Fix error in sql command and handled Pgsql indexed column drop

Author: alex-kulakov

Orm/Xtensive.Orm.Tests.Sql/PostgreSql/ExtractorTest.cs

@@ -101,7 +101,7 @@ protected override string GetIndexExtractionPrepareScript(string tableName)
           $"CREATE TABLE \"{tableName}\" (\"column1\" int, \"column2\" int);" +
           $"\n CREATE INDEX \"{tableName}_index1_desc_asc\" on \"{tableName}\" (\"column1\" desc, \"column2\" asc);" +
           $"\n CREATE UNIQUE INDEX \"{tableName}_index1_u_asc_desc\" on \"{tableName}\" (\"column1\" asc, \"column2\" desc);" +
-          $"\n CREATE UNIQUE INDEX \"{tableName}_index_with_included_columns\" on \"{tableName}\" (\"column1\" asc) include \"column2\");";
+          $"\n CREATE UNIQUE INDEX \"{tableName}_index_with_included_columns\" on \"{tableName}\" (\"column1\" asc) include (\"column2\");";
       }
       else {
         return

Orm/Xtensive.Orm.Tests/Storage/IgnoreRulesValidateTest.cs

@@ -344,6 +344,7 @@ public class IgnoreRulesValidateTest
 
     private readonly bool createConstraintsWithTable = StorageProviderInfo.Instance.Provider == StorageProvider.Sqlite;
     private readonly bool noExceptionOnIndexKeyColumnDrop = StorageProviderInfo.Instance.Provider.In(StorageProvider.PostgreSql, StorageProvider.MySql);
+    private readonly bool noExceptionOnIndexIncludedColumnDrop = StorageProviderInfo.Instance.Provider.In(StorageProvider.PostgreSql);
     private readonly SqlDriver sqlDriver = TestSqlDriver.Create(GetConnectionInfo());
 
     private Key changedOrderKey;
@@ -646,8 +647,13 @@ public void DropIncludedColumnOfIgnoredIndexTest()
       var ignoreRuleCollection = new IgnoreRuleCollection();
       _ = ignoreRuleCollection.IgnoreIndex("IX_Ignored_Index").WhenTable("MyEntity2");
 
-      _ = Assert.Throws<StorageException>(
-        () => BuildDomain(DomainUpgradeMode.Perform, ignoreRuleCollection, model5Types).Dispose());
+      if (noExceptionOnIndexIncludedColumnDrop) {
+        BuildDomain(DomainUpgradeMode.Perform, ignoreRuleCollection, model6Types).Dispose();
+      }
+      else {
+        _ = Assert.Throws<StorageException>(
+          () => BuildDomain(DomainUpgradeMode.Perform, ignoreRuleCollection, model5Types).Dispose());
+      }
     }
 
     [Test]