ABAP Select data from SAP table /SAPSLL/CUWL_UI_ALV_02_S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPSLL/CUWL_UI_ALV_02_S 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 /SAPSLL/CUWL_UI_ALV_02_S. 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 /SAPSLL/CUWL_UI_ALV_02_S 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_/SAPSLL/CUWL_UI_ALV_02_S TYPE STANDARD TABLE OF /SAPSLL/CUWL_UI_ALV_02_S,
      WA_/SAPSLL/CUWL_UI_ALV_02_S TYPE /SAPSLL/CUWL_UI_ALV_02_S,
      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: </SAPSLL/CUWL_UI_ALV_02_S> TYPE /SAPSLL/CUWL_UI_ALV_02_S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPSLL/CUWL_UI_ALV_02_S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPSLL/CUWL_UI_ALV_02_S
  INTO TABLE IT_/SAPSLL/CUWL_UI_ALV_02_S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPSLL/CUWL_UI_ALV_02_S
*  INTO TABLE @DATA(IT_/SAPSLL/CUWL_UI_ALV_02_S2).
*--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_/SAPSLL/CUWL_UI_ALV_02_S INDEX 1 INTO DATA(WA_/SAPSLL/CUWL_UI_ALV_02_S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPSLL/CUWL_UI_ALV_02_S ASSIGNING </SAPSLL/CUWL_UI_ALV_02_S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPSLL/CUWL_UI_ALV_02_S>-CORDER = 1.
</SAPSLL/CUWL_UI_ALV_02_S>-COYEAR = 1.
</SAPSLL/CUWL_UI_ALV_02_S>-MDDNO = 1.
</SAPSLL/CUWL_UI_ALV_02_S>-MDDYR = 1.
</SAPSLL/CUWL_UI_ALV_02_S>-MDDIN = 1.

ENDLOOP.

LOOP AT IT_/SAPSLL/CUWL_UI_ALV_02_S INTO WA_/SAPSLL/CUWL_UI_ALV_02_S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDSY, sy-vline,
  WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDAP, sy-vline,
  WA_/SAPSLL/CUWL_UI_ALV_02_S-CREFT, sy-vline,
  WA_/SAPSLL/CUWL_UI_ALV_02_S-CREFN, sy-vline,
  WA_/SAPSLL/CUWL_UI_ALV_02_S-PRVSY, sy-vline,
  WA_/SAPSLL/CUWL_UI_ALV_02_S-PRTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPSLL/CUWL_UI_ALV_02_S 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_/SAPSLL/CUWL_UI_ALV_02_S 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_/SAPSLL/CUWL_UI_ALV_02_S INTO WA_/SAPSLL/CUWL_UI_ALV_02_S.


*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 CORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-CORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-CORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MDDNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MDDYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDYR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MDDIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MDDSY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDSY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-MDDSY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SLLPR, internal->external for field PRVSY
CALL FUNCTION 'CONVERSION_EXIT_SLLPR_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-PRVSY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-PRVSY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BAUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-BAUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-BAUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MDWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-MDWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-MDWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PODNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-PODNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-PODNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PODIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-PODIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-PODIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PODSY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-PODSY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-PODSY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DLDNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-DLDNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-DLDNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DLDIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-DLDIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-DLDIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DLDSY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-DLDSY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-DLDSY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SLLTS, internal->external for field MDCDT
CALL FUNCTION 'CONVERSION_EXIT_SLLTS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-MDCDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-MDCDT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARVD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-PARVD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-PARVD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARGS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSLL/CUWL_UI_ALV_02_S-PARGS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSLL/CUWL_UI_ALV_02_S-PARGS.
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_/SAPSLL/CUWL_UI_ALV_02_S_STR, 
CORDER TYPE STRING,
COYEAR TYPE STRING,
MDDNO TYPE STRING,
MDDYR TYPE STRING,
MDDIN TYPE STRING,
MDDSY TYPE STRING,
MDDAP TYPE STRING,
CREFT TYPE STRING,
CREFN TYPE STRING,
PRVSY TYPE STRING,
PRTXT TYPE STRING,
MDBUQ TYPE STRING,
BAUOM TYPE STRING,
MDWGR TYPE STRING,
MDWNT TYPE STRING,
MDWEI TYPE STRING,
PODNO TYPE STRING,
PODIN TYPE STRING,
PODSY TYPE STRING,
PODAP TYPE STRING,
POOBJ TYPE STRING,
DLDNO TYPE STRING,
DLDIN TYPE STRING,
DLDSY TYPE STRING,
DLDAP TYPE STRING,
DLOBJ TYPE STRING,
MDDDT TYPE STRING,
MDPDT TYPE STRING,
MDCDT TYPE STRING,
PARVD TYPE STRING,
PARGS TYPE STRING,
INCOT TYPE STRING,
INCOLO TYPE STRING,
CUPRO TYPE STRING,
CUCOO TYPE STRING,
IDGDS TYPE STRING,
ADDDA0 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPSLL/CUWL_UI_ALV_02_S_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_/SAPSLL/CUWL_UI_ALV_02_S_STR-CORDER sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-COYEAR sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDDNO sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDDYR sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDDIN sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDDSY sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDDAP sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-CREFT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-CREFN sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PRVSY sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PRTXT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDBUQ sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-BAUOM sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDWGR sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDWNT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDWEI sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PODNO sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PODIN sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PODSY sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PODAP sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-POOBJ sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-DLDNO sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-DLDIN sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-DLDSY sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-DLDAP sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-DLOBJ sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDDDT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDPDT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-MDCDT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PARVD sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-PARGS sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-INCOT sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-INCOLO sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-CUPRO sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-CUCOO sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-IDGDS sy-vline 
WA_/SAPSLL/CUWL_UI_ALV_02_S_STR-ADDDA0 sy-vline      INTO ld_text SEPARATED BY SPACE.

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