Add db-connect, a SQL over HTTPS server

vendor/github.com/kshvakov/clickhouse/lib/column/uint64.go

@@ -0,0 +1,44 @@
+package column
+
+import (
+	"github.com/kshvakov/clickhouse/lib/binary"
+)
+
+type UInt64 struct{ base }
+
+func (UInt64) Read(decoder *binary.Decoder) (interface{}, error) {
+	v, err := decoder.UInt64()
+	if err != nil {
+		return uint64(0), err
+	}
+	return v, nil
+}
+
+func (u *UInt64) Write(encoder *binary.Encoder, v interface{}) error {
+	switch v := v.(type) {
+	case []byte:
+		if _, err := encoder.Write(v); err != nil {
+			return err
+		}
+		return nil
+	case uint64:
+		return encoder.UInt64(v)
+	case int64:
+		return encoder.UInt64(uint64(v))
+	case int:
+		return encoder.UInt64(uint64(v))
+
+	// this relies on Nullable never sending nil values through
+	case *uint64:
+		return encoder.UInt64(*v)
+	case *int64:
+		return encoder.UInt64(uint64(*v))
+	case *int:
+		return encoder.UInt64(uint64(*v))
+	}
+
+	return &ErrUnexpectedType{
+		T:      v,
+		Column: u,
+	}
+}