
STLVPOS TYPE STRING,
EXTSRVNO TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
UEBTO TYPE STRING,
UEBTK TYPE STRING,
PEINH TYPE STRING,
BRTWR TYPE STRING,
NETWR TYPE STRING,
KTEXT1 TYPE STRING,
VRTKZ TYPE STRING,
TWRKZ TYPE STRING,
PERNR TYPE STRING,
MOLGA TYPE STRING,
LGART TYPE STRING,
LGTXT TYPE STRING,
STELL TYPE STRING,
IFTNR TYPE STRING,
BUDAT TYPE STRING,
INSDT TYPE STRING,
PLN_PACKNO TYPE STRING,
PLN_INTROW TYPE STRING,
KNT_PACKNO TYPE STRING,
KNT_INTROW TYPE STRING,
LIMIT_ROW TYPE STRING,
ACT_MENGE TYPE STRING,
ACT_WERT TYPE STRING,
KNT_WERT TYPE STRING,
KNT_MENGE TYPE STRING,
ZIELWERT TYPE STRING,
UNG_WERT TYPE STRING,
UNG_MENGE TYPE STRING,
ALT_INTROW TYPE STRING,
BASIC TYPE STRING,
ALTERNAT TYPE STRING,
BIDDER TYPE STRING,
SUPPLE TYPE STRING,
FREEQTY TYPE STRING,
INFORM TYPE STRING,
PAUSCH TYPE STRING,
EVENTUAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_16622_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_16622_STR-MANDT sy-vline 
WA_U_16622_STR-PACKNO sy-vline 
WA_U_16622_STR-INTROW sy-vline 
WA_U_16622_STR-EXTROW sy-vline 
WA_U_16622_STR-DEL sy-vline 
WA_U_16622_STR-SRVPOS sy-vline 
WA_U_16622_STR-LBNUM sy-vline 
WA_U_16622_STR-AUSGB sy-vline 
WA_U_16622_STR-STLVPOS sy-vline 
WA_U_16622_STR-EXTSRVNO sy-vline 
WA_U_16622_STR-MENGE sy-vline 
WA_U_16622_STR-MEINS sy-vline 
WA_U_16622_STR-UEBTO sy-vline 
WA_U_16622_STR-UEBTK sy-vline 
WA_U_16622_STR-PEINH sy-vline 
WA_U_16622_STR-BRTWR sy-vline 
WA_U_16622_STR-NETWR sy-vline 
WA_U_16622_STR-KTEXT1 sy-vline 
WA_U_16622_STR-VRTKZ sy-vline 
WA_U_16622_STR-TWRKZ sy-vline 
WA_U_16622_STR-PERNR sy-vline 
WA_U_16622_STR-MOLGA sy-vline 
WA_U_16622_STR-LGART sy-vline 
WA_U_16622_STR-LGTXT sy-vline 
WA_U_16622_STR-STELL sy-vline 
WA_U_16622_STR-IFTNR sy-vline 
WA_U_16622_STR-BUDAT sy-vline 
WA_U_16622_STR-INSDT sy-vline 
WA_U_16622_STR-PLN_PACKNO sy-vline 
WA_U_16622_STR-PLN_INTROW sy-vline 
WA_U_16622_STR-KNT_PACKNO sy-vline 
WA_U_16622_STR-KNT_INTROW sy-vline 
WA_U_16622_STR-LIMIT_ROW sy-vline 
WA_U_16622_STR-ACT_MENGE sy-vline 
WA_U_16622_STR-ACT_WERT sy-vline 
WA_U_16622_STR-KNT_WERT sy-vline 
WA_U_16622_STR-KNT_MENGE sy-vline 
WA_U_16622_STR-ZIELWERT sy-vline 
WA_U_16622_STR-UNG_WERT sy-vline 
WA_U_16622_STR-UNG_MENGE sy-vline 
WA_U_16622_STR-ALT_INTROW sy-vline 
WA_U_16622_STR-BASIC sy-vline 
WA_U_16622_STR-ALTERNAT sy-vline 
WA_U_16622_STR-BIDDER sy-vline 
WA_U_16622_STR-SUPPLE sy-vline 
WA_U_16622_STR-FREEQTY sy-vline 
WA_U_16622_STR-INFORM sy-vline 
WA_U_16622_STR-PAUSCH sy-vline 
WA_U_16622_STR-EVENTUAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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