diff --git a/mssql_dialect.go b/mssql_dialect.go
index ebc35164..5cd2f52b 100644
--- a/mssql_dialect.go
+++ b/mssql_dialect.go
@@ -62,10 +62,10 @@ func (db *mssql) SqlType(c *core.Column) string {
 
 	var hasLen1 bool = (c.Length > 0)
 	var hasLen2 bool = (c.Length2 > 0)
-	if hasLen1 {
-		res += "(" + strconv.Itoa(c.Length) + ")"
-	} else if hasLen2 {
+	if hasLen2 {
 		res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
+	} else if hasLen1 {
+		res += "(" + strconv.Itoa(c.Length) + ")"
 	}
 	return res
 }
diff --git a/mysql_dialect.go b/mysql_dialect.go
index e76830ab..4e430165 100644
--- a/mysql_dialect.go
+++ b/mysql_dialect.go
@@ -70,10 +70,11 @@ func (db *mysql) SqlType(c *core.Column) string {
 
 	var hasLen1 bool = (c.Length > 0)
 	var hasLen2 bool = (c.Length2 > 0)
-	if hasLen1 {
-		res += "(" + strconv.Itoa(c.Length) + ")"
-	} else if hasLen2 {
+
+	if hasLen2 {
 		res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
+	} else if hasLen1 {
+		res += "(" + strconv.Itoa(c.Length) + ")"
 	}
 	return res
 }
diff --git a/oracle_dialect.go b/oracle_dialect.go
index 73300c1a..e23ab297 100644
--- a/oracle_dialect.go
+++ b/oracle_dialect.go
@@ -44,10 +44,10 @@ func (db *oracle) SqlType(c *core.Column) string {
 
 	var hasLen1 bool = (c.Length > 0)
 	var hasLen2 bool = (c.Length2 > 0)
-	if hasLen1 {
-		res += "(" + strconv.Itoa(c.Length) + ")"
-	} else if hasLen2 {
+	if hasLen2 {
 		res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
+	} else if hasLen1 {
+		res += "(" + strconv.Itoa(c.Length) + ")"
 	}
 	return res
 }
diff --git a/postgres_dialect.go b/postgres_dialect.go
index 58e8da4f..61e75881 100644
--- a/postgres_dialect.go
+++ b/postgres_dialect.go
@@ -59,10 +59,10 @@ func (db *postgres) SqlType(c *core.Column) string {
 
 	var hasLen1 bool = (c.Length > 0)
 	var hasLen2 bool = (c.Length2 > 0)
-	if hasLen1 {
-		res += "(" + strconv.Itoa(c.Length) + ")"
-	} else if hasLen2 {
+	if hasLen2 {
 		res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
+	} else if hasLen1 {
+		res += "(" + strconv.Itoa(c.Length) + ")"
 	}
 	return res
 }