Another attempt at #3187

Author: dmoagx

Models/SPUserManager.xcdatamodel/contents

@@ -9,6 +9,7 @@
         <attribute name="create_view_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="db" attributeType="String" maxValueString="64" indexed="YES" syncable="YES"/>
         <attribute name="delete_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
+        <attribute name="delete_versioning_rows_priv" optional="YES" attributeType="Boolean" syncable="YES"/>
         <attribute name="drop_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="event_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="execute_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
@@ -21,7 +22,6 @@
         <attribute name="show_view_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="trigger_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="update_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
-        <attribute name="delete_history_priv" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="userManager" optional="YES" transient="YES" syncable="YES"/>
         <relationship name="user" optional="YES" minCount="1" maxCount="1" deletionRule="Nullify" destinationEntity="SPUser" inverseName="schema_privileges" inverseEntity="SPUser" indexed="YES" syncable="YES"/>
     </entity>
@@ -36,6 +36,7 @@
         <attribute name="create_user_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="create_view_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="delete_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
+        <attribute name="delete_versioning_rows_priv" optional="YES" attributeType="Boolean" syncable="YES"/>
         <attribute name="drop_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="event_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="execute_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
@@ -69,7 +70,6 @@
         <attribute name="super_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="trigger_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
         <attribute name="update_priv" optional="YES" attributeType="Boolean" defaultValueString="NO" syncable="YES"/>
-        <attribute name="delete_history_priv" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="user" optional="YES" attributeType="String" syncable="YES"/>
         <attribute name="userManager" optional="YES" transient="YES" syncable="YES"/>
         <relationship name="children" optional="YES" toMany="YES" minCount="1" deletionRule="Cascade" destinationEntity="SPUser" inverseName="parent" inverseEntity="SPUser" indexed="YES" syncable="YES"/>

Source/SPUserManager.m

@@ -101,12 +101,17 @@ - (id)init
 		// is derived automatically.  While most keys can be automatically converted without
 		// any difficulty, some keys differ slightly in mysql column storage to GRANT syntax;
 		// this dictionary provides mappings for those values to ensure consistency.
+		
+		// key is:   The name of the actual column in the mysql.users / mysql.db table
+		// value is: The "Privilege" value from "SHOW PRIVILEGES" with " " replaced by "_" and "_priv" appended
 		privColumnToGrantMap = [@{
-			@"Grant_priv":            @"Grant_option_priv",
-			@"Show_db_priv":          @"Show_databases_priv",
-			@"Create_tmp_table_priv": @"Create_temporary_tables_priv",
-			@"Repl_slave_priv":       @"Replication_slave_priv",
-			@"Repl_client_priv":      @"Replication_client_priv",
+			@"Grant_priv":               @"Grant_option_priv",
+			@"Show_db_priv":             @"Show_databases_priv",
+			@"Create_tmp_table_priv":    @"Create_temporary_tables_priv",
+			@"Repl_slave_priv":          @"Replication_slave_priv",
+			@"Repl_client_priv":         @"Replication_client_priv",
+			@"Truncate_versioning_priv": @"Delete_versioning_rows_priv", // MariaDB only, 10.3.4 only
+			@"Delete_history_priv":      @"Delete_versioning_rows_priv", // MariaDB only, since 10.3.5
 		} retain];
 
 		schemas = [[NSMutableArray alloc] init];