Add OrmLiteConfig.StripUpperInLike option for omitting upper(name) in Like searches

Author: mythz

src/ServiceStack.OrmLite/Expressions/SqlExpression.cs

@@ -1305,20 +1305,46 @@ protected virtual object VisitColumnAccessMethod(MethodCallExpression m)
                     statement = string.Format("lower({0})", quotedColName);
                     break;
                 case "StartsWith":
-                    statement = string.Format("upper({0}) like {1} escape '\\'",
-                        quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue(
-                            OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()).ToUpper() + "%"));
+                    if (!OrmLiteConfig.StripUpperInLike)
+                    {
+                        statement = string.Format("upper({0}) like {1} escape '\\'",
+                            quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue(
+                                OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()).ToUpper() + "%"));
+                    }
+                    else
+                    {
+                        statement = string.Format("{0} like {1} escape '\\'",
+                            quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue(
+                                OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()) + "%"));
+                    }
                     break;
                 case "EndsWith":
-                    statement = string.Format("upper({0}) like {1} escape '\\'",
-                        quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue("%" +
-                        OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()).ToUpper()));
+                    if (!OrmLiteConfig.StripUpperInLike)
+                    {
+                        statement = string.Format("upper({0}) like {1} escape '\\'",
+                            quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue("%" +
+                            OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()).ToUpper()));
+                    }
+                    else
+                    {
+                        statement = string.Format("{0} like {1} escape '\\'",
+                            quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue("%" +
+                            OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString())));
+                    }
                     break;
                 case "Contains":
-                    statement = string.Format("upper({0}) like {1} escape '\\'",
-                        quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue("%" +
-                            OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()).ToUpper() 
-                            + "%"));
+                    if (!OrmLiteConfig.StripUpperInLike)
+                    {
+                        statement = string.Format("upper({0}) like {1} escape '\\'",
+                            quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue("%" +
+                                OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()).ToUpper() + "%"));
+                    }
+                    else
+                    {
+                        statement = string.Format("{0} like {1} escape '\\'",
+                            quotedColName, OrmLiteConfig.DialectProvider.GetQuotedValue("%" +
+                                OrmLiteConfig.DialectProvider.EscapeWildcards(args[0].ToString()) + "%"));
+                    }
                     break;
                 case "Substring":
                     var startIndex = Int32.Parse(args[0].ToString()) + 1;

src/ServiceStack.OrmLite/OrmLiteConfig.cs

@@ -98,6 +98,8 @@ public static IDbConnection ToDbConnection(this string dbConnectionStringOrFileP
             return dbConn;
         }
 
+        public static bool StripUpperInLike { get; set; }
+
         public static IOrmLiteExecFilter ExecFilter = new OrmLiteExecFilter();
 
         public static Action<IDbCommand, object> InsertFilter { get; set; }

tests/ServiceStack.OrmLite.Tests/Expression/SelectExpressionTests.cs

@@ -167,6 +167,50 @@ public void Can_escape_wildcards()
                 Assert.That(db.Count<Poco>(q => q.Name.StartsWith(@"a\b")), Is.EqualTo(2));
             }
         }
+
+        [Test]
+        public void Can_perform_case_sensitive_likes()
+        {
+            using (var db = OpenDbConnection())
+            {
+                db.DropAndCreateTable<Poco>();
+
+                db.Insert(new Poco { Name = "Apple" });
+                db.Insert(new Poco { Name = "ABCDE" });
+                db.Insert(new Poco { Name = "abc" });
+
+                Func<string> normalizedSql = () =>
+                    db.GetLastSql().Replace("\"", "").Replace("`", "").Replace("Name", "name");
+
+                db.Count<Poco>(q => q.Name.StartsWith("A"));
+                Assert.That(normalizedSql(),
+                    Is.StringContaining("WHERE upper(name) like 'A%'"));
+
+                db.Count<Poco>(q => q.Name.EndsWith("e"));
+                Assert.That(normalizedSql(),
+                    Is.StringContaining("WHERE upper(name) like '%E'"));
+
+                db.Count<Poco>(q => q.Name.Contains("b"));
+                Assert.That(normalizedSql(),
+                    Is.StringContaining("WHERE upper(name) like '%B%'"));
+
+                OrmLiteConfig.StripUpperInLike = true;
+
+                db.Count<Poco>(q => q.Name.StartsWith("A"));
+                Assert.That(normalizedSql(),
+                    Is.StringContaining("WHERE name like 'A%'"));
+
+                db.Count<Poco>(q => q.Name.EndsWith("e"));
+                Assert.That(normalizedSql(),
+                    Is.StringContaining("WHERE name like '%e'"));
+
+                db.Count<Poco>(q => q.Name.Contains("b"));
+                Assert.That(normalizedSql(),
+                    Is.StringContaining("WHERE name like '%b%'"));
+
+                OrmLiteConfig.StripUpperInLike = false;
+            }
+        }
     }
 
     public class Submission