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diff --git a/vendor/github.com/mattermost/gorp/dialect.go b/vendor/github.com/mattermost/gorp/dialect.go
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+// Copyright 2012 James Cooper. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+// Package gorp provides a simple way to marshal Go structs to and from
+// SQL databases.  It uses the database/sql package, and should work with any
+// compliant database/sql driver.
+//
+// Source code and project home:
+// https://github.com/go-gorp/gorp
+
+package gorp
+
+import "reflect"
+
+// The Dialect interface encapsulates behaviors that differ across
+// SQL databases.  At present the Dialect is only used by CreateTables()
+// but this could change in the future
+type Dialect interface {
+
+	// dialect name
+	Name() string
+
+	// adds a suffix to any query, usually ";"
+	QuerySuffix() string
+
+	// ToSqlType returns the SQL column type to use when creating a
+	// table of the given Go Type.  maxsize can be used to switch based on
+	// size.  For example, in MySQL []byte could map to BLOB, MEDIUMBLOB,
+	// or LONGBLOB depending on the maxsize
+	ToSqlType(val reflect.Type, maxsize int, isAutoIncr bool) string
+
+	// string to append to primary key column definitions
+	AutoIncrStr() string
+
+	// string to bind autoincrement columns to. Empty string will
+	// remove reference to those columns in the INSERT statement.
+	AutoIncrBindValue() string
+
+	AutoIncrInsertSuffix(col *ColumnMap) string
+
+	// string to append to "create table" statement for vendor specific
+	// table attributes
+	CreateTableSuffix() string
+
+	// string to append to "create index" statement
+	CreateIndexSuffix() string
+
+	// string to append to "drop index" statement
+	DropIndexSuffix() string
+
+	// string to truncate tables
+	TruncateClause() string
+
+	// bind variable string to use when forming SQL statements
+	// in many dbs it is "?", but Postgres appears to use $1
+	//
+	// i is a zero based index of the bind variable in this statement
+	//
+	BindVar(i int) string
+
+	// Handles quoting of a field name to ensure that it doesn't raise any
+	// SQL parsing exceptions by using a reserved word as a field name.
+	QuoteField(field string) string
+
+	// Handles building up of a schema.database string that is compatible with
+	// the given dialect
+	//
+	// schema - The schema that <table> lives in
+	// table - The table name
+	QuotedTableForQuery(schema string, table string) string
+
+	// Existance clause for table creation / deletion
+	IfSchemaNotExists(command, schema string) string
+	IfTableExists(command, schema, table string) string
+	IfTableNotExists(command, schema, table string) string
+}
+
+// IntegerAutoIncrInserter is implemented by dialects that can perform
+// inserts with automatically incremented integer primary keys.  If
+// the dialect can handle automatic assignment of more than just
+// integers, see TargetedAutoIncrInserter.
+type IntegerAutoIncrInserter interface {
+	InsertAutoIncr(exec SqlExecutor, insertSql string, params ...interface{}) (int64, error)
+}
+
+// TargetedAutoIncrInserter is implemented by dialects that can
+// perform automatic assignment of any primary key type (i.e. strings
+// for uuids, integers for serials, etc).
+type TargetedAutoIncrInserter interface {
+	// InsertAutoIncrToTarget runs an insert operation and assigns the
+	// automatically generated primary key directly to the passed in
+	// target.  The target should be a pointer to the primary key
+	// field of the value being inserted.
+	InsertAutoIncrToTarget(exec SqlExecutor, insertSql string, target interface{}, params ...interface{}) error
+}
+
+// TargetQueryInserter is implemented by dialects that can perform
+// assignment of integer primary key type by executing a query
+// like "select sequence.currval from dual".
+type TargetQueryInserter interface {
+	// TargetQueryInserter runs an insert operation and assigns the
+	// automatically generated primary key retrived by the query
+	// extracted from the GeneratedIdQuery field of the id column.
+	InsertQueryToTarget(exec SqlExecutor, insertSql, idSql string, target interface{}, params ...interface{}) error
+}
+
+func standardInsertAutoIncr(exec SqlExecutor, insertSql string, params ...interface{}) (int64, error) {
+	res, err := exec.Exec(insertSql, params...)
+	if err != nil {
+		return 0, err
+	}
+	return res.LastInsertId()
+}