Add support for ADO.NET "ReservedWords" collection schema (#558).

Author: fedesasso

src/MySqlConnector/Core/SchemaProvider.cs

@@ -16,7 +16,8 @@ public SchemaProvider(MySqlConnection connection)
 			{
 				{ "MetaDataCollections", FillMetadataCollections },
 				{ "DataTypes", FillDataTypes },
-				{ "Procedures", FillProcedures }
+				{ "Procedures", FillProcedures },
+				{ "ReservedWords", FillReservedWords }
 			};
 		}
 
@@ -178,6 +179,294 @@ private void FillProcedures(DataTable dataTable)
 			close?.Invoke();
 		}
 
+		private void FillReservedWords(DataTable dataTable)
+		{
+			dataTable.Columns.Add(new DataColumn("ReservedWord", typeof(string)));
+
+			// Note:
+			// For MySQL 8.0, the INFORMATION_SCHEMA.KEYWORDS table could be used to load the list at runtime,
+			// unfortunately this bug https://bugs.mysql.com/bug.php?id=90160 makes it impratical to do it
+			// (the bug is marked as fixed in MySQL 8.0.13, not published yet at the time of writing this note).
+			//
+			// Note:
+			// Once the previously mentioned bug will be fixed, for versions >= 8.0.13 reserved words could be
+			// loaded at runtime form INFORMATION_SCHEMA.KEYWORDS, and for other versions the hard coded list
+			// could be used (notice the list could change with the release, adopting the 8.0.12 list is a
+			// suboptimal one-size-fits-it-all solution.
+			// To get the current MySQL version at runtime one could query SELECT VERSION(); which returns a
+			// version followed by a suffix. The problem is that MariaDB 10.0 is only compatible with MySQL 5.6
+			// (but has a higher version number)
+
+			// select word from information_schema.keywords where reserved = 1; on MySQL Server 8.0.12
+			var reservedWords = new[]
+			{
+			  "ACCESSIBLE",
+			  "ADD",
+			  "ALL",
+			  "ALTER",
+			  "ANALYZE",
+			  "AND",
+			  "AS",
+			  "ASC",
+			  "ASENSITIVE",
+			  "BEFORE",
+			  "BETWEEN",
+			  "BIGINT",
+			  "BINARY",
+			  "BLOB",
+			  "BOTH",
+			  "BY",
+			  "CALL",
+			  "CASCADE",
+			  "CASE",
+			  "CHANGE",
+			  "CHAR",
+			  "CHARACTER",
+			  "CHECK",
+			  "COLLATE",
+			  "COLUMN",
+			  "CONDITION",
+			  "CONSTRAINT",
+			  "CONTINUE",
+			  "CONVERT",
+			  "CREATE",
+			  "CROSS",
+			  "CUBE",
+			  "CUME_DIST",
+			  "CURRENT_DATE",
+			  "CURRENT_TIME",
+			  "CURRENT_TIMESTAMP",
+			  "CURRENT_USER",
+			  "CURSOR",
+			  "DATABASE",
+			  "DATABASES",
+			  "DAY_HOUR",
+			  "DAY_MICROSECOND",
+			  "DAY_MINUTE",
+			  "DAY_SECOND",
+			  "DEC",
+			  "DECIMAL",
+			  "DECLARE",
+			  "DEFAULT",
+			  "DELAYED",
+			  "DELETE",
+			  "DENSE_RANK",
+			  "DESC",
+			  "DESCRIBE",
+			  "DETERMINISTIC",
+			  "DISTINCT",
+			  "DISTINCTROW",
+			  "DIV",
+			  "DOUBLE",
+			  "DROP",
+			  "DUAL",
+			  "EACH",
+			  "ELSE",
+			  "ELSEIF",
+			  "EMPTY",
+			  "ENCLOSED",
+			  "ESCAPED",
+			  "EXCEPT",
+			  "EXISTS",
+			  "EXIT",
+			  "EXPLAIN",
+			  "FALSE",
+			  "FETCH",
+			  "FIRST_VALUE",
+			  "FLOAT",
+			  "FLOAT4",
+			  "FLOAT8",
+			  "FOR",
+			  "FORCE",
+			  "FOREIGN",
+			  "FROM",
+			  "FULLTEXT",
+			  "FUNCTION",
+			  "GENERATED",
+			  "GET",
+			  "GRANT",
+			  "GROUP",
+			  "GROUPING",
+			  "GROUPS",
+			  "HAVING",
+			  "HIGH_PRIORITY",
+			  "HOUR_MICROSECOND",
+			  "HOUR_MINUTE",
+			  "HOUR_SECOND",
+			  "IF",
+			  "IGNORE",
+			  "IN",
+			  "INDEX",
+			  "INFILE",
+			  "INNER",
+			  "INOUT",
+			  "INSENSITIVE",
+			  "INSERT",
+			  "INT",
+			  "INT1",
+			  "INT2",
+			  "INT3",
+			  "INT4",
+			  "INT8",
+			  "INTEGER",
+			  "INTERVAL",
+			  "INTO",
+			  "IO_AFTER_GTIDS",
+			  "IO_BEFORE_GTIDS",
+			  "IS",
+			  "ITERATE",
+			  "JOIN",
+			  "JSON_TABLE",
+			  "KEY",
+			  "KEYS",
+			  "KILL",
+			  "LAG",
+			  "LAST_VALUE",
+			  "LEAD",
+			  "LEADING",
+			  "LEAVE",
+			  "LEFT",
+			  "LIKE",
+			  "LIMIT",
+			  "LINEAR",
+			  "LINES",
+			  "LOAD",
+			  "LOCALTIME",
+			  "LOCALTIMESTAMP",
+			  "LOCK",
+			  "LONG",
+			  "LONGBLOB",
+			  "LONGTEXT",
+			  "LOOP",
+			  "LOW_PRIORITY",
+			  "MASTER_BIND",
+			  "MASTER_SSL_VERIFY_SERVER_CERT",
+			  "MATCH",
+			  "MAXVALUE",
+			  "MEDIUMBLOB",
+			  "MEDIUMINT",
+			  "MEDIUMTEXT",
+			  "MIDDLEINT",
+			  "MINUTE_MICROSECOND",
+			  "MINUTE_SECOND",
+			  "MOD",
+			  "MODIFIES",
+			  "NATURAL",
+			  "NOT",
+			  "NO_WRITE_TO_BINLOG",
+			  "NTH_VALUE",
+			  "NTILE",
+			  "NULL",
+			  "NUMERIC",
+			  "OF",
+			  "ON",
+			  "OPTIMIZE",
+			  "OPTIMIZER_COSTS",
+			  "OPTION",
+			  "OPTIONALLY",
+			  "OR",
+			  "ORDER",
+			  "OUT",
+			  "OUTER",
+			  "OUTFILE",
+			  "OVER",
+			  "PARTITION",
+			  "PERCENT_RANK",
+			  "PERSIST",
+			  "PERSIST_ONLY",
+			  "PRECISION",
+			  "PRIMARY",
+			  "PROCEDURE",
+			  "PURGE",
+			  "RANGE",
+			  "RANK",
+			  "READ",
+			  "READS",
+			  "READ_WRITE",
+			  "REAL",
+			  "RECURSIVE",
+			  "REFERENCES",
+			  "REGEXP",
+			  "RELEASE",
+			  "RENAME",
+			  "REPEAT",
+			  "REPLACE",
+			  "REQUIRE",
+			  "RESIGNAL",
+			  "RESTRICT",
+			  "RETURN",
+			  "REVOKE",
+			  "RIGHT",
+			  "RLIKE",
+			  "ROW",
+			  "ROWS",
+			  "ROW_NUMBER",
+			  "SCHEMA",
+			  "SCHEMAS",
+			  "SECOND_MICROSECOND",
+			  "SELECT",
+			  "SENSITIVE",
+			  "SEPARATOR",
+			  "SET",
+			  "SHOW",
+			  "SIGNAL",
+			  "SMALLINT",
+			  "SPATIAL",
+			  "SPECIFIC",
+			  "SQL",
+			  "SQLEXCEPTION",
+			  "SQLSTATE",
+			  "SQLWARNING",
+			  "SQL_BIG_RESULT",
+			  "SQL_CALC_FOUND_ROWS",
+			  "SQL_SMALL_RESULT",
+			  "SSL",
+			  "STARTING",
+			  "STORED",
+			  "STRAIGHT_JOIN",
+			  "SYSTEM",
+			  "TABLE",
+			  "TERMINATED",
+			  "THEN",
+			  "TINYBLOB",
+			  "TINYINT",
+			  "TINYTEXT",
+			  "TO",
+			  "TRAILING",
+			  "TRIGGER",
+			  "TRUE",
+			  "UNDO",
+			  "UNION",
+			  "UNIQUE",
+			  "UNLOCK",
+			  "UNSIGNED",
+			  "UPDATE",
+			  "USAGE",
+			  "USE",
+			  "USING",
+			  "UTC_DATE",
+			  "UTC_TIME",
+			  "UTC_TIMESTAMP",
+			  "VALUES",
+			  "VARBINARY",
+			  "VARCHAR",
+			  "VARCHARACTER",
+			  "VARYING",
+			  "VIRTUAL",
+			  "WHEN",
+			  "WHERE",
+			  "WHILE",
+			  "WINDOW",
+			  "WITH",
+			  "WRITE",
+			  "XOR",
+			  "YEAR_MONTH",
+			  "ZEROFILL",
+			};
+			foreach (string word in reservedWords)
+				dataTable.Rows.Add(word);
+		}
+
 		readonly MySqlConnection m_connection;
 		readonly Dictionary<string, Action<DataTable>> m_schemaCollections;
 	}