ABAP Select data from SAP table CMWDLVPRO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMWDLVPRO
*  INTO TABLE @DATA(IT_CMWDLVPRO2).
*--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_CMWDLVPRO INDEX 1 INTO DATA(WA_CMWDLVPRO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMWDLVPRO>-HDRROWUUID = 1.
<CMWDLVPRO>-ROWUUID = 1.
<CMWDLVPRO>-SHPUUID = 1.
<CMWDLVPRO>-LOCUUID = 1.
<CMWDLVPRO>-MATUUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMWDLVPRO-VERSION, sy-vline,
  WA_CMWDLVPRO-SHP_ID, sy-vline,
  WA_CMWDLVPRO-DOC_TYPE, sy-vline,
  WA_CMWDLVPRO-DOC_ID, sy-vline,
  WA_CMWDLVPRO-DOC_POS_ID, sy-vline,
  WA_CMWDLVPRO-DOC_EXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMWDLVPRO 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_CMWDLVPRO 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_CMWDLVPRO INTO WA_CMWDLVPRO.


*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 CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMWDLVPRO-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMWDLVPRO-BASE_UOM.
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_CMWDLVPRO_STR, 
HDRROWUUID TYPE STRING,
ROWUUID TYPE STRING,
SHPUUID TYPE STRING,
LOCUUID TYPE STRING,
MATUUID TYPE STRING,
VERSION TYPE STRING,
SHP_ID TYPE STRING,
DOC_TYPE TYPE STRING,
DOC_ID TYPE STRING,
DOC_POS_ID TYPE STRING,
DOC_EXT TYPE STRING,
DOC_POS_EXT TYPE STRING,
QTY_SALES TYPE STRING,
QTY_BASE TYPE STRING,
BASE_UOM TYPE STRING,
BASE_ISO TYPE STRING,
NO_CHECK TYPE STRING,
MAT_ID TYPE STRING,
MAT_EXT TYPE STRING,
PLT_ID TYPE STRING,
PLT_LOC_TYPE TYPE STRING,
PLT_LOC_NO TYPE STRING,
MA_UTC TYPE STRING,
TP_UTC TYPE STRING,
LD_UTC TYPE STRING,
GI_UTC TYPE STRING,
DLV_UTC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMWDLVPRO_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_CMWDLVPRO_STR-HDRROWUUID sy-vline 
WA_CMWDLVPRO_STR-ROWUUID sy-vline 
WA_CMWDLVPRO_STR-SHPUUID sy-vline 
WA_CMWDLVPRO_STR-LOCUUID sy-vline 
WA_CMWDLVPRO_STR-MATUUID sy-vline 
WA_CMWDLVPRO_STR-VERSION sy-vline 
WA_CMWDLVPRO_STR-SHP_ID sy-vline 
WA_CMWDLVPRO_STR-DOC_TYPE sy-vline 
WA_CMWDLVPRO_STR-DOC_ID sy-vline 
WA_CMWDLVPRO_STR-DOC_POS_ID sy-vline 
WA_CMWDLVPRO_STR-DOC_EXT sy-vline 
WA_CMWDLVPRO_STR-DOC_POS_EXT sy-vline 
WA_CMWDLVPRO_STR-QTY_SALES sy-vline 
WA_CMWDLVPRO_STR-QTY_BASE sy-vline 
WA_CMWDLVPRO_STR-BASE_UOM sy-vline 
WA_CMWDLVPRO_STR-BASE_ISO sy-vline 
WA_CMWDLVPRO_STR-NO_CHECK sy-vline 
WA_CMWDLVPRO_STR-MAT_ID sy-vline 
WA_CMWDLVPRO_STR-MAT_EXT sy-vline 
WA_CMWDLVPRO_STR-PLT_ID sy-vline 
WA_CMWDLVPRO_STR-PLT_LOC_TYPE sy-vline 
WA_CMWDLVPRO_STR-PLT_LOC_NO sy-vline 
WA_CMWDLVPRO_STR-MA_UTC sy-vline 
WA_CMWDLVPRO_STR-TP_UTC sy-vline 
WA_CMWDLVPRO_STR-LD_UTC sy-vline 
WA_CMWDLVPRO_STR-GI_UTC sy-vline 
WA_CMWDLVPRO_STR-DLV_UTC sy-vline      INTO ld_text SEPARATED BY SPACE.

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