ABAP Select data from SAP table ISSCHEDULEAGMTITEMWD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSCHEDULEAGMTITEMWD
*  INTO TABLE @DATA(IT_ISSCHEDULEAGMTITEMWD2).
*--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_ISSCHEDULEAGMTITEMWD INDEX 1 INTO DATA(WA_ISSCHEDULEAGMTITEMWD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSCHEDULEAGMTITEMWD>-KEY = 1.
<ISSCHEDULEAGMTITEMWD>-PARENT_KEY = 1.
<ISSCHEDULEAGMTITEMWD>-ROOT_KEY = 1.
<ISSCHEDULEAGMTITEMWD>-ACTIVESCHEDULEAGREEMENT = 1.
<ISSCHEDULEAGMTITEMWD>-ACTIVESCHEDULEAGREEMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSCHEDULEAGMTITEMWD-COMPANYCODE, sy-vline,
  WA_ISSCHEDULEAGMTITEMWD-PURCHASINGDOCUMENTCATEGORY, sy-vline,
  WA_ISSCHEDULEAGMTITEMWD-PURCHASINGDOCUMENTITEMTEXT, sy-vline,
  WA_ISSCHEDULEAGMTITEMWD-MATERIAL, sy-vline,
  WA_ISSCHEDULEAGMTITEMWD-MANUFACTURERMATERIAL, sy-vline,
  WA_ISSCHEDULEAGMTITEMWD-SUPPLIERMATERIALNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSCHEDULEAGMTITEMWD 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_ISSCHEDULEAGMTITEMWD 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_ISSCHEDULEAGMTITEMWD INTO WA_ISSCHEDULEAGMTITEMWD.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSCHEDULEAGMTITEMWD-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSCHEDULEAGMTITEMWD-PURCHASEREQUISITION.
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_ISSCHEDULEAGMTITEMWD_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
ACTIVESCHEDULEAGREEMENT TYPE STRING,
ACTIVESCHEDULEAGREEMENTITEM TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTITEMTEXT TYPE STRING,
MATERIAL TYPE STRING,
MANUFACTURERMATERIAL TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
MATERIALGROUP TYPE STRING,
PLANT TYPE STRING,
MANUALDELIVERYADDRESSID TYPE STRING,
REFERENCEDELIVERYADDRESSID TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
ITEMNETWEIGHT TYPE STRING,
WEIGHTUNIT TYPE STRING,
TARGETQUANTITY TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
SCHEDAGRMTAGREEDCUMQTY TYPE STRING,
SCHEDAGRMTCUMQTYRECONCILEDATE TYPE STRING,
SCHEDLINESEMIFIRMORDERINDAYS TYPE STRING,
SCHEDULELINEFIRMORDERINDAYS TYPE STRING,
ITEMLASTTRANSMISSIONDATE TYPE STRING,
SCHEDULEAGREEMENTITEM TYPE STRING,
HASACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSCHEDULEAGMTITEMWD_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_ISSCHEDULEAGMTITEMWD_STR-KEY sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-PARENT_KEY sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-ROOT_KEY sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-ACTIVESCHEDULEAGREEMENT sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-ACTIVESCHEDULEAGREEMENTITEM sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-COMPANYCODE sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-PURCHASINGDOCUMENTITEMTEXT sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-MATERIAL sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-MANUFACTURERMATERIAL sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-MATERIALGROUP sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-PLANT sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-MANUALDELIVERYADDRESSID sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-REFERENCEDELIVERYADDRESSID sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-ORDERQUANTITYUNIT sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-ITEMNETWEIGHT sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-WEIGHTUNIT sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-TARGETQUANTITY sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-PURCHASEREQUISITION sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-SCHEDAGRMTAGREEDCUMQTY sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-SCHEDAGRMTCUMQTYRECONCILEDATE sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-SCHEDLINESEMIFIRMORDERINDAYS sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-SCHEDULELINEFIRMORDERINDAYS sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-ITEMLASTTRANSMISSIONDATE sy-vline 
WA_ISSCHEDULEAGMTITEMWD_STR-SCHEDULEAGREEMENTITEM sy-vline 
WA_ISSCHEDULEAGMTITEMWD_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.