ABAP Select data from SAP table ISAITMCNDWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISAITMCNDWD
*  INTO TABLE @DATA(IT_ISAITMCNDWD2).
*--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_ISAITMCNDWD INDEX 1 INTO DATA(WA_ISAITMCNDWD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISAITMCNDWD>-MANDT = 1.
<ISAITMCNDWD>-CONDITIONTYPE = 1.
<ISAITMCNDWD>-CONDITIONVALIDITYENDDATE = 1.
<ISAITMCNDWD>-SCHEDULINGAGREEMENTITEM = 1.
<ISAITMCNDWD>-SCHEDULINGAGREEMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISAITMCNDWD-CONDITIONRECORD, sy-vline,
  WA_ISAITMCNDWD-CONDITIONSEQUENTIALNUMBER, sy-vline,
  WA_ISAITMCNDWD-SCHEDULINGAGREEMENTITEMFOREDIT, sy-vline,
  WA_ISAITMCNDWD-SCHEDULINGAGREEMENTFOREDIT, sy-vline,
  WA_ISAITMCNDWD-CNDNVALDTYENDDTEFOREDIT, sy-vline,
  WA_ISAITMCNDWD-CONDITIONTYPEFOREDIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISAITMCNDWD 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_ISAITMCNDWD 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_ISAITMCNDWD INTO WA_ISAITMCNDWD.


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

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

*Conversion exit CUNIT, internal->external for field CONDITIONQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISAITMCNDWD-CONDITIONQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISAITMCNDWD-CONDITIONQUANTITYUNIT.
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_ISAITMCNDWD_STR, 
MANDT TYPE STRING,
CONDITIONTYPE TYPE STRING,
CONDITIONVALIDITYENDDATE TYPE STRING,
SCHEDULINGAGREEMENTITEM TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
CONDITIONRECORD TYPE STRING,
CONDITIONSEQUENTIALNUMBER TYPE STRING,
SCHEDULINGAGREEMENTITEMFOREDIT TYPE STRING,
SCHEDULINGAGREEMENTFOREDIT TYPE STRING,
CNDNVALDTYENDDTEFOREDIT TYPE STRING,
CONDITIONTYPEFOREDIT TYPE STRING,
CONDITIONRECORDFOREDIT TYPE STRING,
CNDNSEQUENTIALNUMBERFOREDIT TYPE STRING,
CONDITIONVALIDITYSTARTDATE TYPE STRING,
CONDITIONRATEVALUE TYPE STRING,
CONDITIONCALCULATIONTYPE TYPE STRING,
CONDITIONRATEVALUEUNIT TYPE STRING,
CONDITIONQUANTITY TYPE STRING,
CONDITIONQUANTITYUNIT TYPE STRING,
CONDITIONAPPLICATION TYPE STRING,
CONDITIONISDELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISAITMCNDWD_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_ISAITMCNDWD_STR-MANDT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONTYPE sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONVALIDITYENDDATE sy-vline 
WA_ISAITMCNDWD_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_ISAITMCNDWD_STR-SCHEDULINGAGREEMENT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONRECORD sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONSEQUENTIALNUMBER sy-vline 
WA_ISAITMCNDWD_STR-SCHEDULINGAGREEMENTITEMFOREDIT sy-vline 
WA_ISAITMCNDWD_STR-SCHEDULINGAGREEMENTFOREDIT sy-vline 
WA_ISAITMCNDWD_STR-CNDNVALDTYENDDTEFOREDIT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONTYPEFOREDIT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONRECORDFOREDIT sy-vline 
WA_ISAITMCNDWD_STR-CNDNSEQUENTIALNUMBERFOREDIT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONVALIDITYSTARTDATE sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONRATEVALUE sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONCALCULATIONTYPE sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONRATEVALUEUNIT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONQUANTITY sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONQUANTITYUNIT sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONAPPLICATION sy-vline 
WA_ISAITMCNDWD_STR-CONDITIONISDELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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