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from tests.dialects.test_dialect import Validator
from sqlglot.helper import logger as helper_logger
class TestSQLite(Validator):
dialect = "sqlite"
def test_sqlite(self):
self.validate_identity("SELECT DATE()")
self.validate_identity("SELECT DATE('now', 'start of month', '+1 month', '-1 day')")
self.validate_identity("SELECT DATETIME(1092941466, 'unixepoch')")
self.validate_identity("SELECT DATETIME(1092941466, 'auto')")
self.validate_identity("SELECT DATETIME(1092941466, 'unixepoch', 'localtime')")
self.validate_identity("SELECT UNIXEPOCH()")
self.validate_identity("SELECT JULIANDAY('now') - JULIANDAY('1776-07-04')")
self.validate_identity("SELECT UNIXEPOCH() - UNIXEPOCH('2004-01-01 02:34:56')")
self.validate_identity("SELECT DATE('now', 'start of year', '+9 months', 'weekday 2')")
self.validate_identity("SELECT (JULIANDAY('now') - 2440587.5) * 86400.0")
self.validate_identity("SELECT UNIXEPOCH('now', 'subsec')")
self.validate_identity("SELECT TIMEDIFF('now', '1809-02-12')")
self.validate_identity(
"SELECT JSON_EXTRACT('[10, 20, [30, 40]]', '$[2]', '$[0]', '$[1]')",
)
self.validate_identity(
"""SELECT item AS "item", some AS "some" FROM data WHERE (item = 'value_1' COLLATE NOCASE) AND (some = 't' COLLATE NOCASE) ORDER BY item ASC LIMIT 1 OFFSET 0"""
)
self.validate_identity("SELECT * FROM GENERATE_SERIES(1, 5)")
self.validate_identity("SELECT INSTR(haystack, needle)")
self.validate_all("SELECT LIKE(y, x)", write={"sqlite": "SELECT x LIKE y"})
self.validate_all("SELECT GLOB('*y*', 'xyz')", write={"sqlite": "SELECT 'xyz' GLOB '*y*'"})
self.validate_all(
"SELECT LIKE('%y%', 'xyz', '')", write={"sqlite": "SELECT 'xyz' LIKE '%y%' ESCAPE ''"}
)
self.validate_all(
"CURRENT_DATE",
read={
"": "CURRENT_DATE",
"snowflake": "CURRENT_DATE()",
},
)
self.validate_all(
"CURRENT_TIME",
read={
"": "CURRENT_TIME",
"snowflake": "CURRENT_TIME()",
},
)
self.validate_all(
"CURRENT_TIMESTAMP",
read={
"": "CURRENT_TIMESTAMP",
"snowflake": "CURRENT_TIMESTAMP()",
},
)
self.validate_all(
"SELECT DATE('2020-01-01 16:03:05')",
read={
"snowflake": "SELECT CAST('2020-01-01 16:03:05' AS DATE)",
},
)
self.validate_all(
"SELECT CAST([a].[b] AS SMALLINT) FROM foo",
write={
"sqlite": 'SELECT CAST("a"."b" AS INTEGER) FROM foo',
"spark": "SELECT CAST(`a`.`b` AS SMALLINT) FROM foo",
},
)
self.validate_all(
"EDITDIST3(col1, col2)",
read={
"sqlite": "EDITDIST3(col1, col2)",
"spark": "LEVENSHTEIN(col1, col2)",
},
write={
"sqlite": "EDITDIST3(col1, col2)",
"spark": "LEVENSHTEIN(col1, col2)",
},
)
self.validate_all(
"SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname",
write={
"spark": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname",
"sqlite": "SELECT fname, lname, age FROM person ORDER BY age DESC NULLS FIRST, fname ASC NULLS LAST, lname",
},
)
self.validate_all("x", read={"snowflake": "LEAST(x)"})
self.validate_all("MIN(x)", read={"snowflake": "MIN(x)"}, write={"snowflake": "MIN(x)"})
self.validate_all(
"MIN(x, y, z)",
read={"snowflake": "LEAST(x, y, z)"},
write={"snowflake": "LEAST(x, y, z)"},
)
self.validate_identity(
"SELECT * FROM station WHERE city IS NOT ''",
"SELECT * FROM station WHERE NOT city IS ''",
)
def test_strftime(self):
self.validate_identity("SELECT STRFTIME('%Y/%m/%d', 'now')")
self.validate_identity("SELECT STRFTIME('%Y-%m-%d', '2016-10-16', 'start of month')")
self.validate_identity(
"SELECT STRFTIME('%s')",
"SELECT STRFTIME('%s', CURRENT_TIMESTAMP)",
)
self.validate_all(
"SELECT STRFTIME('%Y-%m-%d', '2020-01-01 12:05:03')",
write={
"duckdb": "SELECT STRFTIME(CAST('2020-01-01 12:05:03' AS TIMESTAMP), '%Y-%m-%d')",
"sqlite": "SELECT STRFTIME('%Y-%m-%d', '2020-01-01 12:05:03')",
},
)
self.validate_all(
"SELECT STRFTIME('%Y-%m-%d', CURRENT_TIMESTAMP)",
write={
"duckdb": "SELECT STRFTIME(CAST(CURRENT_TIMESTAMP AS TIMESTAMP), '%Y-%m-%d')",
"sqlite": "SELECT STRFTIME('%Y-%m-%d', CURRENT_TIMESTAMP)",
},
)
def test_datediff(self):
self.validate_all(
"DATEDIFF(a, b, 'day')",
write={"sqlite": "CAST((JULIANDAY(a) - JULIANDAY(b)) AS INTEGER)"},
)
self.validate_all(
"DATEDIFF(a, b, 'hour')",
write={"sqlite": "CAST((JULIANDAY(a) - JULIANDAY(b)) * 24.0 AS INTEGER)"},
)
self.validate_all(
"DATEDIFF(a, b, 'year')",
write={"sqlite": "CAST((JULIANDAY(a) - JULIANDAY(b)) / 365.0 AS INTEGER)"},
)
def test_hexadecimal_literal(self):
self.validate_all(
"SELECT 0XCC",
write={
"sqlite": "SELECT x'CC'",
"mysql": "SELECT x'CC'",
},
)
def test_window_null_treatment(self):
self.validate_all(
"SELECT FIRST_VALUE(Name) OVER (PARTITION BY AlbumId ORDER BY Bytes DESC) AS LargestTrack FROM tracks",
write={
"sqlite": "SELECT FIRST_VALUE(Name) OVER (PARTITION BY AlbumId ORDER BY Bytes DESC) AS LargestTrack FROM tracks"
},
)
def test_longvarchar_dtype(self):
self.validate_all(
"CREATE TABLE foo (bar LONGVARCHAR)",
write={"sqlite": "CREATE TABLE foo (bar TEXT)"},
)
def test_warnings(self):
with self.assertLogs(helper_logger) as cm:
self.validate_identity(
"SELECT * FROM t AS t(c1, c2)",
"SELECT * FROM t AS t",
)
self.assertIn("Named columns are not supported in table alias.", cm.output[0])
def test_ddl(self):
for conflict_action in ("ABORT", "FAIL", "IGNORE", "REPLACE", "ROLLBACK"):
with self.subTest(f"ON CONFLICT {conflict_action}"):
self.validate_identity("CREATE TABLE a (b, c, UNIQUE (b, c) ON CONFLICT IGNORE)")
self.validate_identity("INSERT OR ABORT INTO foo (x, y) VALUES (1, 2)")
self.validate_identity("INSERT OR FAIL INTO foo (x, y) VALUES (1, 2)")
self.validate_identity("INSERT OR IGNORE INTO foo (x, y) VALUES (1, 2)")
self.validate_identity("INSERT OR REPLACE INTO foo (x, y) VALUES (1, 2)")
self.validate_identity("INSERT OR ROLLBACK INTO foo (x, y) VALUES (1, 2)")
self.validate_identity("CREATE TABLE foo (id INTEGER PRIMARY KEY ASC)")
self.validate_identity("CREATE TEMPORARY TABLE foo (id INTEGER)")
self.validate_all(
"""
CREATE TABLE "Track"
(
CONSTRAINT "PK_Track" FOREIGN KEY ("TrackId"),
FOREIGN KEY ("AlbumId") REFERENCES "Album" (
"AlbumId"
) ON DELETE NO ACTION ON UPDATE NO ACTION,
FOREIGN KEY ("AlbumId") ON DELETE CASCADE ON UPDATE RESTRICT,
FOREIGN KEY ("AlbumId") ON DELETE SET NULL ON UPDATE SET DEFAULT
)
""",
write={
"sqlite": """CREATE TABLE "Track" (
CONSTRAINT "PK_Track" FOREIGN KEY ("TrackId"),
FOREIGN KEY ("AlbumId") REFERENCES "Album" (
"AlbumId"
) ON DELETE NO ACTION ON UPDATE NO ACTION,
FOREIGN KEY ("AlbumId") ON DELETE CASCADE ON UPDATE RESTRICT,
FOREIGN KEY ("AlbumId") ON DELETE SET NULL ON UPDATE SET DEFAULT
)""",
},
pretty=True,
)
self.validate_all(
"CREATE TABLE z (a INTEGER UNIQUE PRIMARY KEY AUTOINCREMENT)",
read={
"mysql": "CREATE TABLE z (a INT UNIQUE PRIMARY KEY AUTO_INCREMENT)",
"postgres": "CREATE TABLE z (a INT GENERATED BY DEFAULT AS IDENTITY NOT NULL UNIQUE PRIMARY KEY)",
},
write={
"sqlite": "CREATE TABLE z (a INTEGER UNIQUE PRIMARY KEY AUTOINCREMENT)",
"mysql": "CREATE TABLE z (a INT UNIQUE PRIMARY KEY AUTO_INCREMENT)",
"postgres": "CREATE TABLE z (a INT GENERATED BY DEFAULT AS IDENTITY NOT NULL UNIQUE PRIMARY KEY)",
},
)
self.validate_all(
"""CREATE TABLE "x" ("Name" NVARCHAR(200) NOT NULL)""",
write={
"sqlite": """CREATE TABLE "x" ("Name" TEXT(200) NOT NULL)""",
"mysql": "CREATE TABLE `x` (`Name` VARCHAR(200) NOT NULL)",
},
)
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