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(Quick Reference) # 6.5.2.6 Database Indices - Reference Documentation Authors: Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari Version: 2.3.8 ## 6.5.2.6 Database Indices To get the best performance out of your queries it is often necessary to tailor the table index definitions. How you tailor them is domain specific and a matter of monitoring usage patterns of your queries. With GORM's DSL you can specify which columns are used in which indexes:
    class Person {
        String firstName
        String address
        static mapping = {
            table 'people'
            version false
            id column: 'person_id'
            firstName column: 'First_Name', index: 'Name_Idx'
            address column: 'Address', index: 'Name_Idx,Address_Index'
        }
    }
Note that you cannot have any spaces in the value of the `index` attribute; in this example `index:'Name_Idx, Address_Index'` will cause an error. | Quick Reference (hide)