private MyCatSchemaCollection GetTable(string sql)
        {
            MyCatSchemaCollection c      = new MyCatSchemaCollection();
            MyCatCommand          cmd    = new MyCatCommand(sql, connection);
            MyCatDataReader       reader = cmd.ExecuteReader();

            // add columns
            for (int i = 0; i < reader.FieldCount; i++)
            {
                c.AddColumn(reader.GetName(i), reader.GetFieldType(i));
            }

            using (reader)
            {
                while (reader.Read())
                {
                    MyCatSchemaRow row = c.AddRow();
                    for (int i = 0; i < reader.FieldCount; i++)
                    {
                        row[i] = reader.GetValue(i);
                    }
                }
            }
            return(c);
        }
        private static void ParseConstraint(MyCatSchemaCollection fkTable, MyCatSchemaRow table,
                                            MyCatTokenizer tokenizer, bool includeColumns)
        {
            string         name = tokenizer.NextToken();
            MyCatSchemaRow row  = fkTable.AddRow();

            // make sure this constraint is a FK
            string token = tokenizer.NextToken();

            if (token != "foreign" || tokenizer.Quoted)
            {
                return;
            }
            tokenizer.NextToken(); // read off the 'KEY' symbol
            tokenizer.NextToken(); // read off the '(' symbol

            row["CONSTRAINT_CATALOG"]       = table["TABLE_CATALOG"];
            row["CONSTRAINT_SCHEMA"]        = table["TABLE_SCHEMA"];
            row["TABLE_CATALOG"]            = table["TABLE_CATALOG"];
            row["TABLE_SCHEMA"]             = table["TABLE_SCHEMA"];
            row["TABLE_NAME"]               = table["TABLE_NAME"];
            row["REFERENCED_TABLE_CATALOG"] = null;
            row["CONSTRAINT_NAME"]          = name.Trim(new char[] { '\'', '`' });

            List <string> srcColumns = includeColumns ? ParseColumns(tokenizer) : null;

            // now look for the references section
            while (token != "references" || tokenizer.Quoted)
            {
                token = tokenizer.NextToken();
            }
            string target1 = tokenizer.NextToken();
            string target2 = tokenizer.NextToken();

            if (target2.StartsWith(".", StringComparison.Ordinal))
            {
                row["REFERENCED_TABLE_SCHEMA"] = target1;
                row["REFERENCED_TABLE_NAME"]   = target2.Substring(1).Trim(new char[] { '\'', '`' });
                tokenizer.NextToken();  // read off the '('
            }
            else
            {
                row["REFERENCED_TABLE_SCHEMA"] = table["TABLE_SCHEMA"];
                row["REFERENCED_TABLE_NAME"]   = target1.Substring(1).Trim(new char[] { '\'', '`' });;
            }

            // if we are supposed to include columns, read the target columns
            List <string> targetColumns = includeColumns ? ParseColumns(tokenizer) : null;

            if (includeColumns)
            {
                ProcessColumns(fkTable, row, srcColumns, targetColumns);
            }
            else
            {
                fkTable.Rows.Add(row);
            }
        }
        public virtual MyCatSchemaCollection GetIndexes(string[] restrictions)
        {
            MyCatSchemaCollection dt = new MyCatSchemaCollection("Indexes");

            dt.AddColumn("INDEX_CATALOG", typeof(string));
            dt.AddColumn("INDEX_SCHEMA", typeof(string));
            dt.AddColumn("INDEX_NAME", typeof(string));
            dt.AddColumn("TABLE_NAME", typeof(string));
            dt.AddColumn("UNIQUE", typeof(bool));
            dt.AddColumn("PRIMARY", typeof(bool));
            dt.AddColumn("TYPE", typeof(string));
            dt.AddColumn("COMMENT", typeof(string));

            // Get the list of tables first
            int max = restrictions == null ? 4 : restrictions.Length;

            string[] tableRestrictions = new string[Math.Max(max, 4)];
            if (restrictions != null)
            {
                restrictions.CopyTo(tableRestrictions, 0);
            }
            tableRestrictions[3] = "BASE TABLE";
            MyCatSchemaCollection tables = GetTables(tableRestrictions);

            foreach (MyCatSchemaRow table in tables.Rows)
            {
                string sql = String.Format("SHOW INDEX FROM `{0}`.`{1}`",
                                           MyCatHelper.DoubleQuoteString((string)table["TABLE_SCHEMA"]),
                                           MyCatHelper.DoubleQuoteString((string)table["TABLE_NAME"]));
                MyCatSchemaCollection indexes = QueryCollection("indexes", sql);

                foreach (MyCatSchemaRow index in indexes.Rows)
                {
                    long seq_index = (long)index["SEQ_IN_INDEX"];
                    if (seq_index != 1)
                    {
                        continue;
                    }
                    if (restrictions != null && restrictions.Length == 4 &&
                        restrictions[3] != null &&
                        !index["KEY_NAME"].Equals(restrictions[3]))
                    {
                        continue;
                    }
                    MyCatSchemaRow row = dt.AddRow();
                    row["INDEX_CATALOG"] = null;
                    row["INDEX_SCHEMA"]  = table["TABLE_SCHEMA"];
                    row["INDEX_NAME"]    = index["KEY_NAME"];
                    row["TABLE_NAME"]    = index["TABLE"];
                    row["UNIQUE"]        = (long)index["NON_UNIQUE"] == 0;
                    row["PRIMARY"]       = index["KEY_NAME"].Equals("PRIMARY");
                    row["TYPE"]          = index["INDEX_TYPE"];
                    row["COMMENT"]       = index["COMMENT"];
                }
            }

            return(dt);
        }
 protected static void FillTable(MyCatSchemaCollection dt, object[][] data)
 {
     foreach (object[] dataItem in data)
     {
         MyCatSchemaRow row = dt.AddRow();
         for (int i = 0; i < dataItem.Length; i++)
         {
             row[i] = dataItem[i];
         }
     }
 }
        private MyCatSchemaCollection GetDataSourceInformation()
        {
#if NETSTANDARD1_3
            throw new NotSupportedException();
#else
            MyCatSchemaCollection dt = new MyCatSchemaCollection("DataSourceInformation");
            dt.AddColumn("CompositeIdentifierSeparatorPattern", typeof(string));
            dt.AddColumn("DataSourceProductName", typeof(string));
            dt.AddColumn("DataSourceProductVersion", typeof(string));
            dt.AddColumn("DataSourceProductVersionNormalized", typeof(string));
            dt.AddColumn("GroupByBehavior", typeof(GroupByBehavior));
            dt.AddColumn("IdentifierPattern", typeof(string));
            dt.AddColumn("IdentifierCase", typeof(IdentifierCase));
            dt.AddColumn("OrderByColumnsInSelect", typeof(bool));
            dt.AddColumn("ParameterMarkerFormat", typeof(string));
            dt.AddColumn("ParameterMarkerPattern", typeof(string));
            dt.AddColumn("ParameterNameMaxLength", typeof(int));
            dt.AddColumn("ParameterNamePattern", typeof(string));
            dt.AddColumn("QuotedIdentifierPattern", typeof(string));
            dt.AddColumn("QuotedIdentifierCase", typeof(IdentifierCase));
            dt.AddColumn("StatementSeparatorPattern", typeof(string));
            dt.AddColumn("StringLiteralPattern", typeof(string));
            dt.AddColumn("SupportedJoinOperators", typeof(SupportedJoinOperators));

            DBVersion v   = connection.driver.Version;
            string    ver = String.Format("{0:0}.{1:0}.{2:0}",
                                          v.Major, v.Minor, v.Build);

            MyCatSchemaRow row = dt.AddRow();
            row["CompositeIdentifierSeparatorPattern"] = "\\.";
            row["DataSourceProductName"]              = "MySQL";
            row["DataSourceProductVersion"]           = connection.ServerVersion;
            row["DataSourceProductVersionNormalized"] = ver;
            row["GroupByBehavior"]   = GroupByBehavior.Unrelated;
            row["IdentifierPattern"] =
                @"(^\`\p{Lo}\p{Lu}\p{Ll}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Nd}@$#_]*$)|(^\`[^\`\0]|\`\`+\`$)|(^\"" + [^\""\0]|\""\""+\""$)";
            row["IdentifierCase"]         = IdentifierCase.Insensitive;
            row["OrderByColumnsInSelect"] = false;
            row["ParameterMarkerFormat"]  = "{0}";
            row["ParameterMarkerPattern"] = "(@[A-Za-z0-9_$#]*)";
            row["ParameterNameMaxLength"] = 128;
            row["ParameterNamePattern"]   =
                @"^[\p{Lo}\p{Lu}\p{Ll}\p{Lm}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Lm}\p{Nd}\uff3f_@#\$]*(?=\s+|$)";
            row["QuotedIdentifierPattern"]   = @"(([^\`]|\`\`)*)";
            row["QuotedIdentifierCase"]      = IdentifierCase.Sensitive;
            row["StatementSeparatorPattern"] = ";";
            row["StringLiteralPattern"]      = "'(([^']|'')*)'";
            row["SupportedJoinOperators"]    = 15;
            dt.Rows.Add(row);

            return(dt);
#endif
        }
 private static void ProcessColumns(MyCatSchemaCollection fkTable, MyCatSchemaRow row, List <string> srcColumns, List <string> targetColumns)
 {
     for (int i = 0; i < srcColumns.Count; i++)
     {
         MyCatSchemaRow newRow = fkTable.AddRow();
         row.CopyRow(newRow);
         newRow["COLUMN_NAME"]            = srcColumns[i];
         newRow["ORDINAL_POSITION"]       = i;
         newRow["REFERENCED_COLUMN_NAME"] = targetColumns[i];
         fkTable.Rows.Add(newRow);
     }
 }
        private void FindTables(MyCatSchemaCollection schema, string[] restrictions)
        {
            StringBuilder sql = new StringBuilder();

            StringBuilder where = new StringBuilder();
            sql.AppendFormat(CultureInfo.InvariantCulture,
                             "SHOW TABLE STATUS FROM `{0}`", restrictions[1]);
            if (restrictions != null && restrictions.Length >= 3 &&
                restrictions[2] != null)
            {
                where.AppendFormat(CultureInfo.InvariantCulture,
                                   " LIKE '{0}'", restrictions[2]);
            }
            sql.Append(where.ToString());

            string table_type = restrictions[1].ToLower() == "information_schema"
                        ?
                                "SYSTEM VIEW"
                        : "BASE TABLE";

            MyCatCommand cmd = new MyCatCommand(sql.ToString(), connection);

            using (MyCatDataReader reader = cmd.ExecuteReader())
            {
                while (reader.Read())
                {
                    MyCatSchemaRow row = schema.AddRow();
                    row["TABLE_CATALOG"]   = null;
                    row["TABLE_SCHEMA"]    = restrictions[1];
                    row["TABLE_NAME"]      = reader.GetString(0);
                    row["TABLE_TYPE"]      = table_type;
                    row["ENGINE"]          = GetString(reader, 1);
                    row["VERSION"]         = reader.GetValue(2);
                    row["ROW_FORMAT"]      = GetString(reader, 3);
                    row["TABLE_ROWS"]      = reader.GetValue(4);
                    row["AVG_ROW_LENGTH"]  = reader.GetValue(5);
                    row["DATA_LENGTH"]     = reader.GetValue(6);
                    row["MAX_DATA_LENGTH"] = reader.GetValue(7);
                    row["INDEX_LENGTH"]    = reader.GetValue(8);
                    row["DATA_FREE"]       = reader.GetValue(9);
                    row["AUTO_INCREMENT"]  = reader.GetValue(10);
                    row["CREATE_TIME"]     = reader.GetValue(11);
                    row["UPDATE_TIME"]     = reader.GetValue(12);
                    row["CHECK_TIME"]      = reader.GetValue(13);
                    row["TABLE_COLLATION"] = GetString(reader, 14);
                    row["CHECKSUM"]        = reader.GetValue(15);
                    row["CREATE_OPTIONS"]  = GetString(reader, 16);
                    row["TABLE_COMMENT"]   = GetString(reader, 17);
                }
            }
        }
        public virtual MyCatSchemaCollection GetUDF(string[] restrictions)
        {
            string sql = "SELECT name,ret,dl FROM mysql.func";

            if (restrictions != null)
            {
                if (restrictions.Length >= 1 && !String.IsNullOrEmpty(restrictions[0]))
                {
                    sql += String.Format(" WHERE name LIKE '{0}'", restrictions[0]);
                }
            }

            MyCatSchemaCollection dt = new MyCatSchemaCollection("User-defined Functions");

            dt.AddColumn("NAME", typeof(string));
            dt.AddColumn("RETURN_TYPE", typeof(int));
            dt.AddColumn("LIBRARY_NAME", typeof(string));

            MyCatCommand cmd = new MyCatCommand(sql, connection);

            try
            {
                using (MyCatDataReader reader = cmd.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        MyCatSchemaRow row = dt.AddRow();
                        row[0] = reader.GetString(0);
                        row[1] = reader.GetInt32(1);
                        row[2] = reader.GetString(2);
                    }
                }
            }
            catch (MyCatException ex)
            {
                if (ex.Number != (int)MyCatErrorCode.TableAccessDenied)
                {
                    throw;
                }
                throw new MyCatException(Resources.UnableToEnumerateUDF, ex);
            }

            return(dt);
        }
        private void LoadTableColumns(MyCatSchemaCollection schemaCollection, string schema,
                                      string tableName, string columnRestriction)
        {
            string sql = String.Format("SHOW FULL COLUMNS FROM `{0}`.`{1}`",
                                       schema, tableName);
            MyCatCommand cmd = new MyCatCommand(sql, connection);

            int pos = 1;

            using (MyCatDataReader reader = cmd.ExecuteReader())
            {
                while (reader.Read())
                {
                    string colName = reader.GetString(0);
                    if (columnRestriction != null && colName != columnRestriction)
                    {
                        continue;
                    }
                    MyCatSchemaRow row = schemaCollection.AddRow();
                    row["TABLE_CATALOG"]            = DBNull.Value;
                    row["TABLE_SCHEMA"]             = schema;
                    row["TABLE_NAME"]               = tableName;
                    row["COLUMN_NAME"]              = colName;
                    row["ORDINAL_POSITION"]         = pos++;
                    row["COLUMN_DEFAULT"]           = reader.GetValue(5);
                    row["IS_NULLABLE"]              = reader.GetString(3);
                    row["DATA_TYPE"]                = reader.GetString(1);
                    row["CHARACTER_MAXIMUM_LENGTH"] = DBNull.Value;
                    row["CHARACTER_OCTET_LENGTH"]   = DBNull.Value;
                    row["NUMERIC_PRECISION"]        = DBNull.Value;
                    row["NUMERIC_SCALE"]            = DBNull.Value;
                    row["CHARACTER_SET_NAME"]       = reader.GetValue(2);
                    row["COLLATION_NAME"]           = row["CHARACTER_SET_NAME"];
                    row["COLUMN_TYPE"]              = reader.GetString(1);
                    row["COLUMN_KEY"]               = reader.GetString(4);
                    row["EXTRA"]          = reader.GetString(6);
                    row["PRIVILEGES"]     = reader.GetString(7);
                    row["COLUMN_COMMENT"] = reader.GetString(8);
                    ParseColumnRow(row);
                }
            }
        }
        public virtual MyCatSchemaCollection GetDatabases(string[] restrictions)
        {
            Regex regex       = null;
            int   caseSetting = Int32.Parse(connection.driver.Property("lower_case_table_names"));

            string sql = "SHOW DATABASES";

            // if lower_case_table_names is zero, then case lookup should be sensitive
            // so we can use LIKE to do the matching.
            if (caseSetting == 0)
            {
                if (restrictions != null && restrictions.Length >= 1)
                {
                    sql = sql + " LIKE '" + restrictions[0] + "'";
                }
            }

            MyCatSchemaCollection c = QueryCollection("Databases", sql);

            if (caseSetting != 0 && restrictions != null && restrictions.Length >= 1 && restrictions[0] != null)
            {
                regex = new Regex(restrictions[0], RegexOptions.IgnoreCase);
            }

            MyCatSchemaCollection c2 = new MyCatSchemaCollection("Databases");

            c2.AddColumn("CATALOG_NAME", typeof(string));
            c2.AddColumn("SCHEMA_NAME", typeof(string));

            foreach (MyCatSchemaRow row in c.Rows)
            {
                if (regex != null && !regex.Match(row[0].ToString()).Success)
                {
                    continue;
                }
                MyCatSchemaRow newRow = c2.AddRow();
                newRow[1] = row[0];
            }
            return(c2);
        }
        private static MyCatSchemaCollection GetReservedWords()
        {
            MyCatSchemaCollection dt = new MyCatSchemaCollection("ReservedWords");

#if !NETSTANDARD1_3
            dt.AddColumn(DbMetaDataColumnNames.ReservedWord, typeof(string));
            Stream str = Assembly.GetExecutingAssembly().GetManifestResourceStream(
                "Pomelo.Data.MyCat.Properties.ReservedWords.txt");
#else
            dt.AddColumn("ReservedWord", typeof(string));
            Stream str = typeof(SchemaProvider).GetTypeInfo().Assembly.GetManifestResourceStream("Pomelo.Data.MyCat.Properties.ReservedWords.txt");
#endif
            StreamReader sr   = new StreamReader(str);
            string       line = sr.ReadLine();
            while (line != null)
            {
                string[] keywords = line.Split(new char[] { ' ' });
                foreach (string s in keywords)
                {
                    if (String.IsNullOrEmpty(s))
                    {
                        continue;
                    }
                    MyCatSchemaRow row = dt.AddRow();
                    row[0] = s;
                }
                line = sr.ReadLine();
            }
#if NETSTANDARD1_3
            sr.Dispose();
            str.Dispose();
#else
            sr.Close();
            str.Close();
#endif


            return(dt);
        }
        public virtual MyCatSchemaCollection GetProcedures(string[] restrictions)
        {
            MyCatSchemaCollection dt = new MyCatSchemaCollection("Procedures");

            dt.AddColumn("SPECIFIC_NAME", typeof(string));
            dt.AddColumn("ROUTINE_CATALOG", typeof(string));
            dt.AddColumn("ROUTINE_SCHEMA", typeof(string));
            dt.AddColumn("ROUTINE_NAME", typeof(string));
            dt.AddColumn("ROUTINE_TYPE", typeof(string));
            dt.AddColumn("DTD_IDENTIFIER", typeof(string));
            dt.AddColumn("ROUTINE_BODY", typeof(string));
            dt.AddColumn("ROUTINE_DEFINITION", typeof(string));
            dt.AddColumn("EXTERNAL_NAME", typeof(string));
            dt.AddColumn("EXTERNAL_LANGUAGE", typeof(string));
            dt.AddColumn("PARAMETER_STYLE", typeof(string));
            dt.AddColumn("IS_DETERMINISTIC", typeof(string));
            dt.AddColumn("SQL_DATA_ACCESS", typeof(string));
            dt.AddColumn("SQL_PATH", typeof(string));
            dt.AddColumn("SECURITY_TYPE", typeof(string));
            dt.AddColumn("CREATED", typeof(DateTime));
            dt.AddColumn("LAST_ALTERED", typeof(DateTime));
            dt.AddColumn("SQL_MODE", typeof(string));
            dt.AddColumn("ROUTINE_COMMENT", typeof(string));
            dt.AddColumn("DEFINER", typeof(string));

            StringBuilder sql = new StringBuilder("SELECT * FROM mysql.proc WHERE 1=1");

            if (restrictions != null)
            {
                if (restrictions.Length >= 2 && restrictions[1] != null)
                {
                    sql.AppendFormat(CultureInfo.InvariantCulture,
                                     " AND db LIKE '{0}'", restrictions[1]);
                }
                if (restrictions.Length >= 3 && restrictions[2] != null)
                {
                    sql.AppendFormat(CultureInfo.InvariantCulture,
                                     " AND name LIKE '{0}'", restrictions[2]);
                }
                if (restrictions.Length >= 4 && restrictions[3] != null)
                {
                    sql.AppendFormat(CultureInfo.InvariantCulture,
                                     " AND type LIKE '{0}'", restrictions[3]);
                }
            }

            MyCatCommand cmd = new MyCatCommand(sql.ToString(), connection);

            using (MyCatDataReader reader = cmd.ExecuteReader())
            {
                while (reader.Read())
                {
                    MyCatSchemaRow row = dt.AddRow();
                    row["SPECIFIC_NAME"]   = reader.GetString("specific_name");
                    row["ROUTINE_CATALOG"] = DBNull.Value;
                    row["ROUTINE_SCHEMA"]  = reader.GetString("db");
                    row["ROUTINE_NAME"]    = reader.GetString("name");
                    string routineType = reader.GetString("type");
                    row["ROUTINE_TYPE"]   = routineType;
                    row["DTD_IDENTIFIER"] = StringUtility.ToLowerInvariant(routineType) == "function" ?
                                            (object)reader.GetString("returns") : DBNull.Value;
                    row["ROUTINE_BODY"]       = "SQL";
                    row["ROUTINE_DEFINITION"] = reader.GetString("body");
                    row["EXTERNAL_NAME"]      = DBNull.Value;
                    row["EXTERNAL_LANGUAGE"]  = DBNull.Value;
                    row["PARAMETER_STYLE"]    = "SQL";
                    row["IS_DETERMINISTIC"]   = reader.GetString("is_deterministic");
                    row["SQL_DATA_ACCESS"]    = reader.GetString("sql_data_access");
                    row["SQL_PATH"]           = DBNull.Value;
                    row["SECURITY_TYPE"]      = reader.GetString("security_type");
                    row["CREATED"]            = reader.GetDateTime("created");
                    row["LAST_ALTERED"]       = reader.GetDateTime("modified");
                    row["SQL_MODE"]           = reader.GetString("sql_mode");
                    row["ROUTINE_COMMENT"]    = reader.GetString("comment");
                    row["DEFINER"]            = reader.GetString("definer");
                }
            }

            return(dt);
        }
        public virtual MyCatSchemaCollection GetIndexColumns(string[] restrictions)
        {
            MyCatSchemaCollection dt = new MyCatSchemaCollection("IndexColumns");

            dt.AddColumn("INDEX_CATALOG", typeof(string));
            dt.AddColumn("INDEX_SCHEMA", typeof(string));
            dt.AddColumn("INDEX_NAME", typeof(string));
            dt.AddColumn("TABLE_NAME", typeof(string));
            dt.AddColumn("COLUMN_NAME", typeof(string));
            dt.AddColumn("ORDINAL_POSITION", typeof(int));
            dt.AddColumn("SORT_ORDER", typeof(string));

            int max = restrictions == null ? 4 : restrictions.Length;

            string[] tableRestrictions = new string[Math.Max(max, 4)];
            if (restrictions != null)
            {
                restrictions.CopyTo(tableRestrictions, 0);
            }
            tableRestrictions[3] = "BASE TABLE";
            MyCatSchemaCollection tables = GetTables(tableRestrictions);

            foreach (MyCatSchemaRow table in tables.Rows)
            {
                string sql = String.Format("SHOW INDEX FROM `{0}`.`{1}`",
                                           table["TABLE_SCHEMA"], table["TABLE_NAME"]);
                MyCatCommand cmd = new MyCatCommand(sql, connection);
                using (MyCatDataReader reader = cmd.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        string key_name = GetString(reader, reader.GetOrdinal("KEY_NAME"));
                        string col_name = GetString(reader, reader.GetOrdinal("COLUMN_NAME"));

                        if (restrictions != null)
                        {
                            if (restrictions.Length >= 4 && restrictions[3] != null &&
                                key_name != restrictions[3])
                            {
                                continue;
                            }
                            if (restrictions.Length >= 5 && restrictions[4] != null &&
                                col_name != restrictions[4])
                            {
                                continue;
                            }
                        }
                        MyCatSchemaRow row = dt.AddRow();
                        row["INDEX_CATALOG"]    = null;
                        row["INDEX_SCHEMA"]     = table["TABLE_SCHEMA"];
                        row["INDEX_NAME"]       = key_name;
                        row["TABLE_NAME"]       = GetString(reader, reader.GetOrdinal("TABLE"));
                        row["COLUMN_NAME"]      = col_name;
                        row["ORDINAL_POSITION"] = reader.GetValue(reader.GetOrdinal("SEQ_IN_INDEX"));
                        row["SORT_ORDER"]       = reader.GetString("COLLATION");
                    }
                }
            }

            return(dt);
        }
        private void ParseProcedureBody(MyCatSchemaCollection parametersTable, string body,
                                        MyCatSchemaRow row, string nameToRestrict)
        {
            List <string> modes = new List <string>(new string[3] {
                "IN", "OUT", "INOUT"
            });

            string sqlMode = row["SQL_MODE"].ToString();

            int            pos       = 1;
            MyCatTokenizer tokenizer = new MyCatTokenizer(body);

            tokenizer.AnsiQuotes       = sqlMode.IndexOf("ANSI_QUOTES") != -1;
            tokenizer.BackslashEscapes = sqlMode.IndexOf("NO_BACKSLASH_ESCAPES") == -1;
            tokenizer.ReturnComments   = false;
            string token = tokenizer.NextToken();

            // this block will scan for the opening paren while also determining
            // if this routine is a function.  If so, then we need to add a
            // parameter row for the return parameter since it is ordinal position
            // 0 and should appear first.
            while (token != "(")
            {
                if (String.Compare(token, "FUNCTION", StringComparison.OrdinalIgnoreCase) == 0 &&
                    nameToRestrict == null)
                {
                    parametersTable.AddRow();
                    InitParameterRow(row, parametersTable.Rows[0]);
                }
                token = tokenizer.NextToken();
            }
            token = tokenizer.NextToken(); // now move to the next token past the (

            while (token != ")")
            {
                MyCatSchemaRow parmRow = parametersTable.NewRow();
                InitParameterRow(row, parmRow);
                parmRow["ORDINAL_POSITION"] = pos++;

                // handle mode and name for the parameter
                string mode = StringUtility.ToUpperInvariant(token);
                if (!tokenizer.Quoted && modes.Contains(mode))
                {
                    parmRow["PARAMETER_MODE"] = mode;
                    token = tokenizer.NextToken();
                }
                if (tokenizer.Quoted)
                {
                    token = token.Substring(1, token.Length - 2);
                }
                parmRow["PARAMETER_NAME"] = token;

                // now parse data type
                token = ParseDataType(parmRow, tokenizer);
                if (token == ",")
                {
                    token = tokenizer.NextToken();
                }

                // now determine if we should include this row after all
                // we need to parse it before this check so we are correctly
                // positioned for the next parameter
                if (nameToRestrict == null ||
                    String.Compare(parmRow["PARAMETER_NAME"].ToString(), nameToRestrict, StringComparison.OrdinalIgnoreCase) == 0)
                {
                    parametersTable.Rows.Add(parmRow);
                }
            }

            // now parse out the return parameter if there is one.
            token = StringUtility.ToUpperInvariant(tokenizer.NextToken());
            if (String.Compare(token, "RETURNS", StringComparison.OrdinalIgnoreCase) == 0)
            {
                MyCatSchemaRow parameterRow = parametersTable.Rows[0];
                parameterRow["PARAMETER_NAME"] = "RETURN_VALUE";
                ParseDataType(parameterRow, tokenizer);
            }
        }