Support for MERGE statement (DNET-815)

Author: cincuranet

Provider/src/FirebirdSql.Data.FirebirdClient.Tests/FbScriptTests.cs

@@ -267,6 +267,17 @@ public void RecreatePackageBody()
 			Assert.AreEqual(SqlStatementType.RecreatePackageBody, script.Results[0].StatementType);
 		}
 
+		[Test]
+		public void Merge()
+		{
+			const string text =
+@"merge into table t using foo f on f.id = t.id when ";
+			FbScript script = new FbScript(text);
+			script.Parse();
+			Assert.AreEqual(1, script.Results.Count());
+			Assert.AreEqual(SqlStatementType.Merge, script.Results[0].StatementType);
+		}
+
 		#endregion
 	}
 }

Provider/src/FirebirdSql.Data.FirebirdClient/Isql/FbBatchExecution.cs

@@ -178,6 +178,7 @@ public void Execute(bool autoCommit = true)
 						case SqlStatementType.Grant:
 						case SqlStatementType.Insert:
 						case SqlStatementType.InsertCursor:
+						case SqlStatementType.Merge:
 						case SqlStatementType.Open:
 						case SqlStatementType.Prepare:
 						case SqlStatementType.Revoke:

Provider/src/FirebirdSql.Data.FirebirdClient/Isql/FbScript.cs

@@ -238,7 +238,6 @@ static bool IsSetTermStatement(string statement, out string newTerm)
 					{
 						return SqlStatementType.CreateIndex;
 					}
-					// this needs to be before CREATE PACKAGE to properly match
 					if (sqlStatement.StartsWith("CREATE PACKAGE BODY", StringComparison.OrdinalIgnoreCase))
 					{
 						return SqlStatementType.CreatePackageBody;
@@ -450,6 +449,14 @@ static bool IsSetTermStatement(string statement, out string newTerm)
 					}
 					break;
 
+				case 'M':
+				case 'm':
+					if (sqlStatement.StartsWith("MERGE", StringComparison.OrdinalIgnoreCase))
+					{
+						return SqlStatementType.Merge;
+					}
+					break;
+
 				case 'O':
 				case 'o':
 					if (sqlStatement.StartsWith("OPEN", StringComparison.OrdinalIgnoreCase))
@@ -476,7 +483,6 @@ static bool IsSetTermStatement(string statement, out string newTerm)
 					{
 						return SqlStatementType.RecreateFunction;
 					}
-					// this needs to be before RECREATE PACKAGE to properly match
 					if (sqlStatement.StartsWith("RECREATE PACKAGE BODY", StringComparison.OrdinalIgnoreCase))
 					{
 						return SqlStatementType.RecreatePackageBody;

Provider/src/FirebirdSql.Data.FirebirdClient/Isql/SqlStatementType.cs

@@ -90,6 +90,7 @@ public enum SqlStatementType
 		Grant,
 		Insert,
 		InsertCursor,
+		Merge,
 		Open,
 		Prepare,
 		RecreateFunction,