Add SQL Types

sql_type.go

@@ -0,0 +1,61 @@
+package gorm
+
+import (
+	"fmt"
+	"time"
+)
+
+func getSqlType(adaptor string, column interface{}, size int) string {
+	switch adaptor {
+	case "mysql":
+		switch column.(type) {
+		case time.Time:
+			return "timestamp"
+		case bool:
+			return "boolean"
+		case int, int8, int16, int32, uint, uint8, uint16, uint32:
+			return "int"
+		case int64, uint64:
+			return "bigint"
+		case float32, float64:
+			return "double"
+		case []byte:
+			if size > 0 && size < 65532 {
+				return fmt.Sprintf("varbinary(%d)", size)
+			}
+			return "longblob"
+		case string:
+			if size > 0 && size < 65532 {
+				return fmt.Sprintf("varchar(%d)", size)
+			}
+			return "longtext"
+		default:
+			panic("invalid sql type")
+		}
+
+	case "postgres":
+		switch column.(type) {
+		case time.Time:
+			return "timestamp with time zone"
+		case bool:
+			return "boolean"
+		case int, int8, int16, int32, uint, uint8, uint16, uint32:
+			return "integer"
+		case int64, uint64:
+			return "bigint"
+		case float32, float64:
+			return "double precision"
+		case []byte:
+			return "bytea"
+		case string:
+			if size > 0 && size < 65532 {
+				return fmt.Sprintf("varchar(%d)", size)
+			}
+			return "text"
+		default:
+			panic("invalid sql type")
+		}
+	}
+
+	panic("unsupported sql adaptor, please submit an issue in github")
+}