ABAP Select data from SAP table CMMSCAGTITEMHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMSCAGTITEMHIST
*  INTO TABLE @DATA(IT_CMMSCAGTITEMHIST2).
*--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_CMMSCAGTITEMHIST INDEX 1 INTO DATA(WA_CMMSCAGTITEMHIST2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMSCAGTITEMHIST-PURCHASEORDERTRANSACTIONTYPE, sy-vline,
  WA_CMMSCAGTITEMHIST-MATERIALDOCUMENT, sy-vline,
  WA_CMMSCAGTITEMHIST-MATERIALDOCUMENTITEM, sy-vline,
  WA_CMMSCAGTITEMHIST-MATERIALDOCUMENTYEAR, sy-vline,
  WA_CMMSCAGTITEMHIST-SUPPLIER, sy-vline,
  WA_CMMSCAGTITEMHIST-PURCHASINGORGANIZATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMSCAGTITEMHIST 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_CMMSCAGTITEMHIST 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_CMMSCAGTITEMHIST INTO WA_CMMSCAGTITEMHIST.


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

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

*Conversion exit GJAHR, internal->external for field MATERIALDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMMSCAGTITEMHIST-MATERIALDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMSCAGTITEMHIST-MATERIALDOCUMENTYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field ORDERQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMMSCAGTITEMHIST-ORDERQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMSCAGTITEMHIST-ORDERQUANTITYUNIT.
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_CMMSCAGTITEMHIST_STR, 
MANDT TYPE STRING,
SCHEDULINGAGREEMENT TYPE STRING,
SCHEDULINGAGREEMENTITEM TYPE STRING,
SCHEDULELINE TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
PURCHASEORDERTRANSACTIONTYPE TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTITEM TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
COMPANYCODE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIAL TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
PURGCATNAME TYPE STRING,
PURCHASINGDOCUMENTORDERDATE TYPE STRING,
SCHEDULELINEDELIVERYDATE TYPE STRING,
CALENDARWEEK TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARYEAR TYPE STRING,
PRODUCTTYPE TYPE STRING,
MATERIALTYPE TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
SCHEDULELINEORDERQUANTITY TYPE STRING,
GOODSRECEIPTQUANTITY TYPE STRING,
TARGETQUANTITY TYPE STRING,
TARGETQUANTITYINBASEUNIT TYPE STRING,
AVERAGETARGETQUANTITY TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
AVERAGETARGETAMOUNT TYPE STRING,
TARGETAMOUNTINDISPLAYCURRENCY TYPE STRING,
SCHEDULINGAGREEMENTSPEND TYPE STRING,
SCHEDULELINEEXPECTEDSPEND TYPE STRING,
GOODSRECEIPTAMOUNTINDSPCRCY TYPE STRING,
INVOICEAMTINDISPLAYCURRENCY TYPE STRING,
NUMBEROFITEMS TYPE STRING,
NUMBEROFSCHEDULELINES TYPE STRING,
WEIGHTEDNETPRICE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMSCAGTITEMHIST_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_CMMSCAGTITEMHIST_STR-MANDT sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULINGAGREEMENT sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULELINE sy-vline 
WA_CMMSCAGTITEMHIST_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURCHASEORDERTRANSACTIONTYPE sy-vline 
WA_CMMSCAGTITEMHIST_STR-MATERIALDOCUMENT sy-vline 
WA_CMMSCAGTITEMHIST_STR-MATERIALDOCUMENTITEM sy-vline 
WA_CMMSCAGTITEMHIST_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_CMMSCAGTITEMHIST_STR-SUPPLIER sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURCHASINGORGANIZATION sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURCHASINGGROUP sy-vline 
WA_CMMSCAGTITEMHIST_STR-COMPANYCODE sy-vline 
WA_CMMSCAGTITEMHIST_STR-DOCUMENTCURRENCY sy-vline 
WA_CMMSCAGTITEMHIST_STR-VALIDITYSTARTDATE sy-vline 
WA_CMMSCAGTITEMHIST_STR-VALIDITYENDDATE sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_CMMSCAGTITEMHIST_STR-PLANT sy-vline 
WA_CMMSCAGTITEMHIST_STR-STORAGELOCATION sy-vline 
WA_CMMSCAGTITEMHIST_STR-MATERIALGROUP sy-vline 
WA_CMMSCAGTITEMHIST_STR-MATERIAL sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURCHASINGCATEGORY sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURGCATNAME sy-vline 
WA_CMMSCAGTITEMHIST_STR-PURCHASINGDOCUMENTORDERDATE sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULELINEDELIVERYDATE sy-vline 
WA_CMMSCAGTITEMHIST_STR-CALENDARWEEK sy-vline 
WA_CMMSCAGTITEMHIST_STR-CALENDARMONTH sy-vline 
WA_CMMSCAGTITEMHIST_STR-CALENDARQUARTER sy-vline 
WA_CMMSCAGTITEMHIST_STR-CALENDARYEAR sy-vline 
WA_CMMSCAGTITEMHIST_STR-PRODUCTTYPE sy-vline 
WA_CMMSCAGTITEMHIST_STR-MATERIALTYPE sy-vline 
WA_CMMSCAGTITEMHIST_STR-ORDERQUANTITYUNIT sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULELINEORDERQUANTITY sy-vline 
WA_CMMSCAGTITEMHIST_STR-GOODSRECEIPTQUANTITY sy-vline 
WA_CMMSCAGTITEMHIST_STR-TARGETQUANTITY sy-vline 
WA_CMMSCAGTITEMHIST_STR-TARGETQUANTITYINBASEUNIT sy-vline 
WA_CMMSCAGTITEMHIST_STR-AVERAGETARGETQUANTITY sy-vline 
WA_CMMSCAGTITEMHIST_STR-DISPLAYCURRENCY sy-vline 
WA_CMMSCAGTITEMHIST_STR-AVERAGETARGETAMOUNT sy-vline 
WA_CMMSCAGTITEMHIST_STR-TARGETAMOUNTINDISPLAYCURRENCY sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULINGAGREEMENTSPEND sy-vline 
WA_CMMSCAGTITEMHIST_STR-SCHEDULELINEEXPECTEDSPEND sy-vline 
WA_CMMSCAGTITEMHIST_STR-GOODSRECEIPTAMOUNTINDSPCRCY sy-vline 
WA_CMMSCAGTITEMHIST_STR-INVOICEAMTINDISPLAYCURRENCY sy-vline 
WA_CMMSCAGTITEMHIST_STR-NUMBEROFITEMS sy-vline 
WA_CMMSCAGTITEMHIST_STR-NUMBEROFSCHEDULELINES sy-vline 
WA_CMMSCAGTITEMHIST_STR-WEIGHTEDNETPRICE sy-vline      INTO ld_text SEPARATED BY SPACE.

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