ABAP Select data from SAP table ISSCHEDGAGRMTPARTNWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSCHEDGAGRMTPARTNWD
*  INTO TABLE @DATA(IT_ISSCHEDGAGRMTPARTNWD2).
*--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_ISSCHEDGAGRMTPARTNWD INDEX 1 INTO DATA(WA_ISSCHEDGAGRMTPARTNWD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSCHEDGAGRMTPARTNWD>-KEY = 1.
<ISSCHEDGAGRMTPARTNWD>-PARENT_KEY = 1.
<ISSCHEDGAGRMTPARTNWD>-ROOT_KEY = 1.
<ISSCHEDGAGRMTPARTNWD>-PARTNERCOUNTER = 1.
<ISSCHEDGAGRMTPARTNWD>-PARTNERFUNCTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSCHEDGAGRMTPARTNWD-PLANT, sy-vline,
  WA_ISSCHEDGAGRMTPARTNWD-SUPPLIERSUBRANGE, sy-vline,
  WA_ISSCHEDGAGRMTPARTNWD-PURCHASINGORGANIZATION, sy-vline,
  WA_ISSCHEDGAGRMTPARTNWD-SCHEDULINGAGREEMENTITEM, sy-vline,
  WA_ISSCHEDGAGRMTPARTNWD-SCHEDULINGAGREEMENT, sy-vline,
  WA_ISSCHEDGAGRMTPARTNWD-PARTNERCOUNTERFOREDIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSCHEDGAGRMTPARTNWD 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_ISSCHEDGAGRMTPARTNWD 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_ISSCHEDGAGRMTPARTNWD INTO WA_ISSCHEDGAGRMTPARTNWD.


*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_ISSCHEDGAGRMTPARTNWD-SCHEDULINGAGREEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSCHEDGAGRMTPARTNWD-SCHEDULINGAGREEMENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSCHEDGAGRMTPARTNWD-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSCHEDGAGRMTPARTNWD-SUPPLIER.
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_ISSCHEDGAGRMTPARTNWD_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
PARTNERCOUNTER TYPE STRING,
PARTNERFUNCTION TYPE STRING,
PLANT TYPE STRING,
SUPPLIERSUBRANGE TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
SCHEDULINGAGREEMENTITEM TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
PARTNERCOUNTERFOREDIT TYPE STRING,
PURCHASINGORGFOREDIT TYPE STRING,
SUPPLIERSUBRANGEFOREDIT TYPE STRING,
PLANTFOREDIT TYPE STRING,
PARTNERFUNCTIONFOREDIT TYPE STRING,
SCHEDGAGRMTPARTNER TYPE STRING,
SCHEDGAGRMTPARTNERNAME TYPE STRING,
PURCHASINGDOCUMENTPARTNERTYPE TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
SCHEDGAGRMTCATEGORY TYPE STRING,
SCHEDGAGRMTTYPE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERCONTACT TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
PERSONWORKAGREEMENT TYPE STRING,
DEFAULTPARTNER TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSCHEDGAGRMTPARTNWD_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_ISSCHEDGAGRMTPARTNWD_STR-KEY sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PARENT_KEY sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-ROOT_KEY sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PARTNERCOUNTER sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PARTNERFUNCTION sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PLANT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SUPPLIERSUBRANGE sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PURCHASINGORGANIZATION sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SCHEDULINGAGREEMENT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PARTNERCOUNTERFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PURCHASINGORGFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SUPPLIERSUBRANGEFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PLANTFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PARTNERFUNCTIONFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SCHEDGAGRMTPARTNER sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SCHEDGAGRMTPARTNERNAME sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PURCHASINGDOCUMENTPARTNERTYPE sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PURCHASINGGROUP sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SCHEDGAGRMTCATEGORY sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SCHEDGAGRMTTYPE sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-CREATEDBYUSER sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-CREATIONDATE sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SUPPLIER sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-SUPPLIERCONTACT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-EMPLOYMENTINTERNALID sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-PERSONWORKAGREEMENT sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-DEFAULTPARTNER sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-HASACTIVEENTITY sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISSCHEDGAGRMTPARTNWD_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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