name: "replication status for 3 targets - one failed",
		rs: ReplicationState{
			ReplicationStatusInternal: "arn1=COMPLETED;arn2=COMPLETED;arn3=FAILED;",
			Targets:                   map[string]replication.StatusType{"arn1": "COMPLETED", "arn2": "COMPLETED", "arn3": "FAILED"},
		},
		expStatus: replication.Failed,
	},
	{ // 5. replication status for replica version
		name:      "replication status for replica version",

type SubstringFunc struct {
	Expr *PrimaryTerm `parser:" \"SUBSTRING\" \"(\" @@ "`
	From *Operand     `parser:" ( \"FROM\" @@ "`
	For  *Operand     `parser:"   (\"FOR\" @@)? \")\" "`
	Arg2 *Operand     `parser:" | \",\" @@ "`
	Arg3 *Operand     `parser:"   (\",\" @@)? \")\" )"`
}

// ExtractFunc represents EXTRACT sql function
type ExtractFunc struct {

			if e.Substring.For != nil {
				result.combine(e.Substring.Expr.analyze(s))
			}
		case e.Substring.Arg2 != nil:
			result.combine(e.Substring.Arg2.analyze(s))
			if e.Substring.Arg3 != nil {
				result.combine(e.Substring.Arg3.analyze(s))
			}
		default:
			result.err = errVal
		}
		return result

	case sqlFnUTCNow:
		if len(e.SFunc.ArgsList) != 0 {