ABAP Select data from SAP table CEWMWTOVPQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEWMWTOVPQ
*  INTO TABLE @DATA(IT_CEWMWTOVPQ2).
*--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_CEWMWTOVPQ INDEX 1 INTO DATA(WA_CEWMWTOVPQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEWMWTOVPQ>-MANDT = 1.
<CEWMWTOVPQ>-WAREHOUSE = 1.
<CEWMWTOVPQ>-WAREHOUSETASK = 1.
<CEWMWTOVPQ>-WAREHOUSETASKITEM = 1.
<CEWMWTOVPQ>-WAREHOUSENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEWMWTOVPQ-WAREHOUSEPROCESSTYPE, sy-vline,
  WA_CEWMWTOVPQ-WAREHOUSEPROCESSTYPENAME, sy-vline,
  WA_CEWMWTOVPQ-WAREHOUSEPROCESSCATEGORY, sy-vline,
  WA_CEWMWTOVPQ-WAREHOUSEPROCESSCATEGORYNAME, sy-vline,
  WA_CEWMWTOVPQ-WAREHOUSETASKSTATUS, sy-vline,
  WA_CEWMWTOVPQ-WAREHOUSETASKSTATUSNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEWMWTOVPQ 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_CEWMWTOVPQ 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_CEWMWTOVPQ INTO WA_CEWMWTOVPQ.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CEWMWTOVPQ_STR, 
MANDT TYPE STRING,
WAREHOUSE TYPE STRING,
WAREHOUSETASK TYPE STRING,
WAREHOUSETASKITEM TYPE STRING,
WAREHOUSENAME TYPE STRING,
WAREHOUSEPROCESSTYPE TYPE STRING,
WAREHOUSEPROCESSTYPENAME TYPE STRING,
WAREHOUSEPROCESSCATEGORY TYPE STRING,
WAREHOUSEPROCESSCATEGORYNAME TYPE STRING,
WAREHOUSETASKSTATUS TYPE STRING,
WAREHOUSETASKSTATUSNAME TYPE STRING,
ACTIVITYAREA TYPE STRING,
ACTIVITYAREANAME TYPE STRING,
ISHANDLINGUNITWAREHOUSETASK TYPE STRING,
WHSETASKCRTNWHSETMZNDATE TYPE STRING,
WHSETASKCONFWHSETMZNDATE TYPE STRING,
WHSETSKPLNDCLSGWHSETMZNDATE TYPE STRING,
WHSETASKOVERDUEHOURS TYPE STRING,
WHSETASKOVERDUEHOURSDESC TYPE STRING,
NUMBEROFWAREHOUSETASKITEMS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEWMWTOVPQ_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_CEWMWTOVPQ_STR-MANDT sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSE sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSETASK sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSETASKITEM sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSENAME sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSEPROCESSTYPE sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSEPROCESSTYPENAME sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSEPROCESSCATEGORY sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSEPROCESSCATEGORYNAME sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSETASKSTATUS sy-vline 
WA_CEWMWTOVPQ_STR-WAREHOUSETASKSTATUSNAME sy-vline 
WA_CEWMWTOVPQ_STR-ACTIVITYAREA sy-vline 
WA_CEWMWTOVPQ_STR-ACTIVITYAREANAME sy-vline 
WA_CEWMWTOVPQ_STR-ISHANDLINGUNITWAREHOUSETASK sy-vline 
WA_CEWMWTOVPQ_STR-WHSETASKCRTNWHSETMZNDATE sy-vline 
WA_CEWMWTOVPQ_STR-WHSETASKCONFWHSETMZNDATE sy-vline 
WA_CEWMWTOVPQ_STR-WHSETSKPLNDCLSGWHSETMZNDATE sy-vline 
WA_CEWMWTOVPQ_STR-WHSETASKOVERDUEHOURS sy-vline 
WA_CEWMWTOVPQ_STR-WHSETASKOVERDUEHOURSDESC sy-vline 
WA_CEWMWTOVPQ_STR-NUMBEROFWAREHOUSETASKITEMS sy-vline      INTO ld_text SEPARATED BY SPACE.

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