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Merging upstream version 17.11.0.

Browse source 
Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-13 20:51:40 +01:00
parent 2bd548fc43
commit 14ca349bca
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
69 changed files with 30974 additions and 30030 deletions
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21
tests/dialects/test_bigquery.py
View file

@ -200,8 +200,15 @@ class TestBigQuery(Validator):
)
self.validate_all(
"REGEXP_CONTAINS('foo', '.*')",
read={"bigquery": "REGEXP_CONTAINS('foo', '.*')"},
write={"mysql": "REGEXP_LIKE('foo', '.*')"},
read={
"bigquery": "REGEXP_CONTAINS('foo', '.*')",
"mysql": "REGEXP_LIKE('foo', '.*')",
"starrocks": "REGEXP('foo', '.*')",
},
write={
"mysql": "REGEXP_LIKE('foo', '.*')",
"starrocks": "REGEXP('foo', '.*')",
},
),
self.validate_all(
'"""x"""',
@ -481,13 +488,21 @@ class TestBigQuery(Validator):
write={
"bigquery": "DATE_DIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE), DAY)",
"mysql": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
"starrocks": "DATE_DIFF('DAY', CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
},
)
self.validate_all(
"DATE_DIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE), DAY)",
read={
"mysql": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
"starrocks": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
},
)
self.validate_all(
"DATE_DIFF(DATE '2010-07-07', DATE '2008-12-25', MINUTE)",
write={
"bigquery": "DATE_DIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE), MINUTE)",
"mysql": "DATEDIFF(CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
"starrocks": "DATE_DIFF('MINUTE', CAST('2010-07-07' AS DATE), CAST('2008-12-25' AS DATE))",
},
)
self.validate_all(

32
tests/dialects/test_duckdb.py
View file

@ -583,6 +583,38 @@ class TestDuckDB(Validator):
write={"duckdb": "SELECT a, BOOL_OR(b) FROM table GROUP BY a"},
)
def test_encode_decode(self):
self.validate_all(
"ENCODE(x)",
read={
"spark": "ENCODE(x, 'utf-8')",
"presto": "TO_UTF8(x)",
},
write={
"duckdb": "ENCODE(x)",
"spark": "ENCODE(x, 'utf-8')",
"presto": "TO_UTF8(x)",
},
)
self.validate_all(
"DECODE(x)",
read={
"spark": "DECODE(x, 'utf-8')",
"presto": "FROM_UTF8(x)",
},
write={
"duckdb": "DECODE(x)",
"spark": "DECODE(x, 'utf-8')",
"presto": "FROM_UTF8(x)",
},
)
self.validate_all(
"DECODE(x)",
read={
"presto": "FROM_UTF8(x, y)",
},
)
def test_rename_table(self):
self.validate_all(
"ALTER TABLE db.t1 RENAME TO db.t2",

1
tests/dialects/test_hive.py
View file

@ -390,6 +390,7 @@ class TestHive(Validator):
)
def test_hive(self):
self.validate_identity("SELECT transform")
self.validate_identity("SELECT * FROM test DISTRIBUTE BY y SORT BY x DESC ORDER BY l")
self.validate_identity(
"SELECT * FROM test WHERE RAND() <= 0.1 DISTRIBUTE BY RAND() SORT BY RAND()"

31
tests/dialects/test_presto.py
View file

@ -466,6 +466,7 @@ class TestPresto(Validator):
read={"spark": "STARTSWITH('abc', 'a')"},
write={
"presto": "STARTS_WITH('abc', 'a')",
"snowflake": "STARTSWITH('abc', 'a')",
"spark": "STARTSWITH('abc', 'a')",
},
)
@ -740,46 +741,44 @@ class TestPresto(Validator):
)
def test_encode_decode(self):
self.validate_identity("FROM_UTF8(x, y)")
self.validate_all(
"TO_UTF8(x)",
read={
"duckdb": "ENCODE(x)",
"spark": "ENCODE(x, 'utf-8')",
},
write={
"duckdb": "ENCODE(x)",
"presto": "TO_UTF8(x)",
"spark": "ENCODE(x, 'utf-8')",
},
)
self.validate_all(
"FROM_UTF8(x)",
write={
read={
"duckdb": "DECODE(x)",
"spark": "DECODE(x, 'utf-8')",
},
)
self.validate_all(
"FROM_UTF8(x, y)",
write={
"presto": "FROM_UTF8(x, y)",
},
)
self.validate_all(
"ENCODE(x, 'utf-8')",
write={
"presto": "TO_UTF8(x)",
},
)
self.validate_all(
"DECODE(x, 'utf-8')",
write={
"duckdb": "DECODE(x)",
"presto": "FROM_UTF8(x)",
"spark": "DECODE(x, 'utf-8')",
},
)
self.validate_all(
"ENCODE(x, 'invalid')",
write={
"presto": UnsupportedError,
"duckdb": UnsupportedError,
},
)
self.validate_all(
"DECODE(x, 'invalid')",
write={
"presto": UnsupportedError,
"duckdb": UnsupportedError,
},
)

43
tests/dialects/test_redshift.py
View file

@ -5,15 +5,16 @@ class TestRedshift(Validator):
dialect = "redshift"
def test_redshift(self):
self.validate_identity("SELECT * FROM #x")
self.validate_identity("SELECT INTERVAL '5 day'")
self.validate_identity("foo$")
self.validate_identity("$foo")
self.validate_all(
"SELECT INTERVAL '5 days'",
read={
"": "SELECT INTERVAL '5' days",
},
)
self.validate_all(
"SELECT ADD_MONTHS('2008-03-31', 1)",
write={
"redshift": "SELECT DATEADD(month, 1, '2008-03-31')",
"redshift": "SELECT DATEADD(month, 1, CAST('2008-03-31' AS DATE))",
"trino": "SELECT DATE_ADD('month', 1, CAST(CAST('2008-03-31' AS TIMESTAMP) AS DATE))",
},
)
@ -88,11 +89,6 @@ class TestRedshift(Validator):
"snowflake": "SELECT DATE_PART(month, CAST('20220502' AS DATE))",
},
)
self.validate_all("SELECT INTERVAL '5 days'", read={"": "SELECT INTERVAL '5' days"})
self.validate_all("CONVERT(INT, x)", write={"redshift": "CAST(x AS INTEGER)"})
self.validate_all(
"DATEADD('day', ndays, caldate)", write={"redshift": "DATEADD(day, ndays, caldate)"}
)
self.validate_all(
'create table "group" ("col" char(10))',
write={
@ -186,7 +182,7 @@ class TestRedshift(Validator):
self.validate_all(
"DATEDIFF('day', a, b)",
write={
"redshift": "DATEDIFF(day, a, b)",
"redshift": "DATEDIFF(day, CAST(a AS DATE), CAST(b AS DATE))",
"presto": "DATE_DIFF('day', CAST(CAST(a AS TIMESTAMP) AS DATE), CAST(CAST(b AS TIMESTAMP) AS DATE))",
},
)
@ -198,15 +194,18 @@ class TestRedshift(Validator):
)
def test_identity(self):
self.validate_identity("SELECT * FROM #x")
self.validate_identity("SELECT INTERVAL '5 day'")
self.validate_identity("foo$")
self.validate_identity("$foo")
self.validate_identity("CAST('bla' AS SUPER)")
self.validate_identity("CREATE TABLE real1 (realcol REAL)")
self.validate_identity("CAST('foo' AS HLLSKETCH)")
self.validate_identity("SELECT DATEADD(day, 1, 'today')")
self.validate_identity("'abc' SIMILAR TO '(b|c)%'")
self.validate_identity("CREATE TABLE datetable (start_date DATE, end_date DATE)")
self.validate_identity(
"SELECT caldate + INTERVAL '1 second' AS dateplus FROM date WHERE caldate = '12-31-2008'"
)
self.validate_identity("CREATE TABLE datetable (start_date DATE, end_date DATE)")
self.validate_identity(
"SELECT COUNT(*) FROM event WHERE eventname LIKE '%Ring%' OR eventname LIKE '%Die%'"
)
@ -225,6 +224,22 @@ class TestRedshift(Validator):
self.validate_identity(
"CREATE TABLE SOUP (SOUP1 VARCHAR(50) NOT NULL ENCODE ZSTD, SOUP2 VARCHAR(70) NULL ENCODE DELTA)"
)
self.validate_identity(
"SELECT DATEADD(day, 1, 'today')",
"SELECT DATEADD(day, 1, CAST('today' AS DATE))",
)
self.validate_identity(
"SELECT DATEADD('day', ndays, caldate)",
"SELECT DATEADD(day, ndays, CAST(caldate AS DATE))",
)
self.validate_identity(
"CONVERT(INT, x)",
"CAST(x AS INTEGER)",
)
self.validate_identity(
"SELECT DATE_ADD('day', 1, DATE('2023-01-01'))",
"SELECT DATEADD(day, 1, CAST(DATE('2023-01-01') AS DATE))",
)
def test_values(self):
self.validate_all(

17
tests/dialects/test_snowflake.py
View file

@ -8,6 +8,7 @@ class TestSnowflake(Validator):
dialect = "snowflake"
def test_snowflake(self):
self.validate_identity("WEEKOFYEAR(tstamp)")
self.validate_identity("SELECT SUM(amount) FROM mytable GROUP BY ALL")
self.validate_identity("WITH x AS (SELECT 1 AS foo) SELECT foo FROM IDENTIFIER('x')")
self.validate_identity("WITH x AS (SELECT 1 AS foo) SELECT IDENTIFIER('foo') FROM x")
@ -33,12 +34,21 @@ class TestSnowflake(Validator):
self.validate_identity("ALTER TABLE foo UNSET DATA_RETENTION_TIME_IN_DAYS, CHANGE_TRACKING")
self.validate_identity("COMMENT IF EXISTS ON TABLE foo IS 'bar'")
self.validate_identity("SELECT CONVERT_TIMEZONE('UTC', 'America/Los_Angeles', col)")
self.validate_identity("REGEXP_REPLACE('target', 'pattern', '\n')")
self.validate_identity(
'COPY INTO NEW_TABLE ("foo", "bar") FROM (SELECT $1, $2, $3, $4 FROM @%old_table)'
)
self.validate_identity(
"SELECT state, city, SUM(retail_price * quantity) AS gross_revenue FROM sales GROUP BY ALL"
)
self.validate_identity(
r"SELECT RLIKE(a, $$regular expression with \ characters: \d{2}-\d{3}-\d{4}$$, 'i') FROM log_source",
r"SELECT REGEXP_LIKE(a, 'regular expression with \\ characters: \\d{2}-\\d{3}-\\d{4}', 'i') FROM log_source",
)
self.validate_identity(
r"SELECT $$a ' \ \t \x21 z $ $$",
r"SELECT 'a \' \\ \\t \\x21 z $ '",
)
self.validate_all("CAST(x AS BYTEINT)", write={"snowflake": "CAST(x AS INT)"})
self.validate_all("CAST(x AS CHAR VARYING)", write={"snowflake": "CAST(x AS VARCHAR)"})
@ -384,13 +394,6 @@ class TestSnowflake(Validator):
"snowflake": "SELECT 'a'",
},
)
self.validate_all(
r"SELECT $$a ' \ \t \x21 z $ $$",
write={
"snowflake": r"SELECT 'a \' \ \t \x21 z $ '",
},
)
self.validate_identity("REGEXP_REPLACE('target', 'pattern', '\n')")
self.validate_all(
"SELECT RLIKE(a, b)",
write={

16
tests/dialects/test_starrocks.py
View file

@ -1,7 +1,7 @@
from tests.dialects.test_dialect import Validator
class TestMySQL(Validator):
class TestStarrocks(Validator):
dialect = "starrocks"
def test_identity(self):
@ -10,11 +10,21 @@ class TestMySQL(Validator):
def test_time(self):
self.validate_identity("TIMESTAMP('2022-01-01')")
self.validate_identity(
"SELECT DATE_DIFF('second', '2010-11-30 23:59:59', '2010-11-30 20:58:59')"
)
self.validate_identity(
"SELECT DATE_DIFF('minute', '2010-11-30 23:59:59', '2010-11-30 20:58:59')"
)
def test_regex(self):
self.validate_all(
"SELECT REGEXP_LIKE(abc, '%foo%')",
write={
"SELECT REGEXP(abc, '%foo%')",
read={
"mysql": "SELECT REGEXP_LIKE(abc, '%foo%')",
"starrocks": "SELECT REGEXP(abc, '%foo%')",
},
write={
"mysql": "SELECT REGEXP_LIKE(abc, '%foo%')",
},
)

8
tests/dialects/test_tsql.py
View file

@ -6,6 +6,10 @@ class TestTSQL(Validator):
dialect = "tsql"
def test_tsql(self):
projection = parse_one("SELECT a = 1", read="tsql").selects[0]
projection.assert_is(exp.Alias)
projection.args["alias"].assert_is(exp.Identifier)
self.validate_identity("UPDATE x SET y = 1 OUTPUT x.a, x.b INTO @y FROM y")
self.validate_identity("UPDATE x SET y = 1 OUTPUT x.a, x.b FROM y")
self.validate_identity("INSERT INTO x (y) OUTPUT x.a, x.b INTO l SELECT * FROM z")
@ -25,6 +29,10 @@ class TestTSQL(Validator):
self.validate_identity('SELECT "x"."y" FROM foo')
self.validate_identity("SELECT * FROM #foo")
self.validate_identity("SELECT * FROM ##foo")
self.validate_identity("SELECT a = 1", "SELECT 1 AS a")
self.validate_identity(
"SELECT a = 1 UNION ALL SELECT a = b", "SELECT 1 AS a UNION ALL SELECT b AS a"
)
self.validate_identity(
"SELECT x FROM @MyTableVar AS m JOIN Employee ON m.EmployeeID = Employee.EmployeeID"
)

2
tests/fixtures/identity.sql vendored
View file

@ -87,6 +87,7 @@ x IN ('a', 'a''a')
x IN ((1))
x BETWEEN -1 AND 1
x BETWEEN 'a' || b AND 'c' || d
((a, b) AS c)
NOT x IS NULL
x IS TRUE
x IS FALSE
@ -852,3 +853,4 @@ SELECT * FROM (tbl1 CROSS JOIN (SELECT * FROM tbl2) AS t1)
/* comment1 */ INSERT INTO x /* comment2 */ VALUES (1, 2, 3)
/* comment1 */ UPDATE tbl /* comment2 */ SET x = 2 WHERE x < 2
/* comment1 */ DELETE FROM x /* comment2 */ WHERE y > 1
SELECT next, transform, if

37
tests/fixtures/optimizer/optimizer.sql vendored
View file

@ -907,3 +907,40 @@ JOIN "x" AS "x"
ON "y"."b" = "x"."b"
GROUP BY
"x"."a";
# title: select * from a cte, which had one of its two columns aliased
WITH cte(x, y) AS (SELECT 1, 2) SELECT * FROM cte AS cte(a);
WITH "cte" AS (
SELECT
1 AS "x",
2 AS "y"
)
SELECT
"cte"."a" AS "a",
"cte"."y" AS "y"
FROM "cte" AS "cte"("a");
# title: select single column from a cte using its alias
WITH cte(x) AS (SELECT 1) SELECT a FROM cte AS cte(a);
WITH "cte" AS (
SELECT
1 AS "x"
)
SELECT
"cte"."a" AS "a"
FROM "cte" AS "cte"("a");
# title: joined ctes with a "using" clause, one of which has had its column aliased
WITH m(a) AS (SELECT 1), n(b) AS (SELECT 1) SELECT * FROM m JOIN n AS foo(a) USING (a);
WITH "m" AS (
SELECT
1 AS "a"
), "n" AS (
SELECT
1 AS "b"
)
SELECT
COALESCE("m"."a", "foo"."a") AS "a"
FROM "m"
JOIN "n" AS "foo"("a")
ON "m"."a" = "foo"."a";

9
tests/fixtures/optimizer/pushdown_projections.sql vendored
View file

@ -61,6 +61,15 @@ SELECT i.a AS a FROM x AS i LEFT JOIN (SELECT _q_0.a AS a FROM (SELECT x.a AS a
WITH cte AS (SELECT source.a AS a, ROW_NUMBER() OVER (PARTITION BY source.id, source.timestamp ORDER BY source.a DESC) AS index FROM source AS source QUALIFY index) SELECT cte.a AS a FROM cte;
WITH cte AS (SELECT source.a AS a FROM source AS source QUALIFY ROW_NUMBER() OVER (PARTITION BY source.id, source.timestamp ORDER BY source.a DESC)) SELECT cte.a AS a FROM cte;
WITH cte AS (SELECT 1 AS x, 2 AS y, 3 AS z) SELECT cte.a FROM cte AS cte(a);
WITH cte AS (SELECT 1 AS x) SELECT cte.a AS a FROM cte AS cte(a);
WITH cte(x, y, z) AS (SELECT 1, 2, 3) SELECT a, z FROM cte AS cte(a);
WITH cte AS (SELECT 1 AS x, 3 AS z) SELECT cte.a AS a, cte.z AS z FROM cte AS cte(a);
WITH cte(x, y, z) AS (SELECT 1, 2, 3) SELECT a, z FROM (SELECT * FROM cte AS cte(b)) AS cte(a);
WITH cte AS (SELECT 1 AS x, 3 AS z) SELECT cte.a AS a, cte.z AS z FROM (SELECT cte.b AS a, cte.z AS z FROM cte AS cte(b)) AS cte;
--------------------------------------
-- Unknown Star Expansion
--------------------------------------

23
tests/fixtures/optimizer/qualify_columns.sql vendored
View file

@ -125,7 +125,7 @@ SELECT COALESCE(x.a) AS d FROM x JOIN y ON x.b = y.b GROUP BY d;
SELECT COALESCE(x.a) AS d FROM x AS x JOIN y AS y ON x.b = y.b GROUP BY COALESCE(x.a);
SELECT a + 1 AS d FROM x WHERE d > 1;
SELECT x.a + 1 AS d FROM x AS x WHERE x.a + 1 > 1;
SELECT x.a + 1 AS d FROM x AS x WHERE (x.a + 1) > 1;
# execute: false
SELECT a + 1 AS d, d + 2 FROM x;
@ -300,6 +300,12 @@ WITH z AS (SELECT x.a AS a, x.b AS b FROM x AS x), q AS (SELECT z.b AS b FROM z)
WITH z AS ((SELECT b FROM x UNION ALL SELECT b FROM y) ORDER BY b) SELECT * FROM z;
WITH z AS ((SELECT x.b AS b FROM x AS x UNION ALL SELECT y.b AS b FROM y AS y) ORDER BY b) SELECT z.b AS b FROM z;
WITH cte(x) AS (SELECT 1) SELECT * FROM cte AS cte(a);
WITH cte AS (SELECT 1 AS x) SELECT cte.a AS a FROM cte AS cte(a);
WITH cte(x, y) AS (SELECT 1, 2) SELECT cte.* FROM cte AS cte(a);
WITH cte AS (SELECT 1 AS x, 2 AS y) SELECT cte.a AS a, cte.y AS y FROM cte AS cte(a);
--------------------------------------
-- Except and Replace
--------------------------------------
@ -383,6 +389,9 @@ SELECT x.b AS b FROM t AS t JOIN x AS x ON t.a = x.a;
SELECT a FROM t1 JOIN t2 USING(a);
SELECT COALESCE(t1.a, t2.a) AS a FROM t1 AS t1 JOIN t2 AS t2 ON t1.a = t2.a;
WITH m(a) AS (SELECT 1), n(b) AS (SELECT 1) SELECT * FROM m JOIN n AS foo(a) USING (a);
WITH m AS (SELECT 1 AS a), n AS (SELECT 1 AS b) SELECT COALESCE(m.a, foo.a) AS a FROM m JOIN n AS foo(a) ON m.a = foo.a;
--------------------------------------
-- Hint with table reference
--------------------------------------
@ -444,7 +453,7 @@ SELECT x.a AS a, x.b AS b FROM x AS x QUALIFY COUNT(x.a) OVER (PARTITION BY x.b)
-- Expand laterals
--------------------------------------
# execute: false
select 2 AS d, d + 1 FROM x WHERE d = 2 GROUP BY d;
SELECT 2 AS d, d + 1 FROM x WHERE d = 2 GROUP BY d;
SELECT 2 AS d, 2 + 1 AS _col_1 FROM x AS x WHERE 2 = 2 GROUP BY 1;
# title: expand alias reference
@ -471,6 +480,16 @@ FROM (
);
SELECT _q_0.i AS i, _q_0.j AS j FROM (SELECT x.a + 1 AS i, x.a + 1 + 1 AS j FROM x AS x) AS _q_0;
# title: wrap expanded alias to ensure operator precedence isn't broken
# execute: false
SELECT x.a + x.b AS f, f * x.b FROM x;
SELECT x.a + x.b AS f, (x.a + x.b) * x.b AS _col_1 FROM x AS x;
# title: no need to wrap expanded alias
# execute: false
SELECT x.a + x.b AS f, f, f + 5 FROM x;
SELECT x.a + x.b AS f, x.a + x.b AS _col_1, x.a + x.b + 5 AS _col_2 FROM x AS x;
--------------------------------------
-- Wrapped tables / join constructs
--------------------------------------

1
tests/fixtures/optimizer/qualify_columns__invalid.sql vendored
View file

@ -11,3 +11,4 @@ SELECT x.a FROM x JOIN y USING (a);
SELECT a, SUM(b) FROM x GROUP BY 3;
SELECT p FROM (SELECT x from xx) y CROSS JOIN yy CROSS JOIN zz
SELECT a FROM (SELECT * FROM x CROSS JOIN y);
SELECT x FROM tbl AS tbl(a);

4
tests/test_expressions.py
View file

@ -328,6 +328,10 @@ class TestExpressions(unittest.TestCase):
cte = expression.find(exp.CTE)
self.assertEqual(cte.alias_column_names, ["a", "b"])
expression = parse_one("SELECT * FROM tbl AS tbl(a, b)")
table = expression.find(exp.Table)
self.assertEqual(table.alias_column_names, ["a", "b"])
def test_ctes(self):
expression = parse_one("SELECT a FROM x")
self.assertEqual(expression.ctes, [])

2
tests/test_optimizer.py
View file

@ -291,7 +291,7 @@ class TestOptimizer(unittest.TestCase):
# check order of lateral expansion with no schema
self.assertEqual(
optimizer.optimize("SELECT a + 1 AS d, d + 1 AS e FROM x WHERE e > 1 GROUP BY e").sql(),
'SELECT "x"."a" + 1 AS "d", "x"."a" + 1 + 1 AS "e" FROM "x" AS "x" WHERE "x"."a" + 2 > 1 GROUP BY "x"."a" + 1 + 1',
'SELECT "x"."a" + 1 AS "d", "x"."a" + 1 + 1 AS "e" FROM "x" AS "x" WHERE ("x"."a" + 2) > 1 GROUP BY "x"."a" + 1 + 1',
)
self.assertEqual(

14
tests/test_parser.py
View file

@ -219,6 +219,9 @@ class TestParser(unittest.TestCase):
with self.assertRaises(ParseError):
parse_one("WITH cte AS (SELECT * FROM x)")
with self.assertRaises(ParseError):
parse_one("SELECT foo( FROM bar")
self.assertEqual(
parse_one(
"CREATE TABLE t (i UInt8) ENGINE = AggregatingMergeTree() ORDER BY tuple()",
@ -694,3 +697,14 @@ class TestParser(unittest.TestCase):
def test_parse_floats(self):
self.assertTrue(parse_one("1. ").is_number)
def test_parse_terse_coalesce(self):
self.assertIsNotNone(parse_one("SELECT x ?? y FROM z").find(exp.Coalesce))
self.assertEqual(
parse_one("SELECT a, b ?? 'No Data' FROM z").sql(),
"SELECT a, COALESCE(b, 'No Data') FROM z",
)
self.assertEqual(
parse_one("SELECT a, b ?? c ?? 'No Data' FROM z").sql(),
"SELECT a, COALESCE(COALESCE(b, c), 'No Data') FROM z",
)