540 lines
17 KiB
Python
540 lines
17 KiB
Python
import unittest
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from datetime import date
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import duckdb
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import pandas as pd
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from pandas.testing import assert_frame_equal
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from sqlglot import exp, parse_one
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from sqlglot.errors import ExecuteError
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from sqlglot.executor import execute
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from sqlglot.executor.python import Python
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from sqlglot.executor.table import Table, ensure_tables
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from tests.helpers import (
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FIXTURES_DIR,
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SKIP_INTEGRATION,
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TPCH_SCHEMA,
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load_sql_fixture_pairs,
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)
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DIR = FIXTURES_DIR + "/optimizer/tpc-h/"
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@unittest.skipIf(SKIP_INTEGRATION, "Skipping Integration Tests since `SKIP_INTEGRATION` is set")
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class TestExecutor(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.conn = duckdb.connect()
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for table, columns in TPCH_SCHEMA.items():
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cls.conn.execute(
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f"""
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CREATE VIEW {table} AS
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SELECT *
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FROM READ_CSV('{DIR}{table}.csv.gz', delim='|', header=True, columns={columns})
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"""
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)
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cls.cache = {}
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cls.sqls = [
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(sql, expected)
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for _, sql, expected in load_sql_fixture_pairs("optimizer/tpc-h/tpc-h.sql")
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]
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@classmethod
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def tearDownClass(cls):
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cls.conn.close()
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def cached_execute(self, sql):
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if sql not in self.cache:
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self.cache[sql] = self.conn.execute(sql).fetchdf()
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return self.cache[sql]
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def rename_anonymous(self, source, target):
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for i, column in enumerate(source.columns):
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if "_col_" in column:
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source.rename(columns={column: target.columns[i]}, inplace=True)
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def test_py_dialect(self):
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self.assertEqual(Python().generate(parse_one("'x '''")), r"'x \''")
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def test_optimized_tpch(self):
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for i, (sql, optimized) in enumerate(self.sqls[:20], start=1):
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with self.subTest(f"{i}, {sql}"):
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a = self.cached_execute(sql)
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b = self.conn.execute(optimized).fetchdf()
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self.rename_anonymous(b, a)
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assert_frame_equal(a, b)
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def test_execute_tpch(self):
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def to_csv(expression):
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if isinstance(expression, exp.Table) and expression.name not in ("revenue"):
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return parse_one(
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f"READ_CSV('{DIR}{expression.name}.csv.gz', 'delimiter', '|') AS {expression.alias_or_name}"
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)
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return expression
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for i, (sql, _) in enumerate(self.sqls):
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with self.subTest(f"tpch-h {i + 1}"):
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a = self.cached_execute(sql)
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sql = parse_one(sql).transform(to_csv).sql(pretty=True)
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table = execute(sql, TPCH_SCHEMA)
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b = pd.DataFrame(table.rows, columns=table.columns)
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assert_frame_equal(a, b, check_dtype=False, check_index_type=False)
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def test_execute_callable(self):
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tables = {
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"x": [
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{"a": "a", "b": "d"},
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{"a": "b", "b": "e"},
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{"a": "c", "b": "f"},
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],
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"y": [
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{"b": "d", "c": "g"},
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{"b": "e", "c": "h"},
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{"b": "f", "c": "i"},
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],
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"z": [],
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}
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schema = {
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"x": {
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"a": "VARCHAR",
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"b": "VARCHAR",
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},
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"y": {
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"b": "VARCHAR",
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"c": "VARCHAR",
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},
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"z": {"d": "VARCHAR"},
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}
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for sql, cols, rows in [
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("SELECT * FROM x", ["a", "b"], [("a", "d"), ("b", "e"), ("c", "f")]),
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(
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"SELECT * FROM x JOIN y ON x.b = y.b",
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["a", "b", "b", "c"],
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[("a", "d", "d", "g"), ("b", "e", "e", "h"), ("c", "f", "f", "i")],
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),
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(
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"SELECT j.c AS d FROM x AS i JOIN y AS j ON i.b = j.b",
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["d"],
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[("g",), ("h",), ("i",)],
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),
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(
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"SELECT CONCAT(x.a, y.c) FROM x JOIN y ON x.b = y.b WHERE y.b = 'e'",
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["_col_0"],
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[("bh",)],
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),
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(
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"SELECT * FROM x JOIN y ON x.b = y.b WHERE y.b = 'e'",
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["a", "b", "b", "c"],
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[("b", "e", "e", "h")],
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),
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(
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"SELECT * FROM z",
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["d"],
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[],
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),
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(
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"SELECT d FROM z ORDER BY d",
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["d"],
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[],
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),
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(
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"SELECT a FROM x WHERE x.a <> 'b'",
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["a"],
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[("a",), ("c",)],
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),
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(
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"SELECT a AS i FROM x ORDER BY a",
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["i"],
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[("a",), ("b",), ("c",)],
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),
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(
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"SELECT a AS i FROM x ORDER BY i",
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["i"],
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[("a",), ("b",), ("c",)],
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),
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(
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"SELECT 100 - ORD(a) AS a, a AS i FROM x ORDER BY a",
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["a", "i"],
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[(1, "c"), (2, "b"), (3, "a")],
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),
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(
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"SELECT a /* test */ FROM x LIMIT 1",
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["a"],
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[("a",)],
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),
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(
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"SELECT DISTINCT a FROM (SELECT 1 AS a UNION ALL SELECT 1 AS a)",
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["a"],
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[(1,)],
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),
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(
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"SELECT DISTINCT a, SUM(b) AS b "
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"FROM (SELECT 'a' AS a, 1 AS b UNION ALL SELECT 'a' AS a, 2 AS b UNION ALL SELECT 'b' AS a, 1 AS b) "
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"GROUP BY a "
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"LIMIT 1",
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["a", "b"],
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[("a", 3)],
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),
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(
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"SELECT COUNT(1) AS a FROM (SELECT 1)",
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["a"],
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[(1,)],
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),
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(
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"SELECT COUNT(1) AS a FROM (SELECT 1) LIMIT 0",
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["a"],
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[],
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),
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(
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"SELECT a FROM x GROUP BY a LIMIT 0",
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["a"],
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[],
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),
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(
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"SELECT a FROM x LIMIT 0",
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["a"],
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[],
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),
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]:
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with self.subTest(sql):
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result = execute(sql, schema=schema, tables=tables)
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self.assertEqual(result.columns, tuple(cols))
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self.assertEqual(result.rows, rows)
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def test_set_operations(self):
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tables = {
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"x": [
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{"a": "a"},
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{"a": "b"},
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{"a": "c"},
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],
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"y": [
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{"a": "b"},
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{"a": "c"},
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{"a": "d"},
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],
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}
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schema = {
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"x": {
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"a": "VARCHAR",
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},
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"y": {
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"a": "VARCHAR",
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},
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}
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for sql, cols, rows in [
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(
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"SELECT a FROM x UNION ALL SELECT a FROM y",
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["a"],
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[("a",), ("b",), ("c",), ("b",), ("c",), ("d",)],
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),
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(
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"SELECT a FROM x UNION SELECT a FROM y",
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["a"],
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[("a",), ("b",), ("c",), ("d",)],
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),
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(
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"SELECT a FROM x EXCEPT SELECT a FROM y",
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["a"],
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[("a",)],
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),
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(
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"SELECT a FROM x INTERSECT SELECT a FROM y",
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["a"],
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[("b",), ("c",)],
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),
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(
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"""SELECT i.a
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FROM (
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SELECT a FROM x UNION SELECT a FROM y
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) AS i
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JOIN (
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SELECT a FROM x UNION SELECT a FROM y
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) AS j
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ON i.a = j.a""",
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["a"],
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[("a",), ("b",), ("c",), ("d",)],
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),
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(
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"SELECT 1 AS a UNION SELECT 2 AS a UNION SELECT 3 AS a",
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["a"],
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[(1,), (2,), (3,)],
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),
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]:
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with self.subTest(sql):
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result = execute(sql, schema=schema, tables=tables)
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self.assertEqual(result.columns, tuple(cols))
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self.assertEqual(set(result.rows), set(rows))
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def test_execute_catalog_db_table(self):
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tables = {
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"catalog": {
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"db": {
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"x": [
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{"a": "a"},
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{"a": "b"},
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{"a": "c"},
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],
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}
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}
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}
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schema = {
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"catalog": {
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"db": {
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"x": {
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"a": "VARCHAR",
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}
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}
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}
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}
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result1 = execute("SELECT * FROM x", schema=schema, tables=tables)
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result2 = execute("SELECT * FROM catalog.db.x", schema=schema, tables=tables)
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assert result1.columns == result2.columns
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assert result1.rows == result2.rows
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def test_execute_tables(self):
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tables = {
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"sushi": [
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{"id": 1, "price": 1.0},
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{"id": 2, "price": 2.0},
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{"id": 3, "price": 3.0},
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],
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"order_items": [
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{"sushi_id": 1, "order_id": 1},
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{"sushi_id": 1, "order_id": 1},
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{"sushi_id": 2, "order_id": 1},
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{"sushi_id": 3, "order_id": 2},
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],
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"orders": [
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{"id": 1, "user_id": 1},
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{"id": 2, "user_id": 2},
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],
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}
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self.assertEqual(
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execute(
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"""
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SELECT
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o.user_id,
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SUM(s.price) AS price
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FROM orders o
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JOIN order_items i
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ON o.id = i.order_id
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JOIN sushi s
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ON i.sushi_id = s.id
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GROUP BY o.user_id
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""",
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tables=tables,
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).rows,
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[
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(1, 4.0),
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(2, 3.0),
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],
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)
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self.assertEqual(
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execute(
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"""
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SELECT
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o.id, x.*
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FROM orders o
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LEFT JOIN (
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SELECT
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1 AS id, 'b' AS x
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UNION ALL
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SELECT
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3 AS id, 'c' AS x
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) x
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ON o.id = x.id
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""",
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tables=tables,
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).rows,
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[(1, 1, "b"), (2, None, None)],
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)
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self.assertEqual(
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execute(
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"""
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SELECT
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o.id, x.*
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FROM orders o
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RIGHT JOIN (
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SELECT
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1 AS id,
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'b' AS x
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UNION ALL
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SELECT
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3 AS id, 'c' AS x
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) x
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ON o.id = x.id
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""",
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tables=tables,
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).rows,
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[
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(1, 1, "b"),
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(None, 3, "c"),
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],
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)
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def test_execute_subqueries(self):
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tables = {
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"table": [
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{"a": 1, "b": 1},
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{"a": 2, "b": 2},
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],
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}
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self.assertEqual(
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execute(
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"""
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SELECT *
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FROM table
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WHERE a = (SELECT MAX(a) FROM table)
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""",
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tables=tables,
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).rows,
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[
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(2, 2),
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],
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)
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def test_table_depth_mismatch(self):
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tables = {"table": []}
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schema = {"db": {"table": {"col": "VARCHAR"}}}
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with self.assertRaises(ExecuteError):
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execute("SELECT * FROM table", schema=schema, tables=tables)
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def test_tables(self):
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tables = ensure_tables(
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{
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"catalog1": {
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"db1": {
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"t1": [
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{"a": 1},
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],
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"t2": [
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{"a": 1},
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],
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},
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"db2": {
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"t3": [
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{"a": 1},
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],
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"t4": [
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{"a": 1},
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],
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},
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},
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"catalog2": {
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"db3": {
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"t5": Table(columns=("a",), rows=[(1,)]),
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"t6": Table(columns=("a",), rows=[(1,)]),
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},
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"db4": {
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"t7": Table(columns=("a",), rows=[(1,)]),
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"t8": Table(columns=("a",), rows=[(1,)]),
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},
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},
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}
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)
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t1 = tables.find(exp.table_(table="t1", db="db1", catalog="catalog1"))
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self.assertEqual(t1.columns, ("a",))
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self.assertEqual(t1.rows, [(1,)])
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t8 = tables.find(exp.table_(table="t8"))
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self.assertEqual(t1.columns, t8.columns)
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self.assertEqual(t1.rows, t8.rows)
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def test_static_queries(self):
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for sql, cols, rows in [
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("SELECT 1", ["_col_0"], [(1,)]),
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("SELECT 1 + 2 AS x", ["x"], [(3,)]),
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("SELECT CONCAT('a', 'b') AS x", ["x"], [("ab",)]),
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("SELECT 1 AS x, 2 AS y", ["x", "y"], [(1, 2)]),
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("SELECT 'foo' LIMIT 1", ["_col_0"], [("foo",)]),
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(
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"SELECT SUM(x), COUNT(x) FROM (SELECT 1 AS x WHERE FALSE)",
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["_col_0", "_col_1"],
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[(None, 0)],
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),
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]:
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with self.subTest(sql):
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result = execute(sql)
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self.assertEqual(result.columns, tuple(cols))
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self.assertEqual(result.rows, rows)
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def test_aggregate_without_group_by(self):
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result = execute("SELECT SUM(x) FROM t", tables={"t": [{"x": 1}, {"x": 2}]})
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self.assertEqual(result.columns, ("_col_0",))
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self.assertEqual(result.rows, [(3,)])
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def test_scalar_functions(self):
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for sql, expected in [
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("CONCAT('a', 'b')", "ab"),
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("CONCAT('a', NULL)", None),
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("CONCAT_WS('_', 'a', 'b')", "a_b"),
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("STR_POSITION('bar', 'foobarbar')", 4),
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("STR_POSITION('bar', 'foobarbar', 5)", 7),
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("STR_POSITION(NULL, 'foobarbar')", None),
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("STR_POSITION('bar', NULL)", None),
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("UPPER('foo')", "FOO"),
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("UPPER(NULL)", None),
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("LOWER('FOO')", "foo"),
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("LOWER(NULL)", None),
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("IFNULL('a', 'b')", "a"),
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("IFNULL(NULL, 'b')", "b"),
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("IFNULL(NULL, NULL)", None),
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("SUBSTRING('12345')", "12345"),
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("SUBSTRING('12345', 3)", "345"),
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("SUBSTRING('12345', 3, 0)", ""),
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("SUBSTRING('12345', 3, 1)", "3"),
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("SUBSTRING('12345', 3, 2)", "34"),
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("SUBSTRING('12345', 3, 3)", "345"),
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("SUBSTRING('12345', 3, 4)", "345"),
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("SUBSTRING('12345', -3)", "345"),
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("SUBSTRING('12345', -3, 0)", ""),
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("SUBSTRING('12345', -3, 1)", "3"),
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("SUBSTRING('12345', -3, 2)", "34"),
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("SUBSTRING('12345', 0)", ""),
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("SUBSTRING('12345', 0, 1)", ""),
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("SUBSTRING(NULL)", None),
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("SUBSTRING(NULL, 1)", None),
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("CAST(1 AS TEXT)", "1"),
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("CAST('1' AS LONG)", 1),
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("CAST('1.1' AS FLOAT)", 1.1),
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("COALESCE(NULL)", None),
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("COALESCE(NULL, NULL)", None),
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("COALESCE(NULL, 'b')", "b"),
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("COALESCE('a', 'b')", "a"),
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("1 << 1", 2),
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("1 >> 1", 0),
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("1 & 1", 1),
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("1 | 1", 1),
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("1 < 1", False),
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("1 <= 1", True),
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("1 > 1", False),
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("1 >= 1", True),
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("1 + NULL", None),
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("IF(true, 1, 0)", 1),
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("IF(false, 1, 0)", 0),
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("CASE WHEN 0 = 1 THEN 'foo' ELSE 'bar' END", "bar"),
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("CAST('2022-01-01' AS DATE) + INTERVAL '1' DAY", date(2022, 1, 2)),
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("1 IN (1, 2, 3)", True),
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("1 IN (2, 3)", False),
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("NULL IS NULL", True),
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("NULL IS NOT NULL", False),
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("NULL = NULL", None),
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("NULL <> NULL", None),
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]:
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with self.subTest(sql):
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result = execute(f"SELECT {sql}")
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self.assertEqual(result.rows, [(expected,)])
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def test_case_sensitivity(self):
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result = execute("SELECT A AS A FROM X", tables={"x": [{"a": 1}]})
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self.assertEqual(result.columns, ("A",))
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self.assertEqual(result.rows, [(1,)])
|