From 4969fc9cb52529ecbb0e1d4ff5dfec5494f9ffdd Mon Sep 17 00:00:00 2001
From: Jinzhu <wosmvp@gmail.com>
Date: Sun, 16 Mar 2014 07:50:57 +0800
Subject: [PATCH] Remove unused Scanner type from dialect

---
 dialect/mysql.go    | 9 ++++-----
 dialect/postgres.go | 9 ++++-----
 dialect/sqlite3.go  | 9 ++++-----
 3 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/dialect/mysql.go b/dialect/mysql.go
index a1c0a26e..2a5ac0c0 100644
--- a/dialect/mysql.go
+++ b/dialect/mysql.go
@@ -1,7 +1,6 @@
 package dialect
 
 import (
-	"database/sql"
 	"fmt"
 	"time"
 )
@@ -20,13 +19,13 @@ func (d *mysql) SqlTag(column interface{}, size int) string {
 	switch column.(type) {
 	case time.Time:
 		return "datetime"
-	case bool, sql.NullBool:
+	case bool:
 		return "boolean"
 	case int, int8, int16, int32, uint, uint8, uint16, uint32:
 		return "int"
-	case int64, uint64, sql.NullInt64:
+	case int64, uint64:
 		return "bigint"
-	case float32, float64, sql.NullFloat64:
+	case float32, float64:
 		return "double"
 	case []byte:
 		if size > 0 && size < 65532 {
@@ -34,7 +33,7 @@ func (d *mysql) SqlTag(column interface{}, size int) string {
 		} else {
 			return "longblob"
 		}
-	case string, sql.NullString:
+	case string:
 		if size > 0 && size < 65532 {
 			return fmt.Sprintf("varchar(%d)", size)
 		} else {
diff --git a/dialect/postgres.go b/dialect/postgres.go
index c0981cd0..7cffe9dc 100644
--- a/dialect/postgres.go
+++ b/dialect/postgres.go
@@ -1,7 +1,6 @@
 package dialect
 
 import (
-	"database/sql"
 	"fmt"
 	"time"
 )
@@ -21,17 +20,17 @@ func (d *postgres) SqlTag(column interface{}, size int) string {
 	switch column.(type) {
 	case time.Time:
 		return "timestamp with time zone"
-	case bool, sql.NullBool:
+	case bool:
 		return "boolean"
 	case int, int8, int16, int32, uint, uint8, uint16, uint32:
 		return "integer"
-	case int64, uint64, sql.NullInt64:
+	case int64, uint64:
 		return "bigint"
-	case float32, float64, sql.NullFloat64:
+	case float32, float64:
 		return "numeric"
 	case []byte:
 		return "bytea"
-	case string, sql.NullString:
+	case string:
 		if size > 0 && size < 65532 {
 			return fmt.Sprintf("varchar(%d)", size)
 		} else {
diff --git a/dialect/sqlite3.go b/dialect/sqlite3.go
index 92063786..4d16c3a8 100644
--- a/dialect/sqlite3.go
+++ b/dialect/sqlite3.go
@@ -1,7 +1,6 @@
 package dialect
 
 import (
-	"database/sql"
 	"fmt"
 	"time"
 )
@@ -20,17 +19,17 @@ func (s *sqlite3) SqlTag(column interface{}, size int) string {
 	switch column.(type) {
 	case time.Time:
 		return "datetime"
-	case bool, sql.NullBool:
+	case bool:
 		return "bool"
 	case int, int8, int16, int32, uint, uint8, uint16, uint32:
 		return "integer"
-	case int64, uint64, sql.NullInt64:
+	case int64, uint64:
 		return "bigint"
-	case float32, float64, sql.NullFloat64:
+	case float32, float64:
 		return "real"
 	case []byte:
 		return "blob"
-	case string, sql.NullString:
+	case string:
 		if size > 0 && size < 65532 {
 			return fmt.Sprintf("varchar(%d)", size)
 		} else {