Static Methods

You can register a tracer to monitor the performance of all SQLs.
It returns

1. The collection of SQLs and the executions count of each SQL.
   
2. Time consuming in nanoseconds.
   
3. Tag of database.
   

Note that:

1. You should register trace before all db operations.
   

2. Global tracer will be recovered by db tracer.

   Database.globalTrace(ofPerformance: { (tag, sqls, cost) in if let wrappedTag = tag { print(Tag: \(wrappedTag)) }else { print(Nil tag) } sqls.forEach({ (arg) in print(SQL: \(arg.key) Count: \(arg.value)) }) print(Total cost \(cost) nanoseconds) })

Tracer may cause wcdb performance degradation, according to your needs to choose whether to open.

You can register a tracer to monitor the execution of all SQLs.
It returns a prepared or executed SQL.
Note that you should register trace before all db operations.

Database.globalTrace(ofSQL: { (sql) in
    print("SQL: \(sql)")
})

Tracer may cause wcdb performance degradation, according to your needs to choose whether to open.

You can register a reporter to monitor all errors.

Database.globalTrace(ofError: { (error) in
    switch error.type {
    case .sqliteGlobal:
        debugPrint("[WCDB][DEBUG] \(error.description)")
    case .warning:
        print("[WCDB][WARNING] \(error.description)")
    default:
        print("[WCDB][ERROR] \(error.description)")
    }
 })

Reset global error trace to default trace.