Ejemplo n.º 1
0
        /// <summary>
        /// Gets the issues.
        /// </summary>
        /// <param name="xElement">The x element.</param>
        /// <returns>IEnumerable&lt;IPlanIssueResult&gt;.</returns>
        protected override IEnumerable <IPlanIssueResult> GetIssues(XElement xElement)
        {
            var statmentType = this.StatementArgs.StatementType;

            if (!(Comparer.Equals(statmentType, "SELECT") || Comparer.Equals(statmentType, "UPDATE") ||
                  Comparer.Equals(statmentType, "INSERT") || Comparer.Equals(statmentType, "DELETE")))
            {
                yield break;
            }

            var statementSql = this.StatementArgs.StatementSql;

            /*the clr CAN NOT use the Microsoft.SqlServer.TransactSql.ScriptDom reference as it has a public static var that is not readonly.
             * So when we compile / push the CLR we need to not compile the code that uses it. If you try to push that dll as a reference this is the error you get:
             *
             * Creating [Microsoft.SqlServer.TransactSql.ScriptDom]...
             *	Warning: The SQL Server client assembly 'microsoft.sqlserver.transactsql.scriptdom, version=12.0.0.0, culture=neutral, publickeytoken=89845dcd8080cc91, processorarchitecture=msil.' you are registering is not fully tested in SQL Server hosted environment.
             *	(47,1): SQL72014: .Net SqlClient Data Provider: Msg 6211, Level 16, State 1, Line 1 CREATE ASSEMBLY failed because type 'antlr.Token' in safe assembly 'Microsoft.SqlServer.TransactSql.ScriptDom' has a static field 'badToken'. Attributes of static fields in safe assemblies must be marked  readonly in Visual C#, ReadOnly in Visual Basic, or initonly in Visual C++ and intermediate language.
             *	(47,0): SQL72045: Script execution error.  The executed script:
             */
#if CLR
            var whereIndex = statementSql.IndexOf("WHERE", StringComparison.InvariantCultureIgnoreCase);
            if (whereIndex > 0)
            {
                var atIndex = statementSql.IndexOf("@", whereIndex, StringComparison.Ordinal);
                if (atIndex <= 0)
                {
                    yield return(new PlanIssueResult(this.StatementArgs.StatementId)
                    {
                        Result = PlanResult.PossibleNonparameterizedQuery, Category = PlanCategory.Warning
                    });
                }
            }
#else
            var isParameterized = SqlParser.IsParameterized(statementSql);
            if (!isParameterized)
            {
                yield return(new PlanIssueResult(this.StatementArgs.StatementId)
                {
                    Result = PlanResult.PossibleNonparameterizedQuery, Category = PlanCategory.Warning
                });
            }
#endif
        }