🐛 fix typo in --mysql-insert-method parameter (#130)

techouse · mackuba · web-flow · commit 3fc65aa1e919 · 2024-10-26T12:50:21.000+01:00
* fixed mysql insert method parameter

* 🐛 fix MariaDB INSERT ON DUPLICATE KEY UPDATE

---------

Co-authored-by: Kuba Suder &lt;jakub.suder@gmail.com&gt;
diff --git a/src/sqlite3_to_mysql/mysql_utils.py b/src/sqlite3_to_mysql/mysql_utils.py
@@ -6,7 +6,6 @@
 from mysql.connector import CharacterSet
 from mysql.connector.charsets import MYSQL_CHARACTER_SETS
 from packaging import version
-from packaging.version import Version
 
 
 # Shamelessly copied from SQLAlchemy's dialects/mysql/__init__.py
@@ -112,30 +111,32 @@ def get_mysql_version(version_string: str) -> version.Version:
 
 def check_mysql_json_support(version_string: str) -> bool:
     """Check for MySQL JSON support."""
-    mysql_version: Version = get_mysql_version(version_string)
-    if version_string.lower().endswith("-mariadb"):
-        if mysql_version.major >= 10 and mysql_version.minor >= 2 and mysql_version.micro >= 7:
-            return True
-    else:
-        if mysql_version.major >= 8:
-            return True
-        if mysql_version.minor >= 7 and mysql_version.micro >= 8:
-            return True
-    return False
+    mysql_version: version.Version = get_mysql_version(version_string)
+    if "-mariadb" in version_string.lower():
+        return mysql_version >= version.parse("10.2.7")
+    return mysql_version >= version.parse("5.7.8")
+
+
+def check_mysql_values_alias_support(version_string: str) -> bool:
+    """Check for VALUES alias support.
+
+    Returns:
+        bool: True if VALUES alias is supported (MySQL 8.0.19+), False for MariaDB
+        or older MySQL versions.
+    """
+    mysql_version: version.Version = get_mysql_version(version_string)
+    if "-mariadb" in version_string.lower():
+        return False
+    # Only MySQL 8.0.19 and later support VALUES alias
+    return mysql_version >= version.parse("8.0.19")
 
 
 def check_mysql_fulltext_support(version_string: str) -> bool:
     """Check for FULLTEXT indexing support."""
-    mysql_version: Version = get_mysql_version(version_string)
-    if version_string.lower().endswith("-mariadb"):
-        if mysql_version.major >= 10 and mysql_version.minor >= 0 and mysql_version.micro >= 5:
-            return True
-    else:
-        if mysql_version.major >= 8:
-            return True
-        if mysql_version.minor >= 6:
-            return True
-    return False
+    mysql_version: version.Version = get_mysql_version(version_string)
+    if "-mariadb" in version_string.lower():
+        return mysql_version >= version.parse("10.0.5")
+    return mysql_version >= version.parse("5.6.0")
 
 
 def safe_identifier_length(identifier_name: str, max_length: int = 64) -> str:
diff --git a/src/sqlite3_to_mysql/transporter.py b/src/sqlite3_to_mysql/transporter.py
@@ -39,6 +39,7 @@
     MYSQL_TEXT_COLUMN_TYPES_WITH_JSON,
     check_mysql_fulltext_support,
     check_mysql_json_support,
+    check_mysql_values_alias_support,
     safe_identifier_length,
 )
 from .types import SQLite3toMySQLAttributes, SQLite3toMySQLParams
@@ -88,7 +89,7 @@ def __init__(self, **kwargs: tx.Unpack[SQLite3toMySQLParams]):
 
         self._mysql_database = kwargs.get("mysql_database", "transfer") or "transfer"
 
-        self._mysql_insert_method = str(kwargs.get("mysql_integer_type", "IGNORE")).upper()
+        self._mysql_insert_method = str(kwargs.get("mysql_insert_method", "IGNORE")).upper()
         if self._mysql_insert_method not in MYSQL_INSERT_METHOD:
             self._mysql_insert_method = "IGNORE"
 
@@ -722,21 +723,26 @@ def transfer(self) -> None:
                     columns: t.List[str] = [
                         safe_identifier_length(column[0]) for column in self._sqlite_cur.description
                     ]
+                    sql: str
                     if self._mysql_insert_method.upper() == "UPDATE":
-                        sql: str = (
-                            """
+                        sql = """
                             INSERT
                             INTO `{table}` ({fields})
-                            VALUES ({placeholders}) AS `__new__`
+                            {values_clause}
                             ON DUPLICATE KEY UPDATE {field_updates}
                         """.format(
-                                table=safe_identifier_length(table["name"]),
-                                fields=("`{}`, " * len(columns)).rstrip(" ,").format(*columns),
-                                placeholders=("%s, " * len(columns)).rstrip(" ,"),
-                                field_updates=("`{}`=`__new__`.`{}`, " * len(columns))
-                                .rstrip(" ,")
-                                .format(*list(chain.from_iterable((column, column) for column in columns))),
-                            )
+                            table=safe_identifier_length(table["name"]),
+                            fields=("`{}`, " * len(columns)).rstrip(" ,").format(*columns),
+                            values_clause=(
+                                "VALUES ({placeholders}) AS `__new__`"
+                                if check_mysql_values_alias_support(self._mysql_version)
+                                else "VALUES ({placeholders})"
+                            ).format(placeholders=("%s, " * len(columns)).rstrip(" ,")),
+                            field_updates=(
+                                ("`{}`=`__new__`.`{}`, " * len(columns)).rstrip(" ,")
+                                if check_mysql_values_alias_support(self._mysql_version)
+                                else ("`{}`=`{}`, " * len(columns)).rstrip(" ,")
+                            ).format(*list(chain.from_iterable((column, column) for column in columns))),
                         )
                     else:
                         sql = """
diff --git a/tests/func/sqlite3_to_mysql_test.py b/tests/func/sqlite3_to_mysql_test.py
@@ -59,7 +59,7 @@ def test_valid_sqlite_file_and_valid_mysql_credentials(
         mysql_credentials: MySQLCredentials,
         helpers: Helpers,
         quiet: bool,
-    ):
+    ) -> None:
         with helpers.not_raises(FileNotFoundError):
             SQLite3toMySQL(  # type: ignore
                 sqlite_file=sqlite_database,
diff --git a/tests/unit/mysql_utils_test.py b/tests/unit/mysql_utils_test.py
@@ -0,0 +1,87 @@
+import pytest
+from packaging.version import Version
+
+from sqlite3_to_mysql.mysql_utils import (
+    check_mysql_fulltext_support,
+    check_mysql_json_support,
+    check_mysql_values_alias_support,
+    get_mysql_version,
+    safe_identifier_length,
+)
+
+
+class TestMySQLUtils:
+    @pytest.mark.parametrize(
+        "version_string,expected",
+        [
+            ("5.7.7", Version("5.7.7")),
+            ("5.7.8", Version("5.7.8")),
+            ("8.0.0", Version("8.0.0")),
+            ("9.0.0", Version("9.0.0")),
+            ("10.2.6-mariadb", Version("10.2.6")),
+            ("10.2.7-mariadb", Version("10.2.7")),
+            ("11.4.0-mariadb", Version("11.4.0")),
+        ],
+    )
+    def test_get_mysql_version(self, version_string: str, expected: Version) -> None:
+        assert get_mysql_version(version_string) == expected
+
+    @pytest.mark.parametrize(
+        "version_string,expected",
+        [
+            ("5.7.7", False),
+            ("5.7.8", True),
+            ("8.0.0", True),
+            ("9.0.0", True),
+            ("10.2.6-mariadb", False),
+            ("10.2.7-mariadb", True),
+            ("11.4.0-mariadb", True),
+        ],
+    )
+    def test_check_mysql_json_support(self, version_string: str, expected: bool) -> None:
+        assert check_mysql_json_support(version_string) == expected
+
+    @pytest.mark.parametrize(
+        "version_string,expected",
+        [
+            ("5.7.8", False),
+            ("8.0.0", False),
+            ("8.0.18", False),
+            ("8.0.19", True),
+            ("9.0.0", True),
+            ("10.2.6-mariadb", False),
+            ("10.2.7-mariadb", False),
+            ("11.4.0-mariadb", False),
+        ],
+    )
+    def test_check_mysql_values_alias_support(self, version_string: str, expected: bool) -> None:
+        assert check_mysql_values_alias_support(version_string) == expected
+
+    @pytest.mark.parametrize(
+        "version_string,expected",
+        [
+            ("5.0.0", False),
+            ("5.5.0", False),
+            ("5.6.0", True),
+            ("8.0.0", True),
+            ("10.0.4-mariadb", False),
+            ("10.0.5-mariadb", True),
+            ("10.2.6-mariadb", True),
+            ("11.4.0-mariadb", True),
+        ],
+    )
+    def test_check_mysql_fulltext_support(self, version_string: str, expected: bool) -> None:
+        assert check_mysql_fulltext_support(version_string) == expected
+
+    @pytest.mark.parametrize(
+        "identifier,expected",
+        [
+            ("a" * 67, "a" * 64),
+            ("a" * 66, "a" * 64),
+            ("a" * 65, "a" * 64),
+            ("a" * 64, "a" * 64),
+            ("a" * 63, "a" * 63),
+        ],
+    )
+    def test_safe_identifier_length(self, identifier: str, expected: str) -> None:
+        assert safe_identifier_length(identifier) == expected
