fix mssql schema index test

lib/dialects/abstract/query-generator.js

@@ -479,10 +479,9 @@ module.exports = (function() {
       }
 
       options.prefix = options.prefix || rawTablename || tableName;
-
       if (options.prefix) {
         options.prefix = options.prefix.replace(/\./g, '_');
-        options.prefix = options.prefix.replace(/\"\'/g, '');
+        options.prefix = options.prefix.replace(/(\"|\')/g, '');
       }
 
       fieldsSql = options.fields.map(function(field) {

test/unit/sql/index.test.js

@@ -20,7 +20,10 @@ suite(Support.getTestDialectTeaser('SQL'), function() {
           default: 'CREATE INDEX [schema_table_column1_column2] ON [schema].[table] ([column1], [column2])'
         });
 
-        expectsql(sql.addIndexQuery('"schema"."table"', ['column1', 'column2'], {}), {
+        expectsql(sql.addIndexQuery(sql.quoteTable(sql.addSchema({
+          schema: 'schema',
+          tableName: 'table'
+        })), ['column1', 'column2'], {}), {
           default: 'CREATE INDEX [schema_table_column1_column2] ON [schema].[table] ([column1], [column2])'
         });
       }