Extract more error information

conn.go

@@ -676,6 +676,20 @@ func (c *Conn) rxErrorResponse(r *msgReader) (err PgError) {
 			err.Code = r.readCString()
 		case 'M':
 			err.Message = r.readCString()
+		case 'D':
+			err.Detail = r.readCString()
+		case 'H':
+			err.Hint = r.readCString()
+		case 's':
+			err.SchemaName = r.readCString()
+		case 't':
+			err.TableName = r.readCString()
+		case 'c':
+			err.ColumnName = r.readCString()
+		case 'd':
+			err.DataTypeName = r.readCString()
+		case 'n':
+			err.ConstraintName = r.readCString()
 		case 0: // End of error message
 			if err.Severity == "FATAL" {
 				c.die(err)

messages.go

@@ -60,10 +60,20 @@ type FieldDescription struct {
 	FormatCode      int16
 }
 
+// PgError represents an error reported by the PostgreSQL server. See
+// http://www.postgresql.org/docs/9.3/static/protocol-error-fields.html for
+// detailed field description.
 type PgError struct {
-	Severity string
-	Code     string
-	Message  string
+	Severity       string
+	Code           string
+	Message        string
+	Detail         string
+	Hint           string
+	SchemaName     string
+	TableName      string
+	ColumnName     string
+	DataTypeName   string
+	ConstraintName string
 }
 
 func (self PgError) Error() string {