diff --git a/tests/cases/distributed/explain/step_aggr_advance.result b/tests/cases/distributed/explain/step_aggr_advance.result
index e4d58eb22f4..d3aaea79bcf 100644
--- a/tests/cases/distributed/explain/step_aggr_advance.result
+++ b/tests/cases/distributed/explain/step_aggr_advance.result
@@ -429,7 +429,7 @@ tql analyze sum(aggr_optimize_not);
 |_|_|_ProjectionExec: expr=[greptime_timestamp@4 as greptime_timestamp, greptime_value@5 as greptime_value] REDACTED
 |_|_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[300000], time index=[greptime_timestamp] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["a", "b", "c", "d"] REDACTED
-|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "mode":"legacy" REDACTED
+|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "mode":"legacy" REDACTED
 |_|_|_|
 | 1_| 1_|_AggregateExec: mode=FinalPartitioned, gby=[greptime_timestamp@0 as greptime_timestamp], aggr=[__sum_state(aggr_optimize_not.greptime_value)] REDACTED
 |_|_|_RepartitionExec: partitioning=REDACTED
@@ -437,7 +437,7 @@ tql analyze sum(aggr_optimize_not);
 |_|_|_ProjectionExec: expr=[greptime_timestamp@4 as greptime_timestamp, greptime_value@5 as greptime_value] REDACTED
 |_|_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[300000], time index=[greptime_timestamp] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["a", "b", "c", "d"] REDACTED
-|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "mode":"legacy" REDACTED
+|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "mode":"legacy" REDACTED
 |_|_|_|
 |_|_| Total rows: 0_|
 +-+-+-+
diff --git a/tests/cases/distributed/optimizer/last_value_advance.result b/tests/cases/distributed/optimizer/last_value_advance.result
index 6269c5d397f..0972741b171 100644
--- a/tests/cases/distributed/optimizer/last_value_advance.result
+++ b/tests/cases/distributed/optimizer/last_value_advance.result
@@ -113,7 +113,7 @@ explain analyze
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
@@ -165,7 +165,7 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[last_value(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[last_value(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
@@ -277,7 +277,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_ProjectionExec: expr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST]@0 as ordered_host, last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST]@1 as last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]@2 as last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_SortPreservingMergeExec: [last_value(t.host) ORDER BY [t.ts ASC NULLS LAST]@0 ASC NULLS LAST] REDACTED
@@ -286,7 +286,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_ProjectionExec: expr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST]@0 as ordered_host, last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST]@1 as last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]@2 as last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_SortPreservingMergeExec: [last_value(t.host) ORDER BY [t.ts ASC NULLS LAST]@0 ASC NULLS LAST] REDACTED
@@ -295,7 +295,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
@@ -355,17 +355,17 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
@@ -559,17 +559,17 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
@@ -648,7 +648,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_ProjectionExec: expr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST]@0 as ordered_host, last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]@1 as last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_SortPreservingMergeExec: [last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST]@0 ASC NULLS LAST] REDACTED
@@ -657,7 +657,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_ProjectionExec: expr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST]@0 as ordered_host, last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]@1 as last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_SortPreservingMergeExec: [last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST]@0 ASC NULLS LAST] REDACTED
@@ -666,7 +666,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
diff --git a/tests/cases/standalone/common/promql/regex.result b/tests/cases/standalone/common/promql/regex.result
index 68ba21dca7d..bccbd0f3402 100644
--- a/tests/cases/standalone/common/promql/regex.result
+++ b/tests/cases/standalone/common/promql/regex.result
@@ -75,7 +75,7 @@ TQL ANALYZE VERBOSE (0, 0, '1s') test{host=~".*"};
 | 1_| 0_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[1000], time index=[ts] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["host"] REDACTED
 |_|_|_CooperativeExec REDACTED
-|_|_|_SeriesScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "projection": ["ts", "host", "val"], "filters": ["ts >= TimestampMillisecond(-299999, None)", "ts <= TimestampMillisecond(0, None)"], "REDACTED
+|_|_|_SeriesScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "projection": ["ts", "host", "val"], "filters": ["ts >= TimestampMillisecond(-299999, None)", "ts <= TimestampMillisecond(0, None)"], "REDACTED
 |_|_|_|
 |_|_| Total rows: 2_|
 +-+-+-+
@@ -99,7 +99,7 @@ TQL ANALYZE VERBOSE (0, 0, '1s') test{host=~".+"};
 | 1_| 0_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[1000], time index=[ts] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["host"] REDACTED
 |_|_|_CooperativeExec REDACTED
-|_|_|_SeriesScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "projection": ["ts", "host", "val"], "filters": ["host != Dictionary(UInt32, Utf8(\"\"))", "ts >= TimestampMillisecond(-299999, None)", "ts <= TimestampMillisecond(0, None)"], "REDACTED
+|_|_|_SeriesScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "projection": ["ts", "host", "val"], "filters": ["host != Dictionary(UInt32, Utf8(\"\"))", "ts >= TimestampMillisecond(-299999, None)", "ts <= TimestampMillisecond(0, None)"], "REDACTED
 |_|_|_|
 |_|_| Total rows: 2_|
 +-+-+-+
@@ -145,7 +145,7 @@ TQL ANALYZE VERBOSE (0, 0, '1s') test{host!~".+"};
 | 1_| 0_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[1000], time index=[ts] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["host"] REDACTED
 |_|_|_CooperativeExec REDACTED
-|_|_|_SeriesScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "projection": ["ts", "host", "val"], "filters": ["host = Dictionary(UInt32, Utf8(\"\"))", "ts >= TimestampMillisecond(-299999, None)", "ts <= TimestampMillisecond(0, None)"], "REDACTED
+|_|_|_SeriesScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "projection": ["ts", "host", "val"], "filters": ["host = Dictionary(UInt32, Utf8(\"\"))", "ts >= TimestampMillisecond(-299999, None)", "ts <= TimestampMillisecond(0, None)"], "REDACTED
 |_|_|_|
 |_|_| Total rows: 0_|
 +-+-+-+
diff --git a/tests/cases/standalone/optimizer/last_value.result b/tests/cases/standalone/optimizer/last_value.result
index 42d08f5b123..55ecfc8bb56 100644
--- a/tests/cases/standalone/optimizer/last_value.result
+++ b/tests/cases/standalone/optimizer/last_value.result
@@ -87,7 +87,7 @@ explain analyze
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
@@ -139,7 +139,7 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[last_value(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[last_value(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
diff --git a/tests/cases/standalone/optimizer/last_value_advance.result b/tests/cases/standalone/optimizer/last_value_advance.result
index 3199692a73d..15e5ca80cbf 100644
--- a/tests/cases/standalone/optimizer/last_value_advance.result
+++ b/tests/cases/standalone/optimizer/last_value_advance.result
@@ -113,7 +113,7 @@ explain analyze
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
@@ -165,7 +165,7 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[last_value(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[last_value(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":0, "files":1, "file_ranges":1}, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
@@ -276,7 +276,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_SortPreservingMergeExec: [ordered_host@0 ASC NULLS LAST] REDACTED
 |_|_|_SortExec: expr=[ordered_host@0 ASC NULLS LAST], preserve_REDACTED
@@ -284,7 +284,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_SortPreservingMergeExec: [ordered_host@0 ASC NULLS LAST] REDACTED
 |_|_|_SortExec: expr=[ordered_host@0 ASC NULLS LAST], preserve_REDACTED
@@ -292,7 +292,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@1 as host], aggr=[last_value(t.host) ORDER BY [t.ts ASC NULLS LAST], last_value(t.not_pk) ORDER BY [t.ts ASC NULLS LAST], last_value(t.val) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
@@ -352,17 +352,17 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t.ts) ORDER BY [t.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
@@ -556,17 +556,17 @@ explain analyze
 | 1_| 0_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_AggregateExec: mode=Final, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_CoalescePartitionsExec REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[], aggr=[__last_value_state(t1.ts) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 1_|
 +-+-+-+
@@ -644,7 +644,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 1_|_SortPreservingMergeExec: [ordered_host@0 ASC NULLS LAST] REDACTED
 |_|_|_SortExec: expr=[ordered_host@0 ASC NULLS LAST], preserve_REDACTED
@@ -652,7 +652,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 | 1_| 2_|_SortPreservingMergeExec: [ordered_host@0 ASC NULLS LAST] REDACTED
 |_|_|_SortExec: expr=[ordered_host@0 ASC NULLS LAST], preserve_REDACTED
@@ -660,7 +660,7 @@ order by ordered_host;
 |_|_|_AggregateExec: mode=FinalPartitioned, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
 |_|_|_RepartitionExec: REDACTED
 |_|_|_AggregateExec: mode=Partial, gby=[host@0 as host], aggr=[last_value(t1.host) ORDER BY [t1.ts ASC NULLS LAST], last_value(t1.val) ORDER BY [t1.ts ASC NULLS LAST]] REDACTED
-|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow" REDACTED
+|_|_|_SeqScan: region=REDACTED, "partition_count":REDACTED, "selector":"LastRow { after_merge: false }" REDACTED
 |_|_|_|
 |_|_| Total rows: 4_|
 +-+-+-+
diff --git a/tests/cases/standalone/tql-explain-analyze/analyze.result b/tests/cases/standalone/tql-explain-analyze/analyze.result
index 25d56daaaaa..cbbce8eaf1b 100644
--- a/tests/cases/standalone/tql-explain-analyze/analyze.result
+++ b/tests/cases/standalone/tql-explain-analyze/analyze.result
@@ -297,7 +297,7 @@ TQL ANALYZE sum(test2);
 |_|_|_ProjectionExec: expr=[greptime_timestamp@0 as greptime_timestamp, greptime_value@1 as greptime_value] REDACTED
 |_|_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[300000], time index=[greptime_timestamp] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["shard"] REDACTED
-|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "mode":"legacy" REDACTED
+|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "mode":"legacy" REDACTED
 |_|_|_|
 | 1_| 1_|_AggregateExec: mode=FinalPartitioned, gby=[greptime_timestamp@0 as greptime_timestamp], aggr=[__sum_state(test2.greptime_value)] REDACTED
 |_|_|_RepartitionExec: partitioning=REDACTED
@@ -305,7 +305,7 @@ TQL ANALYZE sum(test2);
 |_|_|_ProjectionExec: expr=[greptime_timestamp@0 as greptime_timestamp, greptime_value@1 as greptime_value] REDACTED
 |_|_|_PromInstantManipulateExec: range=[0..0], lookback=[300000], interval=[300000], time index=[greptime_timestamp] REDACTED
 |_|_|_PromSeriesDivideExec: tags=["shard"] REDACTED
-|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow", "distribution":"PerSeries", "mode":"legacy" REDACTED
+|_|_|_SeriesScan: region=REDACTED, "partition_count":{"count":0, "mem_ranges":0, "files":0, "file_ranges":0}, "selector":"LastRow { after_merge: true }", "distribution":"PerSeries", "mode":"legacy" REDACTED
 |_|_|_|
 |_|_| Total rows: 0_|
 +-+-+-+