ABAP Select data from SAP table U_16957 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_16957 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_16957. 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_16957 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_16957 TYPE STANDARD TABLE OF U_16957,
      WA_U_16957 TYPE U_16957,
      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_16957> TYPE U_16957.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_16957.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_16957
  INTO TABLE IT_U_16957.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_16957
*  INTO TABLE @DATA(IT_U_169572).
*--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_16957 INDEX 1 INTO DATA(WA_U_169572).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_16957 ASSIGNING <U_16957>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_16957>-MANDT = 1.
<U_16957>-WERKS = 1.
<U_16957>-NAME1 = 1.
<U_16957>-NAME2 = 1.
<U_16957>-STRAS = 1.

ENDLOOP.

LOOP AT IT_U_16957 INTO WA_U_16957.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_16957-PFACH, sy-vline,
  WA_U_16957-PSTLZ, sy-vline,
  WA_U_16957-ORT01, sy-vline,
  WA_U_16957-ADRNR, sy-vline,
  WA_U_16957-BWKEY, sy-vline,
  WA_U_16957-FABKL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_16957 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_16957 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_16957 INTO WA_U_16957.


*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_16957-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16957-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_16957-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16957-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_16957-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16957-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_16957-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16957-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VERFE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_16957-VERFE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_16957-VERFE.
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_16957_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,
KUNNR TYPE STRING,
BZIRK TYPE STRING,
LIFNR TYPE STRING,
EROED TYPE STRING,
SCHLD TYPE STRING,
SPDAB TYPE STRING,
SPDBI TYPE STRING,
AUTOB TYPE STRING,
KOPRO TYPE STRING,
LAYVR TYPE STRING,
FLVAR TYPE STRING,
WANID TYPE STRING,
MOAB1 TYPE STRING,
MOBI1 TYPE STRING,
MOAB2 TYPE STRING,
MOBI2 TYPE STRING,
DIAB1 TYPE STRING,
DIBI1 TYPE STRING,
DIAB2 TYPE STRING,
DIBI2 TYPE STRING,
MIAB1 TYPE STRING,
MIBI1 TYPE STRING,
MIAB2 TYPE STRING,
MIBI2 TYPE STRING,
DOAB1 TYPE STRING,
DOBI1 TYPE STRING,
DOAB2 TYPE STRING,
DOBI2 TYPE STRING,
FRAB1 TYPE STRING,
FRBI1 TYPE STRING,
FRAB2 TYPE STRING,
FRBI2 TYPE STRING,
SAAB1 TYPE STRING,
SABI1 TYPE STRING,
SAAB2 TYPE STRING,
SABI2 TYPE STRING,
SOAB1 TYPE STRING,
SOBI1 TYPE STRING,
SOAB2 TYPE STRING,
SOBI2 TYPE STRING,
VERFL TYPE STRING,
VERFE TYPE STRING,
SPGR1 TYPE STRING,
INPRO TYPE STRING,
EKOAR TYPE STRING,
KZLIK TYPE STRING,
SPART TYPE STRING,
STFAK TYPE STRING,
BETRP TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
NLMATFB TYPE STRING,
BWWRK TYPE STRING,
BWVKO TYPE STRING,
BWVTW TYPE STRING,
BBPRO TYPE STRING,
VKBUR_WRK TYPE STRING,
VLFKZ2 TYPE STRING,
LSTFL TYPE STRING,
LIGRD TYPE STRING,
VKORG2 TYPE STRING,
VTWEG2 TYPE STRING,
DESROI TYPE STRING,
TIMINC TYPE STRING,
POSWS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_16957_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_16957_STR-MANDT sy-vline 
WA_U_16957_STR-WERKS sy-vline 
WA_U_16957_STR-NAME1 sy-vline 
WA_U_16957_STR-NAME2 sy-vline 
WA_U_16957_STR-STRAS sy-vline 
WA_U_16957_STR-PFACH sy-vline 
WA_U_16957_STR-PSTLZ sy-vline 
WA_U_16957_STR-ORT01 sy-vline 
WA_U_16957_STR-ADRNR sy-vline 
WA_U_16957_STR-BWKEY sy-vline 
WA_U_16957_STR-FABKL sy-vline 
WA_U_16957_STR-LAND1 sy-vline 
WA_U_16957_STR-KKOWK sy-vline 
WA_U_16957_STR-KORDB sy-vline 
WA_U_16957_STR-BEDPL sy-vline 
WA_U_16957_STR-CHAZV sy-vline 
WA_U_16957_STR-SPRAS sy-vline 
WA_U_16957_STR-VLFKZ sy-vline 
WA_U_16957_STR-REGIO sy-vline 
WA_U_16957_STR-COUNC sy-vline 
WA_U_16957_STR-CITYC sy-vline 
WA_U_16957_STR-TXJCD sy-vline 
WA_U_16957_STR-WKSOP sy-vline 
WA_U_16957_STR-AWSLS sy-vline 
WA_U_16957_STR-CHAZV_OLD sy-vline 
WA_U_16957_STR-TAXIW sy-vline 
WA_U_16957_STR-BZQHL sy-vline 
WA_U_16957_STR-LET01 sy-vline 
WA_U_16957_STR-LET02 sy-vline 
WA_U_16957_STR-LET03 sy-vline 
WA_U_16957_STR-TXNAM_MA1 sy-vline 
WA_U_16957_STR-TXNAM_MA2 sy-vline 
WA_U_16957_STR-TXNAM_MA3 sy-vline 
WA_U_16957_STR-BETOL sy-vline 
WA_U_16957_STR-J_1BBRANCH sy-vline 
WA_U_16957_STR-FPRFW sy-vline 
WA_U_16957_STR-ACHVM sy-vline 
WA_U_16957_STR-DVSART sy-vline 
WA_U_16957_STR-NODETYPE sy-vline 
WA_U_16957_STR-VKORG sy-vline 
WA_U_16957_STR-VTWEG sy-vline 
WA_U_16957_STR-KUNNR sy-vline 
WA_U_16957_STR-BZIRK sy-vline 
WA_U_16957_STR-LIFNR sy-vline 
WA_U_16957_STR-EROED sy-vline 
WA_U_16957_STR-SCHLD sy-vline 
WA_U_16957_STR-SPDAB sy-vline 
WA_U_16957_STR-SPDBI sy-vline 
WA_U_16957_STR-AUTOB sy-vline 
WA_U_16957_STR-KOPRO sy-vline 
WA_U_16957_STR-LAYVR sy-vline 
WA_U_16957_STR-FLVAR sy-vline 
WA_U_16957_STR-WANID sy-vline 
WA_U_16957_STR-MOAB1 sy-vline 
WA_U_16957_STR-MOBI1 sy-vline 
WA_U_16957_STR-MOAB2 sy-vline 
WA_U_16957_STR-MOBI2 sy-vline 
WA_U_16957_STR-DIAB1 sy-vline 
WA_U_16957_STR-DIBI1 sy-vline 
WA_U_16957_STR-DIAB2 sy-vline 
WA_U_16957_STR-DIBI2 sy-vline 
WA_U_16957_STR-MIAB1 sy-vline 
WA_U_16957_STR-MIBI1 sy-vline 
WA_U_16957_STR-MIAB2 sy-vline 
WA_U_16957_STR-MIBI2 sy-vline 
WA_U_16957_STR-DOAB1 sy-vline 
WA_U_16957_STR-DOBI1 sy-vline 
WA_U_16957_STR-DOAB2 sy-vline 
WA_U_16957_STR-DOBI2 sy-vline 
WA_U_16957_STR-FRAB1 sy-vline 
WA_U_16957_STR-FRBI1 sy-vline 
WA_U_16957_STR-FRAB2 sy-vline 
WA_U_16957_STR-FRBI2 sy-vline 
WA_U_16957_STR-SAAB1 sy-vline 
WA_U_16957_STR-SABI1 sy-vline 
WA_U_16957_STR-SAAB2 sy-vline 
WA_U_16957_STR-SABI2 sy-vline 
WA_U_16957_STR-SOAB1 sy-vline 
WA_U_16957_STR-SOBI1 sy-vline 
WA_U_16957_STR-SOAB2 sy-vline 
WA_U_16957_STR-SOBI2 sy-vline 
WA_U_16957_STR-VERFL sy-vline 
WA_U_16957_STR-VERFE sy-vline 
WA_U_16957_STR-SPGR1 sy-vline 
WA_U_16957_STR-INPRO sy-vline 
WA_U_16957_STR-EKOAR sy-vline 
WA_U_16957_STR-KZLIK sy-vline 
WA_U_16957_STR-SPART sy-vline 
WA_U_16957_STR-STFAK sy-vline 
WA_U_16957_STR-BETRP sy-vline 
WA_U_16957_STR-ERDAT sy-vline 
WA_U_16957_STR-ERNAM sy-vline 
WA_U_16957_STR-NLMATFB sy-vline 
WA_U_16957_STR-BWWRK sy-vline 
WA_U_16957_STR-BWVKO sy-vline 
WA_U_16957_STR-BWVTW sy-vline 
WA_U_16957_STR-BBPRO sy-vline 
WA_U_16957_STR-VKBUR_WRK sy-vline 
WA_U_16957_STR-VLFKZ2 sy-vline 
WA_U_16957_STR-LSTFL sy-vline 
WA_U_16957_STR-LIGRD sy-vline 
WA_U_16957_STR-VKORG2 sy-vline 
WA_U_16957_STR-VTWEG2 sy-vline 
WA_U_16957_STR-DESROI sy-vline 
WA_U_16957_STR-TIMINC sy-vline 
WA_U_16957_STR-POSWS sy-vline      INTO ld_text SEPARATED BY SPACE.

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