ABAP Select data from SAP table CALIGNMENTCOMCSG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CALIGNMENTCOMCSG
*  INTO TABLE @DATA(IT_CALIGNMENTCOMCSG2).
*--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_CALIGNMENTCOMCSG INDEX 1 INTO DATA(WA_CALIGNMENTCOMCSG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CALIGNMENTCOMCSG>-MANDT = 1.
<CALIGNMENTCOMCSG>-PURREQNALGNMTRUNUUID = 1.
<CALIGNMENTCOMCSG>-PURREQNALGNMTRUNTEXT = 1.
<CALIGNMENTCOMCSG>-PURREQNALIGNMENTID = 1.
<CALIGNMENTCOMCSG>-PRODUCT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CALIGNMENTCOMCSG-REQUESTEDQUANTITY, sy-vline,
  WA_CALIGNMENTCOMCSG-PURCHASEREQUISITIONUNIT, sy-vline,
  WA_CALIGNMENTCOMCSG-PURCHASEREQUISITION, sy-vline,
  WA_CALIGNMENTCOMCSG-PURCHASEREQUISITIONITEM, sy-vline,
  WA_CALIGNMENTCOMCSG-PURCHASEORDERITEMSTOCKSEGMENT, sy-vline,
  WA_CALIGNMENTCOMCSG-ALIGNEDPURORDITMQTYINBASEUOM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CALIGNMENTCOMCSG 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_CALIGNMENTCOMCSG 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_CALIGNMENTCOMCSG INTO WA_CALIGNMENTCOMCSG.


*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 MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CALIGNMENTCOMCSG-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CALIGNMENTCOMCSG-PRODUCT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PURREQNHASALIGNMENTPROPOSAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CALIGNMENTCOMCSG-PURREQNHASALIGNMENTPROPOSAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CALIGNMENTCOMCSG-PURREQNHASALIGNMENTPROPOSAL.
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_CALIGNMENTCOMCSG_STR, 
MANDT TYPE STRING,
PURREQNALGNMTRUNUUID TYPE STRING,
PURREQNALGNMTRUNTEXT TYPE STRING,
PURREQNALIGNMENTID TYPE STRING,
PRODUCT TYPE STRING,
REQUESTEDQUANTITY TYPE STRING,
PURCHASEREQUISITIONUNIT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASEORDERITEMSTOCKSEGMENT TYPE STRING,
ALIGNEDPURORDITMQTYINBASEUOM TYPE STRING,
ALIGNEDPURORDITEMBASEUNIT TYPE STRING,
ALIGNEDPURCHASINGDOCUMENT TYPE STRING,
ALIGNEDPURCHASINGDOCUMENTITEM TYPE STRING,
PROPOSEDPURCHASINGDOCUMENT TYPE STRING,
PROPOSEDPURCHASINGDOCUMENTITEM TYPE STRING,
PURCHASEREQNITEMSTOCKSEGMENT TYPE STRING,
PURREQNHASALIGNMENTPROPOSAL TYPE STRING,
PURCHASEREQUISITIONITEMPLANT TYPE STRING,
PURREQNITEMPLANTNAME TYPE STRING,
PURREQNHASCROSSSGMTALGNMTNAME TYPE STRING,
PURREQNCRSPLANTALGNMTNAME TYPE STRING,
PURREQNCRSSEASONALGNMTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CALIGNMENTCOMCSG_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_CALIGNMENTCOMCSG_STR-MANDT sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNALGNMTRUNUUID sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNALGNMTRUNTEXT sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNALIGNMENTID sy-vline 
WA_CALIGNMENTCOMCSG_STR-PRODUCT sy-vline 
WA_CALIGNMENTCOMCSG_STR-REQUESTEDQUANTITY sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURCHASEREQUISITIONUNIT sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURCHASEREQUISITION sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURCHASEORDERITEMSTOCKSEGMENT sy-vline 
WA_CALIGNMENTCOMCSG_STR-ALIGNEDPURORDITMQTYINBASEUOM sy-vline 
WA_CALIGNMENTCOMCSG_STR-ALIGNEDPURORDITEMBASEUNIT sy-vline 
WA_CALIGNMENTCOMCSG_STR-ALIGNEDPURCHASINGDOCUMENT sy-vline 
WA_CALIGNMENTCOMCSG_STR-ALIGNEDPURCHASINGDOCUMENTITEM sy-vline 
WA_CALIGNMENTCOMCSG_STR-PROPOSEDPURCHASINGDOCUMENT sy-vline 
WA_CALIGNMENTCOMCSG_STR-PROPOSEDPURCHASINGDOCUMENTITEM sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURCHASEREQNITEMSTOCKSEGMENT sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNHASALIGNMENTPROPOSAL sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURCHASEREQUISITIONITEMPLANT sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNITEMPLANTNAME sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNHASCROSSSGMTALGNMTNAME sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNCRSPLANTALGNMTNAME sy-vline 
WA_CALIGNMENTCOMCSG_STR-PURREQNCRSSEASONALGNMTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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