ABAP Select data from SAP table ISPRODALLOCSQNCCSTRTWD_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISPRODALLOCSQNCCSTRTWD_D
*  INTO TABLE @DATA(IT_ISPRODALLOCSQNCCSTRTWD_D2).
*--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_ISPRODALLOCSQNCCSTRTWD_D INDEX 1 INTO DATA(WA_ISPRODALLOCSQNCCSTRTWD_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISPRODALLOCSQNCCSTRTWD_D>-ACTIVEPRODALLOCSQNCCSTRTUUID = 1.
<ISPRODALLOCSQNCCSTRTWD_D>-PRODALLOCSEQUENCECONSTRAINT = 1.
<ISPRODALLOCSQNCCSTRTWD_D>-PRODUCTALLOCATIONSEQUENCEGROUP = 1.
<ISPRODALLOCSQNCCSTRTWD_D>-PRODUCTALLOCATIONSEQUENCE = 1.
<ISPRODALLOCSQNCCSTRTWD_D>-VALIDITYSTARTUTCDATETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISPRODALLOCSQNCCSTRTWD_D-VALIDITYSTARTTIMEZONE, sy-vline,
  WA_ISPRODALLOCSQNCCSTRTWD_D-VALIDITYENDUTCDATETIME, sy-vline,
  WA_ISPRODALLOCSQNCCSTRTWD_D-VALIDITYENDTIMEZONE, sy-vline,
  WA_ISPRODALLOCSQNCCSTRTWD_D-PRODUCTALLOCATIONOBJECTUUID, sy-vline,
  WA_ISPRODALLOCSQNCCSTRTWD_D-PRODUCTALLOCATIONRATE, sy-vline,
  WA_ISPRODALLOCSQNCCSTRTWD_D-PRODALLOCLEADTIMEDURATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISPRODALLOCSQNCCSTRTWD_D 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_ISPRODALLOCSQNCCSTRTWD_D 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_ISPRODALLOCSQNCCSTRTWD_D INTO WA_ISPRODALLOCSQNCCSTRTWD_D.


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

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

*Conversion exit ALPHA, internal->external for field PRODUCTALLOCATIONSEQUENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISPRODALLOCSQNCCSTRTWD_D-PRODUCTALLOCATIONSEQUENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISPRODALLOCSQNCCSTRTWD_D-PRODUCTALLOCATIONSEQUENCE.
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_ISPRODALLOCSQNCCSTRTWD_D_STR, 
ACTIVEPRODALLOCSQNCCSTRTUUID TYPE STRING,
PRODALLOCSEQUENCECONSTRAINT TYPE STRING,
PRODUCTALLOCATIONSEQUENCEGROUP TYPE STRING,
PRODUCTALLOCATIONSEQUENCE TYPE STRING,
VALIDITYSTARTUTCDATETIME TYPE STRING,
VALIDITYSTARTTIMEZONE TYPE STRING,
VALIDITYENDUTCDATETIME TYPE STRING,
VALIDITYENDTIMEZONE TYPE STRING,
PRODUCTALLOCATIONOBJECTUUID TYPE STRING,
PRODUCTALLOCATIONRATE TYPE STRING,
PRODALLOCLEADTIMEDURATION TYPE STRING,
PRODALLOCLEADTIMEDURATIONUNIT TYPE STRING,
NUMBEROFBACKWARDCNSMPNPERIODS TYPE STRING,
NUMBEROFFORWARDCNSMPNPERIODS TYPE STRING,
HORIZONTALCONSUMPTIONDIRECTION TYPE STRING,
PASTPERIODISALLOWED TYPE STRING,
PRODALLOCCHECKDATETIMETYPE TYPE STRING,
PRODALLOCATIONCONSTRAINTSTATUS TYPE STRING,
AFTERVALIDITYCONSTRAINTSTATUS TYPE STRING,
BEFOREVALIDITYCONSTRAINTSTATUS TYPE STRING,
ISDELETED TYPE STRING,
HASACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISPRODALLOCSQNCCSTRTWD_D_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_ISPRODALLOCSQNCCSTRTWD_D_STR-ACTIVEPRODALLOCSQNCCSTRTUUID sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODALLOCSEQUENCECONSTRAINT sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODUCTALLOCATIONSEQUENCEGROUP sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODUCTALLOCATIONSEQUENCE sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-VALIDITYSTARTUTCDATETIME sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-VALIDITYSTARTTIMEZONE sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-VALIDITYENDUTCDATETIME sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-VALIDITYENDTIMEZONE sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODUCTALLOCATIONOBJECTUUID sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODUCTALLOCATIONRATE sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODALLOCLEADTIMEDURATION sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODALLOCLEADTIMEDURATIONUNIT sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-NUMBEROFBACKWARDCNSMPNPERIODS sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-NUMBEROFFORWARDCNSMPNPERIODS sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-HORIZONTALCONSUMPTIONDIRECTION sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PASTPERIODISALLOWED sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODALLOCCHECKDATETIMETYPE sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-PRODALLOCATIONCONSTRAINTSTATUS sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-AFTERVALIDITYCONSTRAINTSTATUS sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-BEFOREVALIDITYCONSTRAINTSTATUS sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-ISDELETED sy-vline 
WA_ISPRODALLOCSQNCCSTRTWD_D_STR-HASACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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