mabel-dev · joocer · Jan 18, 2025 · Jan 18, 2025 · Jan 18, 2025 · Jan 18, 2025
diff --git a/opteryx/__version__.py b/opteryx/__version__.py
@@ -1,4 +1,4 @@
-__build__ = 994
+__build__ = 996
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

diff --git a/opteryx/operators/__init__.py b/opteryx/operators/__init__.py
@@ -12,6 +12,7 @@
 from .aggregate_node import AGGREGATORS
 from .aggregate_node import AggregateNode  # aggregate data
 from .async_read_node import AsyncReaderNode
+from .simple_aggregate_node import SimpleAggregateNode  # aggregate data
 
 # from .build_statistics_node import BuildStatisticsNode  # Analyze Tables
 from .cross_join_node import CrossJoinNode  # CROSS JOIN

diff --git a/opteryx/operators/simple_aggregate_node.py b/opteryx/operators/simple_aggregate_node.py
@@ -0,0 +1,154 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# See the License at http://www.apache.org/licenses/LICENSE-2.0
+# Distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND.
+
+"""
+Simple Aggregation Node
+
+This is a SQL Query Execution Plan Node.
+
+This node performs aggregates without performing groupings, this is a specialized version
+which focuses on building aggregates which don't require seeing the entire dataset at a time.
+
+We avoid doing some work by not creating entire columns of data where possible.
+"""
+
+import pyarrow
+
+from opteryx import EOS
+from opteryx.managers.expression import NodeType
+from opteryx.managers.expression import evaluate_and_append
+from opteryx.models import QueryProperties
+from opteryx.operators.aggregate_node import extract_evaluations
+
+from . import BasePlanNode
+
+
+class SimpleAggregateCollector:
+    def __init__(self, aggregate_type, column_id, count_nulls=False):
+        self.aggregate_type = aggregate_type
+        self.current_value = None
+        self.count_nulls = count_nulls if aggregate_type == "COUNT" else False
+        self.counter = 0
+        self.column_id = column_id
+
+    def collect(self, values):
+        if self.count_nulls:
+            self.counter += pyarrow.compute.count(values).as_py()
+        else:
+            self.counter += pyarrow.compute.count(values, mode="only_valid").as_py()
+
+        if self.current_value is None:
+            if self.aggregate_type in ("SUM", "AVG"):
+                self.current_value = pyarrow.compute.sum(values).as_py()
+            elif self.aggregate_type == "MIN":
+                self.current_value = pyarrow.compute.min(values).as_py()
+            elif self.aggregate_type == "MAX":
+                self.current_value = pyarrow.compute.max(values).as_py()
+            elif self.aggregate_type != "COUNT":
+                raise ValueError(f"Unsupported aggregate type: {self.aggregate_type}")
+        else:
+            if self.aggregate_type in ("SUM", "AVG"):
+                self.current_value += pyarrow.compute.sum(values).as_py()
+            elif self.aggregate_type == "MIN":
+                self.current_value = min(self.current_value, pyarrow.compute.min(values).as_py())
+            elif self.aggregate_type == "MAX":
+                self.current_value = max(self.current_value, pyarrow.compute.max(values).as_py())
+            elif self.aggregate_type != "COUNT":
+                raise ValueError(f"Unsupported aggregate type: {self.aggregate_type}")
+
+    def collect_literal(self, literal, count):
+        self.counter += count
+
+        if self.current_value is None:
+            if self.aggregate_type in ("SUM", "AVG"):
+                self.current_value = literal * count
+            elif self.aggregate_type == "MIN" or self.aggregate_type == "MAX":
+                self.current_value = literal
+            elif self.aggregate_type != "COUNT":
+                raise ValueError(f"Unsupported aggregate type: {self.aggregate_type}")
+        else:
+            if self.aggregate_type in ("SUM", "AVG"):
+                self.current_value += literal * count
+            elif self.aggregate_type == "MIN":
+                self.current_value = min(self.current_value, literal)
+            elif self.aggregate_type == "MAX":
+                self.current_value = max(self.current_value, literal)
+            elif self.aggregate_type != "COUNT":
+                raise ValueError(f"Unsupported aggregate type: {self.aggregate_type}")
+
+    def get_result(self):
+        if self.aggregate_type == "AVG":
+            if self.counter == 0 or self.current_value is None:
+                return None
+            return self.current_value / self.counter
+        if self.aggregate_type == "COUNT":
+            return self.counter
+        return self.current_value
+
+
+class SimpleAggregateNode(BasePlanNode):
+    SIMPLE_AGGREGATES = {"SUM", "MIN", "MAX", "AVG", "COUNT"}
+
+    def __init__(self, properties: QueryProperties, **parameters):
+        BasePlanNode.__init__(self, properties=properties, **parameters)
+
+        self.aggregates = parameters.get("aggregates", [])
+
+        # Get any functions we need to execute before aggregating
+        self.evaluatable_nodes = extract_evaluations(self.aggregates)
+
+        # Create collectors for each aggregate
+        self.accumulator = {}
+        for aggregate in self.aggregates:
+            aggregate_type = aggregate.value
+            final_column_id = aggregate.schema_column.identity
+
+            self.accumulator[final_column_id] = SimpleAggregateCollector(
+                aggregate_type, final_column_id
+            )
+
+    @property
+    def config(self):  # pragma: no cover
+        return str(self.aggregates)
+
+    @property
+    def name(self):  # pragma: no cover
+        return "Aggregation (Simple)"
+
+    def execute(self, morsel: pyarrow.Table, **kwargs) -> pyarrow.Table:
+        if morsel == EOS:
+            names = []
+            values = []
+            for k, v in self.accumulator.items():
+                names.append(k)
+                values.append([v.get_result()])
+            yield pyarrow.Table.from_arrays(values, names=names)
+            yield EOS
+            return
+
+        # Allow grouping by functions by evaluating them first
+        if self.evaluatable_nodes:
+            morsel = evaluate_and_append(self.evaluatable_nodes, morsel)
+
+        for aggregate in self.aggregates:
+            if aggregate.node_type in (NodeType.AGGREGATOR,):
+                column_node = aggregate.parameters[0]
+
+                if column_node.node_type == NodeType.LITERAL:
+                    self.accumulator[aggregate.schema_column.identity].collect_literal(
+                        column_node.value, morsel.num_rows
+                    )
+                elif column_node.node_type == NodeType.WILDCARD:
+                    if "$COUNT(*)" in morsel.column_names:
+                        self.accumulator[aggregate.schema_column.identity].collect_literal(
+                            1, morsel["$COUNT(*)"][0].as_py()
+                        )
+                    else:
+                        self.accumulator[aggregate.schema_column.identity].collect_literal(
+                            1, morsel.num_rows
+                        )
+                else:
+                    raw_column_values = morsel[column_node.schema_column.identity]
+                    self.accumulator[aggregate.schema_column.identity].collect(raw_column_values)
diff --git a/opteryx/planner/physical_planner.py b/opteryx/planner/physical_planner.py
@@ -4,8 +4,6 @@
 # Distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND.
 
 
-from orso.schema import OrsoTypes
-
 from opteryx import operators as operators
 from opteryx.exceptions import InvalidInternalStateError
 from opteryx.exceptions import UnsupportedSyntaxError
@@ -23,11 +21,12 @@ def create_physical_plan(logical_plan, query_properties) -> PhysicalPlan:
 
         # fmt: off
         if node_type == LogicalPlanStepType.Aggregate:
-            node = operators.AggregateNode(query_properties, **{k:v for k,v in node_config.items() if k in ("aggregates", "all_relations")})
+            if all(agg.value in operators.SimpleAggregateNode.SIMPLE_AGGREGATES for agg in node_config["aggregates"]):
+                node = operators.SimpleAggregateNode(query_properties, **{k:v for k,v in node_config.items() if k in ("aggregates", "all_relations")})
+            else:
+                node = operators.AggregateNode(query_properties, **{k:v for k,v in node_config.items() if k in ("aggregates", "all_relations")})
         elif node_type == LogicalPlanStepType.AggregateAndGroup:
             node = operators.AggregateAndGroupNode(query_properties, **{k:v for k,v in node_config.items() if k in ("aggregates", "groups", "projection", "all_relations")})
-        #        elif node_type == LogicalPlanStepType.Defragment:
-        #            node = operators.MorselDefragmentNode(query_properties, **node_config)
         elif node_type == LogicalPlanStepType.Distinct:
             node = operators.DistinctNode(query_properties, **node_config)
         elif node_type == LogicalPlanStepType.Exit:

diff --git a/tests/query_execution/test_agg_avg.py b/tests/query_execution/test_agg_avg.py
@@ -0,0 +1,41 @@
+import os
+import sys
+
+sys.path.insert(1, os.path.join(sys.path[0], "../.."))
+
+import opteryx
+
+def test_avg_parquet():
+    cur = opteryx.query("SELECT AVG(followers) FROM testdata.flat.formats.parquet")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 3081.258, first
+
+def test_avg_non_parquet():
+    cur = opteryx.query("SELECT AVG(followers) FROM testdata.flat.ten_files;")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 250, stats["rows_read"]
+    assert stats["rows_seen"] == 250, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 7500362.668, first
+
+def test_avg_group_by():
+    """ we're reading data from the file, even though it starts SELECT COUNT(*) FROM """
+    cur = opteryx.query(
+        "SELECT AVG(followers) FROM testdata.flat.formats.parquet GROUP BY tweet_id ORDER BY tweet_id;"
+    )
+    stats = cur.stats
+    assert stats["columns_read"] == 2, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 6.0, first
+
+if __name__ == "__main__":  # pragma: no cover
+    from tests.tools import run_tests
+
+    run_tests()
diff --git a/tests/query_execution/test_count_star.py → tests/query_execution/test_agg_count.py b/tests/query_execution/test_count_star.py → tests/query_execution/test_agg_count.py
@@ -20,7 +20,8 @@ def test_count_star_parquet():
     assert stats["columns_read"] <= 1, stats["columns_read"]
     assert stats["rows_read"] == 1, stats["rows_read"]
     assert stats["rows_seen"] == 100000, stats["rows_seen"]
-    assert cur.fetchone()[0] == 100000
+    first = cur.fetchone()[0]
+    assert first == 100000, first
 
 def test_count_star_non_parquet():
     """ if is just SELECT COUNT(*) for non-parquet files, we read the rows"""
@@ -38,7 +39,8 @@ def test_count_star_parquest_read_the_rows():
     assert stats["columns_read"] <= 1, stats["columns_read"]
     assert stats["rows_read"] == 100000, stats["rows_read"]
     assert stats["rows_seen"] == 100000, stats["rows_seen"]
-    assert cur.fetchone()[0] == 100000
+    first = cur.fetchone()[0]
+    assert first == 100000, first
 
 def test_count_star_group_by():
     """ we're reading data from the file, even though it starts SELECT COUNT(*) FROM """

diff --git a/tests/query_execution/test_agg_max.py b/tests/query_execution/test_agg_max.py
@@ -0,0 +1,41 @@
+import os
+import sys
+
+sys.path.insert(1, os.path.join(sys.path[0], "../.."))
+
+import opteryx
+
+def test_max_parquet():
+    cur = opteryx.query("SELECT MAX(followers) FROM testdata.flat.formats.parquet")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 8266250, first
+
+def test_max_non_parquet():
+    cur = opteryx.query("SELECT MAX(followers) FROM testdata.flat.ten_files;")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 250, stats["rows_read"]
+    assert stats["rows_seen"] == 250, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 10415949, first
+
+def test_max_group_by():
+    """ we're reading data from the file, even though it starts SELECT COUNT(*) FROM """
+    cur = opteryx.query(
+        "SELECT MAX(followers) FROM testdata.flat.formats.parquet GROUP BY tweet_id ORDER BY tweet_id;"
+    )
+    stats = cur.stats
+    assert stats["columns_read"] == 2, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 6.0, first
+
+if __name__ == "__main__":  # pragma: no cover
+    from tests.tools import run_tests
+
+    run_tests()
diff --git a/tests/query_execution/test_agg_min.py b/tests/query_execution/test_agg_min.py
@@ -0,0 +1,41 @@
+import os
+import sys
+
+sys.path.insert(1, os.path.join(sys.path[0], "../.."))
+
+import opteryx
+
+def test_min_parquet():
+    cur = opteryx.query("SELECT MIN(followers) FROM testdata.flat.formats.parquet")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 0, first
+
+def test_min_non_parquet():
+    cur = opteryx.query("SELECT MIN(followers) FROM testdata.flat.ten_files;")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 250, stats["rows_read"]
+    assert stats["rows_seen"] == 250, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 100, first
+
+def test_min_group_by():
+    """ we're reading data from the file, even though it starts SELECT COUNT(*) FROM """
+    cur = opteryx.query(
+        "SELECT MIN(followers) FROM testdata.flat.formats.parquet GROUP BY tweet_id ORDER BY tweet_id;"
+    )
+    stats = cur.stats
+    assert stats["columns_read"] == 2, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 6.0, first
+
+if __name__ == "__main__":  # pragma: no cover
+    from tests.tools import run_tests
+
+    run_tests()
diff --git a/tests/query_execution/test_agg_sum.py b/tests/query_execution/test_agg_sum.py
@@ -0,0 +1,41 @@
+import os
+import sys
+
+sys.path.insert(1, os.path.join(sys.path[0], "../.."))
+
+import opteryx
+
+def test_sum_parquet():
+    cur = opteryx.query("SELECT SUM(followers) FROM testdata.flat.formats.parquet")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 308125800, first
+
+def test_sum_non_parquet():
+    cur = opteryx.query("SELECT SUM(followers) FROM testdata.flat.ten_files;")
+    stats = cur.stats
+    assert stats["columns_read"] == 1, stats["columns_read"]
+    assert stats["rows_read"] == 250, stats["rows_read"]
+    assert stats["rows_seen"] == 250, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 1875090667, first
+
+def test_sum_group_by():
+    """ we're reading data from the file, even though it starts SELECT COUNT(*) FROM """
+    cur = opteryx.query(
+        "SELECT SUM(followers) FROM testdata.flat.formats.parquet GROUP BY tweet_id ORDER BY tweet_id;"
+    )
+    stats = cur.stats
+    assert stats["columns_read"] == 2, stats["columns_read"]
+    assert stats["rows_read"] == 100000, stats["rows_read"]
+    assert stats["rows_seen"] == 100000, stats["rows_seen"]
+    first = cur.fetchone()[0]
+    assert first == 6.0, first
+
+if __name__ == "__main__":  # pragma: no cover
+    from tests.tools import run_tests
+
+    run_tests()