fix bug.

Classes/FMDTContext.m

@@ -114,7 +114,7 @@ - (NSString *)getAlterTableSql:(FMDTSchemaTable *)ldts dbts:(NSString *)dbts
     NSString * findStr = [dbts substringWithRange:NSMakeRange(s.location, e.location - s.location)];
     for (FMDTSchemaField *entry in ldts.fields) {
 //        if (![findStr containsString:entry.name]) {
-        if ([findStr rangeOfString:entry.name].length == 0) {
+        if ([findStr rangeOfString:[NSString stringWithFormat:@"`%@`", entry.name]].length == 0) {
             [text appendFormat:@"alter table [%@] add column [%@] %@;", ldts.tableName, entry.name, entry.type];
         }
     }

FMDBDataTable.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "FMDBDataTable"
-  s.version      = "2.2.1"
+  s.version      = "2.2.2"
   s.summary      = "基于FMDB的一个ORM解决方案"
 
   s.description  = <<-DESC
@@ -78,7 +78,7 @@ Pod::Spec.new do |s|
   #  Supports git, hg, bzr, svn and HTTP.
   #
 
-  s.source       = { :git => "https://github.com/bing6/FMDBDataTable.git", :tag => "2.2.1" }
+  s.source       = { :git => "https://github.com/bing6/FMDBDataTable.git", :tag => "2.2.2" }
 
 
   # ――― Source Code ―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――― #

FMDataTable/Info.plist

@@ -15,11 +15,11 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.2.1</string>
+	<string>2.2.2</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>2.2.1</string>
+	<string>2.2.2</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
 	<key>UILaunchStoryboardName</key>