ABAP Select data from SAP table CPASQNCMCCTWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPASQNCMCCTWD
*  INTO TABLE @DATA(IT_CPASQNCMCCTWD2).
*--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_CPASQNCMCCTWD INDEX 1 INTO DATA(WA_CPASQNCMCCTWD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPASQNCMCCTWD>-MANDT = 1.
<CPASQNCMCCTWD>-PRODALLOCSQNCCONSTRAINTUUID = 1.
<CPASQNCMCCTWD>-PRODUCTALLOCATIONSEQUENCEUUID = 1.
<CPASQNCMCCTWD>-PRODUCTALLOCATIONSEQUENCE = 1.
<CPASQNCMCCTWD>-PRODUCTALLOCATIONSEQUENCEGROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPASQNCMCCTWD-PRODALLOCSEQUENCEGROUPUUID, sy-vline,
  WA_CPASQNCMCCTWD-PRODALLOCSEQUENCECONSTRAINT, sy-vline,
  WA_CPASQNCMCCTWD-PRODUCTALLOCATIONOBJECTUUID, sy-vline,
  WA_CPASQNCMCCTWD-PRODUCTALLOCATIONPERIODTYPE, sy-vline,
  WA_CPASQNCMCCTWD-NUMBEROFBACKWARDCNSMPNPERIODS, sy-vline,
  WA_CPASQNCMCCTWD-NUMBEROFFORWARDCNSMPNPERIODS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPASQNCMCCTWD 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_CPASQNCMCCTWD 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_CPASQNCMCCTWD INTO WA_CPASQNCMCCTWD.


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

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

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

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

*Conversion exit CUNIT, internal->external for field PRODUCTALLOCATIONQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPASQNCMCCTWD-PRODUCTALLOCATIONQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPASQNCMCCTWD-PRODUCTALLOCATIONQUANTITYUNIT.
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_CPASQNCMCCTWD_STR, 
MANDT TYPE STRING,
PRODALLOCSQNCCONSTRAINTUUID TYPE STRING,
PRODUCTALLOCATIONSEQUENCEUUID TYPE STRING,
PRODUCTALLOCATIONSEQUENCE TYPE STRING,
PRODUCTALLOCATIONSEQUENCEGROUP TYPE STRING,
PRODALLOCSEQUENCEGROUPUUID TYPE STRING,
PRODALLOCSEQUENCECONSTRAINT TYPE STRING,
PRODUCTALLOCATIONOBJECTUUID TYPE STRING,
PRODUCTALLOCATIONPERIODTYPE TYPE STRING,
NUMBEROFBACKWARDCNSMPNPERIODS TYPE STRING,
NUMBEROFFORWARDCNSMPNPERIODS TYPE STRING,
HORIZONTALCONSUMPTIONDIRECTION TYPE STRING,
PASTPERIODISALLOWED TYPE STRING,
PRODALLOCSQNCCONSUMPTIONUNIT TYPE STRING,
PRODUCTALLOCATIONQUANTITYUNIT TYPE STRING,
PRODUCTALLOCATIONRATE TYPE STRING,
PRODALLOCATIONCONSTRAINTSTATUS TYPE STRING,
VALIDITYSTARTUTCDATETIME TYPE STRING,
VALIDITYENDUTCDATETIME TYPE STRING,
PRODALLOCCHECKDATETIMETYPE TYPE STRING,
PRODALLOCLEADTIMEDURATION TYPE STRING,
PRODALLOCLEADTIMEDURATIONUNIT TYPE STRING,
ISDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPASQNCMCCTWD_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_CPASQNCMCCTWD_STR-MANDT sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCSQNCCONSTRAINTUUID sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONSEQUENCEUUID sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONSEQUENCE sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONSEQUENCEGROUP sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCSEQUENCEGROUPUUID sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCSEQUENCECONSTRAINT sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONOBJECTUUID sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONPERIODTYPE sy-vline 
WA_CPASQNCMCCTWD_STR-NUMBEROFBACKWARDCNSMPNPERIODS sy-vline 
WA_CPASQNCMCCTWD_STR-NUMBEROFFORWARDCNSMPNPERIODS sy-vline 
WA_CPASQNCMCCTWD_STR-HORIZONTALCONSUMPTIONDIRECTION sy-vline 
WA_CPASQNCMCCTWD_STR-PASTPERIODISALLOWED sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCSQNCCONSUMPTIONUNIT sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONQUANTITYUNIT sy-vline 
WA_CPASQNCMCCTWD_STR-PRODUCTALLOCATIONRATE sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCATIONCONSTRAINTSTATUS sy-vline 
WA_CPASQNCMCCTWD_STR-VALIDITYSTARTUTCDATETIME sy-vline 
WA_CPASQNCMCCTWD_STR-VALIDITYENDUTCDATETIME sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCCHECKDATETIMETYPE sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCLEADTIMEDURATION sy-vline 
WA_CPASQNCMCCTWD_STR-PRODALLOCLEADTIMEDURATIONUNIT sy-vline 
WA_CPASQNCMCCTWD_STR-ISDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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