== Abstract Syntax Tree ==
LogicalSink(table=[fluss.nexmark.output_bb16552d9f1744e4ad30ab2aa891b678], fields=[auction, bidder, price, channel, channel_id])
+- LogicalProject(auction=[$0], bidder=[$1], price=[$2], channel=[$3], channel_id=[CASE(=(LOWER($3), _UTF-16LE'apple'), _UTF-16LE'0':VARCHAR(2147483647) CHARACTER SET "UTF-16LE", =(LOWER($3), _UTF-16LE'google'), _UTF-16LE'1':VARCHAR(2147483647) CHARACTER SET "UTF-16LE", =(LOWER($3), _UTF-16LE'facebook'), _UTF-16LE'2':VARCHAR(2147483647) CHARACTER SET "UTF-16LE", =(LOWER($3), _UTF-16LE'baidu'), _UTF-16LE'3':VARCHAR(2147483647) CHARACTER SET "UTF-16LE", REGEXP_EXTRACT($4, _UTF-16LE'(&|^)channel_id=([^&]*)', 2))])
   +- LogicalFilter(condition=[OR(IS NOT NULL(REGEXP_EXTRACT($4, _UTF-16LE'(&|^)channel_id=([^&]*)', 2)), =(LOWER($3), _UTF-16LE'apple'), =(LOWER($3), _UTF-16LE'google'), =(LOWER($3), _UTF-16LE'facebook'), =(LOWER($3), _UTF-16LE'baidu'))])
      +- LogicalProject(auction=[$3.auction], bidder=[$3.bidder], price=[$3.price], channel=[$3.channel], url=[$3.url], dateTime=[$5], extra=[$3.extra])
         +- LogicalFilter(condition=[=($0, 2)])
            +- LogicalProject(event_type=[$0], person=[$1], auction=[$2], bid=[$3], dateTime=[$4], rowtime=[$5])
               +- LogicalWatermarkAssigner(rowtime=[rowtime], watermark=[-($5, 4000:INTERVAL SECOND)])
                  +- LogicalProject(event_type=[$0], person=[$1], auction=[$2], bid=[$3], dateTime=[$4], rowtime=[TO_TIMESTAMP_LTZ($4, 3)])
                     +- LogicalTableScan(table=[[fluss, nexmark, events]])

== Optimized Physical Plan ==
NativeFlussSink(reuseBarrier=[2733])
+- NativeCalc(reuseBarrier=[2732])
   +- NativeFlussSource(table=[nexmark.events], reuseBarrier=[2731])

== Optimized Execution Plan ==
NativeFlussSink
+- NativeCalc
   +- NativeFlussSource(table=[nexmark.events])

== Physical Execution Plan ==
{
  "nodes" : [ {
    "id" : 4025,
    "type" : "Source: native-fluss-source",
    "pact" : "Data Source",
    "contents" : "Source: native-fluss-source",
    "parallelism" : 4
  }, {
    "id" : 4026,
    "type" : "NativeCalcExecNode[2580]",
    "pact" : "Operator",
    "contents" : "[2580]:NativeCalc",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 4025,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  }, {
    "id" : 4028,
    "type" : "native-fluss-append-sink: Writer",
    "pact" : "Operator",
    "contents" : "native-fluss-append-sink: Writer",
    "parallelism" : 4,
    "predecessors" : [ {
      "id" : 4026,
      "ship_strategy" : "FORWARD",
      "side" : "second"
    } ]
  } ]
}