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-rw-r--r--tests/dialects/test_duckdb.py249
1 files changed, 249 insertions, 0 deletions
diff --git a/tests/dialects/test_duckdb.py b/tests/dialects/test_duckdb.py
new file mode 100644
index 0000000..501301f
--- /dev/null
+++ b/tests/dialects/test_duckdb.py
@@ -0,0 +1,249 @@
+from tests.dialects.test_dialect import Validator
+
+
+class TestDuckDB(Validator):
+ dialect = "duckdb"
+
+ def test_time(self):
+ self.validate_all(
+ "EPOCH(x)",
+ read={
+ "presto": "TO_UNIXTIME(x)",
+ },
+ write={
+ "bigquery": "TIME_TO_UNIX(x)",
+ "duckdb": "EPOCH(x)",
+ "presto": "TO_UNIXTIME(x)",
+ "spark": "UNIX_TIMESTAMP(x)",
+ },
+ )
+ self.validate_all(
+ "EPOCH_MS(x)",
+ write={
+ "bigquery": "UNIX_TO_TIME(x / 1000)",
+ "duckdb": "TO_TIMESTAMP(CAST(x / 1000 AS BIGINT))",
+ "presto": "FROM_UNIXTIME(x / 1000)",
+ "spark": "FROM_UNIXTIME(x / 1000)",
+ },
+ )
+ self.validate_all(
+ "STRFTIME(x, '%y-%-m-%S')",
+ write={
+ "bigquery": "TIME_TO_STR(x, '%y-%-m-%S')",
+ "duckdb": "STRFTIME(x, '%y-%-m-%S')",
+ "postgres": "TO_CHAR(x, 'YY-FMMM-SS')",
+ "presto": "DATE_FORMAT(x, '%y-%c-%S')",
+ "spark": "DATE_FORMAT(x, 'yy-M-ss')",
+ },
+ )
+ self.validate_all(
+ "STRFTIME(x, '%Y-%m-%d %H:%M:%S')",
+ write={
+ "duckdb": "STRFTIME(x, '%Y-%m-%d %H:%M:%S')",
+ "presto": "DATE_FORMAT(x, '%Y-%m-%d %H:%i:%S')",
+ "hive": "DATE_FORMAT(x, 'yyyy-MM-dd HH:mm:ss')",
+ },
+ )
+ self.validate_all(
+ "STRPTIME(x, '%y-%-m')",
+ write={
+ "bigquery": "STR_TO_TIME(x, '%y-%-m')",
+ "duckdb": "STRPTIME(x, '%y-%-m')",
+ "presto": "DATE_PARSE(x, '%y-%c')",
+ "hive": "CAST(FROM_UNIXTIME(UNIX_TIMESTAMP(x, 'yy-M')) AS TIMESTAMP)",
+ "spark": "TO_TIMESTAMP(x, 'yy-M')",
+ },
+ )
+ self.validate_all(
+ "TO_TIMESTAMP(x)",
+ write={
+ "duckdb": "CAST(x AS TIMESTAMP)",
+ "presto": "DATE_PARSE(x, '%Y-%m-%d %H:%i:%s')",
+ "hive": "CAST(x AS TIMESTAMP)",
+ },
+ )
+
+ def test_duckdb(self):
+ self.validate_all(
+ "LIST_VALUE(0, 1, 2)",
+ write={
+ "bigquery": "[0, 1, 2]",
+ "duckdb": "LIST_VALUE(0, 1, 2)",
+ "presto": "ARRAY[0, 1, 2]",
+ "spark": "ARRAY(0, 1, 2)",
+ },
+ )
+ self.validate_all(
+ "REGEXP_MATCHES(x, y)",
+ write={
+ "duckdb": "REGEXP_MATCHES(x, y)",
+ "presto": "REGEXP_LIKE(x, y)",
+ "hive": "x RLIKE y",
+ "spark": "x RLIKE y",
+ },
+ )
+ self.validate_all(
+ "STR_SPLIT(x, 'a')",
+ write={
+ "duckdb": "STR_SPLIT(x, 'a')",
+ "presto": "SPLIT(x, 'a')",
+ "hive": "SPLIT(x, CONCAT('\\\\Q', 'a'))",
+ "spark": "SPLIT(x, CONCAT('\\\\Q', 'a'))",
+ },
+ )
+ self.validate_all(
+ "STRING_TO_ARRAY(x, 'a')",
+ write={
+ "duckdb": "STR_SPLIT(x, 'a')",
+ "presto": "SPLIT(x, 'a')",
+ "hive": "SPLIT(x, CONCAT('\\\\Q', 'a'))",
+ "spark": "SPLIT(x, CONCAT('\\\\Q', 'a'))",
+ },
+ )
+ self.validate_all(
+ "STR_SPLIT_REGEX(x, 'a')",
+ write={
+ "duckdb": "STR_SPLIT_REGEX(x, 'a')",
+ "presto": "REGEXP_SPLIT(x, 'a')",
+ "hive": "SPLIT(x, 'a')",
+ "spark": "SPLIT(x, 'a')",
+ },
+ )
+ self.validate_all(
+ "STRUCT_EXTRACT(x, 'abc')",
+ write={
+ "duckdb": "STRUCT_EXTRACT(x, 'abc')",
+ "presto": 'x."abc"',
+ "hive": "x.`abc`",
+ "spark": "x.`abc`",
+ },
+ )
+ self.validate_all(
+ "STRUCT_EXTRACT(STRUCT_EXTRACT(x, 'y'), 'abc')",
+ write={
+ "duckdb": "STRUCT_EXTRACT(STRUCT_EXTRACT(x, 'y'), 'abc')",
+ "presto": 'x."y"."abc"',
+ "hive": "x.`y`.`abc`",
+ "spark": "x.`y`.`abc`",
+ },
+ )
+
+ self.validate_all(
+ "QUANTILE(x, 0.5)",
+ write={
+ "duckdb": "QUANTILE(x, 0.5)",
+ "presto": "APPROX_PERCENTILE(x, 0.5)",
+ "hive": "PERCENTILE(x, 0.5)",
+ "spark": "PERCENTILE(x, 0.5)",
+ },
+ )
+
+ self.validate_all(
+ "CAST(x AS DATE)",
+ write={
+ "duckdb": "CAST(x AS DATE)",
+ "": "CAST(x AS DATE)",
+ },
+ )
+ self.validate_all(
+ "UNNEST(x)",
+ read={
+ "spark": "EXPLODE(x)",
+ },
+ write={
+ "duckdb": "UNNEST(x)",
+ "spark": "EXPLODE(x)",
+ },
+ )
+
+ self.validate_all(
+ "1d",
+ write={
+ "duckdb": "1 AS d",
+ "spark": "1 AS d",
+ },
+ )
+ self.validate_all(
+ "CAST(1 AS DOUBLE)",
+ read={
+ "hive": "1d",
+ "spark": "1d",
+ },
+ )
+ self.validate_all(
+ "POWER(CAST(2 AS SMALLINT), 3)",
+ read={
+ "hive": "POW(2S, 3)",
+ "spark": "POW(2S, 3)",
+ },
+ )
+ self.validate_all(
+ "LIST_SUM(LIST_VALUE(1, 2))",
+ read={
+ "spark": "ARRAY_SUM(ARRAY(1, 2))",
+ },
+ )
+ self.validate_all(
+ "IF(y <> 0, x / y, NULL)",
+ read={
+ "bigquery": "SAFE_DIVIDE(x, y)",
+ },
+ )
+ self.validate_all(
+ "STRUCT_PACK(x := 1, y := '2')",
+ write={
+ "duckdb": "STRUCT_PACK(x := 1, y := '2')",
+ "spark": "STRUCT(x = 1, y = '2')",
+ },
+ )
+ self.validate_all(
+ "ARRAY_SORT(x)",
+ write={
+ "duckdb": "ARRAY_SORT(x)",
+ "presto": "ARRAY_SORT(x)",
+ "hive": "SORT_ARRAY(x)",
+ "spark": "SORT_ARRAY(x)",
+ },
+ )
+ self.validate_all(
+ "ARRAY_REVERSE_SORT(x)",
+ write={
+ "duckdb": "ARRAY_REVERSE_SORT(x)",
+ "presto": "ARRAY_SORT(x, (a, b) -> CASE WHEN a < b THEN 1 WHEN a > b THEN -1 ELSE 0 END)",
+ "hive": "SORT_ARRAY(x, FALSE)",
+ "spark": "SORT_ARRAY(x, FALSE)",
+ },
+ )
+ self.validate_all(
+ "LIST_REVERSE_SORT(x)",
+ write={
+ "duckdb": "ARRAY_REVERSE_SORT(x)",
+ "presto": "ARRAY_SORT(x, (a, b) -> CASE WHEN a < b THEN 1 WHEN a > b THEN -1 ELSE 0 END)",
+ "hive": "SORT_ARRAY(x, FALSE)",
+ "spark": "SORT_ARRAY(x, FALSE)",
+ },
+ )
+ self.validate_all(
+ "LIST_SORT(x)",
+ write={
+ "duckdb": "ARRAY_SORT(x)",
+ "presto": "ARRAY_SORT(x)",
+ "hive": "SORT_ARRAY(x)",
+ "spark": "SORT_ARRAY(x)",
+ },
+ )
+ self.validate_all(
+ "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname",
+ write={
+ "duckdb": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname NULLS LAST, lname",
+ },
+ )
+ self.validate_all(
+ "MONTH('2021-03-01')",
+ write={
+ "duckdb": "MONTH('2021-03-01')",
+ "presto": "MONTH('2021-03-01')",
+ "hive": "MONTH('2021-03-01')",
+ "spark": "MONTH('2021-03-01')",
+ },
+ )
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 12:36:21 +0000