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GRDBが実行しているsqlを出力する方法

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はじめに

GRDBでinsertやupdateを発行した際、実際に実行されているsqlを確認する方法について記載します。ログ出力などにも活用できると思います。

実装

DatabaseQueueを生成する際にconfigrationを指定します。

var config = Configuration()
config.prepareDatabase { db in
    db.trace {
        let description = $0.description
        print(description)
    }
}
let dbQueue = try DatabaseQueue(path: Const.DB_FILE_PATH, configuration: config)
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