ABAP Select data from SAP table ISAGSUBCOMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISAGSUBCOMP
*  INTO TABLE @DATA(IT_ISAGSUBCOMP2).
*--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_ISAGSUBCOMP INDEX 1 INTO DATA(WA_ISAGSUBCOMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISAGSUBCOMP>-MANDT = 1.
<ISAGSUBCOMP>-SCHEDULINGAGREEMENT = 1.
<ISAGSUBCOMP>-SCHEDULINGAGREEMENTITEM = 1.
<ISAGSUBCOMP>-SCHEDULELINE = 1.
<ISAGSUBCOMP>-RESERVATIONITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISAGSUBCOMP-RECORDTYPE, sy-vline,
  WA_ISAGSUBCOMP-RESERVATION, sy-vline,
  WA_ISAGSUBCOMP-MATERIAL, sy-vline,
  WA_ISAGSUBCOMP-BASEUNIT, sy-vline,
  WA_ISAGSUBCOMP-REQUIREDQUANTITY, sy-vline,
  WA_ISAGSUBCOMP-REQUIREMENTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISAGSUBCOMP 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_ISAGSUBCOMP 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_ISAGSUBCOMP INTO WA_ISAGSUBCOMP.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field UNITOFMEASUREFORSIZE1TO3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISAGSUBCOMP-UNITOFMEASUREFORSIZE1TO3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISAGSUBCOMP-UNITOFMEASUREFORSIZE1TO3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CHANGENUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISAGSUBCOMP-CHANGENUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISAGSUBCOMP-CHANGENUMBER.
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_ISAGSUBCOMP_STR, 
MANDT TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
SCHEDULINGAGREEMENTITEM TYPE STRING,
SCHEDULELINE TYPE STRING,
RESERVATIONITEM TYPE STRING,
RECORDTYPE TYPE STRING,
RESERVATION TYPE STRING,
MATERIAL TYPE STRING,
BASEUNIT TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
REQUIREMENTDATE TYPE STRING,
REQUIREMENTTIME TYPE STRING,
PLANT TYPE STRING,
LATESTREQUIREMENTDATE TYPE STRING,
ORDERLEVELVALUE TYPE STRING,
ORDERPATHVALUE TYPE STRING,
BILLOFMATERIALITEMNUMBER TYPE STRING,
SORTFIELD TYPE STRING,
BOMITEMCATEGORY TYPE STRING,
MATERIALCOMPONENTISPHANTOMITEM TYPE STRING,
ISBULKMATERIALCOMPONENT TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
INVENTORYSPECIALSTOCKTYPE TYPE STRING,
CONSUMPTIONPOSTING TYPE STRING,
INVENTORYSPECIALSTOCKVALNTYPE TYPE STRING,
ISMATERIALPROVISION TYPE STRING,
DEBITCREDITCODE TYPE STRING,
RESERVATIONISFINALLYISSUED TYPE STRING,
QUANTITYINENTRYUNIT TYPE STRING,
ENTRYUNIT TYPE STRING,
MATERIALQTYTOBASEQTYNMRTR TYPE STRING,
MATERIALQTYTOBASEQTYDNMNTR TYPE STRING,
WITHDRAWNQUANTITY TYPE STRING,
QUANTITYISFIXED TYPE STRING,
COMPONENTSCRAPINPERCENT TYPE STRING,
OPERATIONSCRAPINPERCENT TYPE STRING,
ISNETSCRAP TYPE STRING,
LEADTIMEOFFSET TYPE STRING,
QUANTITYDISTRIBUTIONKEY TYPE STRING,
MATERIALREVISIONLEVEL TYPE STRING,
MATERIALCOMPISVARIABLESIZED TYPE STRING,
NUMBEROFVARIABLESIZECOMPONENTS TYPE STRING,
VARIABLESIZEITEMQUANTITY TYPE STRING,
VARIABLESIZECOMPONENTUNIT TYPE STRING,
VARIABLESIZECOMPONENTQUANTITY TYPE STRING,
UNITOFMEASUREFORSIZE1TO3 TYPE STRING,
SIZE1 TYPE STRING,
SIZE2 TYPE STRING,
SIZE3 TYPE STRING,
FORMULAKEY TYPE STRING,
STORAGELOCATION TYPE STRING,
PRODUCTIONSUPPLYAREA TYPE STRING,
BATCH TYPE STRING,
BOMITEMDESCRIPTION TYPE STRING,
BOMITEMTEXT2 TYPE STRING,
CHANGENUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISAGSUBCOMP_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_ISAGSUBCOMP_STR-MANDT sy-vline 
WA_ISAGSUBCOMP_STR-SCHEDULINGAGREEMENT sy-vline 
WA_ISAGSUBCOMP_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_ISAGSUBCOMP_STR-SCHEDULELINE sy-vline 
WA_ISAGSUBCOMP_STR-RESERVATIONITEM sy-vline 
WA_ISAGSUBCOMP_STR-RECORDTYPE sy-vline 
WA_ISAGSUBCOMP_STR-RESERVATION sy-vline 
WA_ISAGSUBCOMP_STR-MATERIAL sy-vline 
WA_ISAGSUBCOMP_STR-BASEUNIT sy-vline 
WA_ISAGSUBCOMP_STR-REQUIREDQUANTITY sy-vline 
WA_ISAGSUBCOMP_STR-REQUIREMENTDATE sy-vline 
WA_ISAGSUBCOMP_STR-REQUIREMENTTIME sy-vline 
WA_ISAGSUBCOMP_STR-PLANT sy-vline 
WA_ISAGSUBCOMP_STR-LATESTREQUIREMENTDATE sy-vline 
WA_ISAGSUBCOMP_STR-ORDERLEVELVALUE sy-vline 
WA_ISAGSUBCOMP_STR-ORDERPATHVALUE sy-vline 
WA_ISAGSUBCOMP_STR-BILLOFMATERIALITEMNUMBER sy-vline 
WA_ISAGSUBCOMP_STR-SORTFIELD sy-vline 
WA_ISAGSUBCOMP_STR-BOMITEMCATEGORY sy-vline 
WA_ISAGSUBCOMP_STR-MATERIALCOMPONENTISPHANTOMITEM sy-vline 
WA_ISAGSUBCOMP_STR-ISBULKMATERIALCOMPONENT sy-vline 
WA_ISAGSUBCOMP_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_ISAGSUBCOMP_STR-INVENTORYSPECIALSTOCKTYPE sy-vline 
WA_ISAGSUBCOMP_STR-CONSUMPTIONPOSTING sy-vline 
WA_ISAGSUBCOMP_STR-INVENTORYSPECIALSTOCKVALNTYPE sy-vline 
WA_ISAGSUBCOMP_STR-ISMATERIALPROVISION sy-vline 
WA_ISAGSUBCOMP_STR-DEBITCREDITCODE sy-vline 
WA_ISAGSUBCOMP_STR-RESERVATIONISFINALLYISSUED sy-vline 
WA_ISAGSUBCOMP_STR-QUANTITYINENTRYUNIT sy-vline 
WA_ISAGSUBCOMP_STR-ENTRYUNIT sy-vline 
WA_ISAGSUBCOMP_STR-MATERIALQTYTOBASEQTYNMRTR sy-vline 
WA_ISAGSUBCOMP_STR-MATERIALQTYTOBASEQTYDNMNTR sy-vline 
WA_ISAGSUBCOMP_STR-WITHDRAWNQUANTITY sy-vline 
WA_ISAGSUBCOMP_STR-QUANTITYISFIXED sy-vline 
WA_ISAGSUBCOMP_STR-COMPONENTSCRAPINPERCENT sy-vline 
WA_ISAGSUBCOMP_STR-OPERATIONSCRAPINPERCENT sy-vline 
WA_ISAGSUBCOMP_STR-ISNETSCRAP sy-vline 
WA_ISAGSUBCOMP_STR-LEADTIMEOFFSET sy-vline 
WA_ISAGSUBCOMP_STR-QUANTITYDISTRIBUTIONKEY sy-vline 
WA_ISAGSUBCOMP_STR-MATERIALREVISIONLEVEL sy-vline 
WA_ISAGSUBCOMP_STR-MATERIALCOMPISVARIABLESIZED sy-vline 
WA_ISAGSUBCOMP_STR-NUMBEROFVARIABLESIZECOMPONENTS sy-vline 
WA_ISAGSUBCOMP_STR-VARIABLESIZEITEMQUANTITY sy-vline 
WA_ISAGSUBCOMP_STR-VARIABLESIZECOMPONENTUNIT sy-vline 
WA_ISAGSUBCOMP_STR-VARIABLESIZECOMPONENTQUANTITY sy-vline 
WA_ISAGSUBCOMP_STR-UNITOFMEASUREFORSIZE1TO3 sy-vline 
WA_ISAGSUBCOMP_STR-SIZE1 sy-vline 
WA_ISAGSUBCOMP_STR-SIZE2 sy-vline 
WA_ISAGSUBCOMP_STR-SIZE3 sy-vline 
WA_ISAGSUBCOMP_STR-FORMULAKEY sy-vline 
WA_ISAGSUBCOMP_STR-STORAGELOCATION sy-vline 
WA_ISAGSUBCOMP_STR-PRODUCTIONSUPPLYAREA sy-vline 
WA_ISAGSUBCOMP_STR-BATCH sy-vline 
WA_ISAGSUBCOMP_STR-BOMITEMDESCRIPTION sy-vline 
WA_ISAGSUBCOMP_STR-BOMITEMTEXT2 sy-vline 
WA_ISAGSUBCOMP_STR-CHANGENUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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