ABAP Select data from SAP table ISSCHEDGAGRMTPARTNERWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSCHEDGAGRMTPARTNERWD
*  INTO TABLE @DATA(IT_ISSCHEDGAGRMTPARTNERWD2).
*--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_ISSCHEDGAGRMTPARTNERWD INDEX 1 INTO DATA(WA_ISSCHEDGAGRMTPARTNERWD2).


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

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

ENDLOOP.

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

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


*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 PARVW, internal->external for field PARTNERFUNCTION
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_ISSCHEDGAGRMTPARTNERWD-PARTNERFUNCTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSCHEDGAGRMTPARTNERWD-PARTNERFUNCTION.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PARVW, internal->external for field PARTNERFUNCTIONFOREDIT
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_ISSCHEDGAGRMTPARTNERWD-PARTNERFUNCTIONFOREDIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSCHEDGAGRMTPARTNERWD-PARTNERFUNCTIONFOREDIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SUPPLIER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSCHEDGAGRMTPARTNERWD-SUPPLIER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSCHEDGAGRMTPARTNERWD-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_ISSCHEDGAGRMTPARTNERWD_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,
PURCHASINGORGFOREDIT TYPE STRING,
SUPPLIERSUBRANGEFOREDIT TYPE STRING,
PLANTFOREDIT TYPE STRING,
PARTNERFUNCTIONFOREDIT TYPE STRING,
SCHEDGAGRMTPARTNER TYPE STRING,
SCHEDGAGRMTPARTNERNAME TYPE STRING,
PURCHASINGDOCUMENTPARTNERTYPE TYPE STRING,
SCHEDGAGRMTCATEGORY TYPE STRING,
SCHEDGAGRMTTYPE TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERCONTACT TYPE STRING,
EMPLOYMENTINTERNALID 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_ISSCHEDGAGRMTPARTNERWD_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_ISSCHEDGAGRMTPARTNERWD_STR-KEY sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PARENT_KEY sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-ROOT_KEY sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PARTNERCOUNTER sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PARTNERFUNCTION sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PLANT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SUPPLIERSUBRANGE sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PURCHASINGORGANIZATION sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SCHEDULINGAGREEMENT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PURCHASINGORGFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SUPPLIERSUBRANGEFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PLANTFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PARTNERFUNCTIONFOREDIT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SCHEDGAGRMTPARTNER sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SCHEDGAGRMTPARTNERNAME sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-PURCHASINGDOCUMENTPARTNERTYPE sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SCHEDGAGRMTCATEGORY sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SCHEDGAGRMTTYPE sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-CREATEDBYUSER sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-CREATIONDATE sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SUPPLIER sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-SUPPLIERCONTACT sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-EMPLOYMENTINTERNALID sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-DEFAULTPARTNER sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-HASACTIVEENTITY sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISSCHEDGAGRMTPARTNERWD_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.