For tables that named with schema(ex. rails.users), they could not get length of column of varchar(40) gets length => nil.

Author: metaskills

CHANGELOG

@@ -1,6 +1,9 @@
 
 MASTER
 
+* For tables that named with schema(ex. rails.users), they could not get length of column.
+  column of varchar(40) gets length => nil. Ticket #27 & #15 [Ken Tachiya]
+
 * Altered limited_update_conditions regex conditions, the .* would greedily fail 
   if the where_sql had WHERE in a table or field, etc. [Ransom Briggs]
 

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -1042,7 +1042,7 @@ def column_definitions(table_name)
           columns.NUMERIC_PRECISION as numeric_precision,
           CASE
             WHEN columns.DATA_TYPE IN ('nchar','nvarchar') THEN columns.CHARACTER_MAXIMUM_LENGTH
-            ELSE COL_LENGTH(columns.TABLE_NAME, columns.COLUMN_NAME) 
+            ELSE COL_LENGTH(columns.TABLE_SCHEMA+'.'+columns.TABLE_NAME, columns.COLUMN_NAME)
           END as length,
           CASE
             WHEN columns.IS_NULLABLE = 'YES' THEN 1