diff --git a/encoding/proto/proto.go b/encoding/proto/proto.go
index a10cd5a9e..384bcfe5a 100644
--- a/encoding/proto/proto.go
+++ b/encoding/proto/proto.go
@@ -1149,7 +1149,9 @@ func (s Serializer) decodeDecimal(d *pb.Decimal, m *pql.Decimal) {
 		// set the absolute value
 		val.SetBytes(d.ValAbs)
 		// convert to the correct sign
-		val.Mul(val, big.NewInt(d.ValSign))
+		if d.ValNeg {
+			val.Mul(val, big.NewInt(-1))
+		}
 		// set it on the retval
 		m.SetBigIntValue(val)
 	}
@@ -1978,7 +1980,7 @@ func (s Serializer) encodeDecimal(p *pql.Decimal) *pb.Decimal {
 	retval := &pb.Decimal{
 		Scale:      p.Scale,
 		ValAbs:     val.Bytes(),
-		ValSign:    int64(val.Sign()),
+		ValNeg:     val.Sign() < 0,
 		NewVersion: true,
 	}
 	return retval
diff --git a/pb/public.pb.go b/pb/public.pb.go
index e9fd3aa66..835a68c83 100644
--- a/pb/public.pb.go
+++ b/pb/public.pb.go
@@ -1247,7 +1247,7 @@ type Decimal struct {
 	Scale                int64    `protobuf:"varint,2,opt,name=Scale,proto3" json:"Scale,omitempty"`
 	NewVersion           bool     `protobuf:"varint,3,opt,name=NewVersion,proto3" json:"NewVersion,omitempty"`
 	ValAbs               []byte   `protobuf:"bytes,4,opt,name=ValAbs,proto3" json:"ValAbs,omitempty"`
-	ValSign              int64    `protobuf:"varint,5,opt,name=ValSign,proto3" json:"ValSign,omitempty"`
+	ValNeg               bool     `protobuf:"varint,5,opt,name=ValNeg,proto3" json:"ValNeg,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -1314,11 +1314,11 @@ func (m *Decimal) GetValAbs() []byte {
 	return nil
 }
 
-func (m *Decimal) GetValSign() int64 {
+func (m *Decimal) GetValNeg() bool {
 	if m != nil {
-		return m.ValSign
+		return m.ValNeg
 	}
-	return 0
+	return false
 }
 
 type DistinctTimestamp struct {
@@ -2681,13 +2681,13 @@ func init() {
 func init() { proto.RegisterFile("public.proto", fileDescriptor_413a91106d7bcce8) }
 
 var fileDescriptor_413a91106d7bcce8 = []byte{
-	// 1732 bytes of a gzipped FileDescriptorProto
+	// 1726 bytes of a gzipped FileDescriptorProto
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+	0xf3, 0x00, 0x08, 0x1e, 0x81, 0x1d, 0x4f, 0x83, 0x60, 0x07, 0x4b, 0x96, 0xe8, 0xb2, 0xe3, 0x29,
+	0xd0, 0x39, 0x55, 0xd5, 0x5d, 0xdd, 0xf6, 0x44, 0x51, 0x94, 0x5d, 0x9f, 0x9f, 0x3a, 0x75, 0xce,
 	0x57, 0xe7, 0xcf, 0x86, 0xce, 0x66, 0x7b, 0x17, 0x85, 0xf3, 0x67, 0x9b, 0x24, 0xce, 0x62, 0x66,
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@@ -2704,7 +2704,7 @@ var fileDescriptor_413a91106d7bcce8 = []byte{
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@@ -2726,71 +2726,70 @@ var fileDescriptor_413a91106d7bcce8 = []byte{
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+	0x0f, 0x0d, 0x2e, 0xd2, 0x6d, 0x94, 0xe9, 0xc6, 0xf1, 0x04, 0xdd, 0xd1, 0xa7, 0xb6, 0x51, 0xc6,
+	0xb5, 0xdc, 0xff, 0x5f, 0x0d, 0xda, 0x86, 0x20, 0x6f, 0x65, 0xd8, 0x8e, 0x8f, 0x65, 0x2b, 0xc3,
+	0x41, 0xcc, 0xe3, 0xdd, 0xde, 0x8c, 0xc6, 0xf2, 0xeb, 0x80, 0x75, 0xa3, 0x72, 0xdc, 0xba, 0x29,
+	0xaa, 0xdd, 0x39, 0x5c, 0xed, 0xb8, 0x97, 0x7c, 0x11, 0xac, 0x97, 0x62, 0x41, 0x8f, 0xde, 0xe4,
+	0x9a, 0x64, 0x83, 0xa2, 0x0c, 0x08, 0x5f, 0x55, 0x56, 0x9a, 0xc7, 0x8b, 0x22, 0x91, 0x45, 0x8c,
+	0xd3, 0xac, 0x21, 0xdf, 0x47, 0x52, 0xec, 0x43, 0xe8, 0x7e, 0x16, 0x2d, 0x8a, 0x32, 0x4d, 0xd5,
+	0x4b, 0x74, 0xd1, 0x4e, 0xc1, 0xe6, 0x15, 0x2d, 0xf6, 0x51, 0x75, 0x95, 0xa0, 0x37, 0x69, 0x0f,
+	0x99, 0x8a, 0xd3, 0x90, 0xf0, 0xea, 0xd2, 0x71, 0x61, 0x6c, 0x32, 0xf4, 0x50, 0xed, 0xe1, 0x31,
+	0x1e, 0xcb, 0x99, 0xdc, 0xd8, 0x74, 0x9e, 0x99, 0x8d, 0xd1, 0x6b, 0x93, 0x76, 0x57, 0x23, 0x24,
+	0xb9, 0xdc, 0x6c, 0x9d, 0x17, 0x46, 0x27, 0xf6, 0x3a, 0x85, 0xf1, 0x9c, 0xc9, 0x8d, 0x4e, 0x7d,
+	0x75, 0x60, 0xeb, 0xf0, 0x8e, 0xe9, 0x50, 0x75, 0xa5, 0x90, 0x42, 0x7e, 0x60, 0x4b, 0xf9, 0xa8,
+	0x3a, 0xb2, 0xbc, 0x6e, 0x01, 0x45, 0x59, 0xc2, 0xab, 0xc3, 0xed, 0xc2, 0x58, 0xff, 0xbc, 0x27,
+	0x85, 0xb7, 0x39, 0x93, 0x1b, 0xeb, 0xe1, 0x8f, 0xa1, 0x6d, 0x3e, 0xd4, 0x09, 0xa9, 0x3f, 0x29,
+	0x3f, 0x54, 0xca, 0x4d, 0x1d, 0x0c, 0x70, 0xaf, 0xfc, 0xbd, 0xd3, 0x22, 0xc0, 0x3d, 0x21, 0xdf,
+	0xd7, 0xf7, 0xff, 0x6e, 0xc3, 0xf1, 0x64, 0xb5, 0x89, 0x93, 0xcc, 0xe8, 0x01, 0x72, 0xc3, 0xb5,
+	0x0e, 0x6e, 0xb8, 0x76, 0x65, 0xa8, 0x50, 0x2f, 0xa0, 0x66, 0xe6, 0x72, 0x49, 0x18, 0xf9, 0xe8,
+	0x96, 0xf2, 0xf1, 0x1c, 0x5a, 0x72, 0x26, 0xa3, 0xa8, 0x46, 0xa2, 0x82, 0x21, 0x77, 0xee, 0x1d,
+	0xed, 0x5c, 0x0d, 0xea, 0x5c, 0x9a, 0xc4, 0xbe, 0x29, 0xd5, 0x48, 0xd8, 0x24, 0xa1, 0xc1, 0x41,
+	0x79, 0x1e, 0x50, 0xea, 0xd5, 0xfb, 0xce, 0xc0, 0xe1, 0x06, 0x87, 0xbd, 0x07, 0x5d, 0x0a, 0xe2,
+	0x2a, 0x11, 0xd8, 0x4c, 0x2e, 0x33, 0xca, 0x67, 0x87, 0x57, 0xb8, 0xa8, 0x47, 0x61, 0x15, 0x7a,
+	0xb2, 0xd3, 0x54, 0xb8, 0x34, 0x82, 0x22, 0x11, 0x24, 0x94, 0xb1, 0x4d, 0x2e, 0x09, 0xff, 0xdf,
+	0x36, 0x30, 0x89, 0xa4, 0xdc, 0x9f, 0xbe, 0x35, 0x38, 0xbf, 0x1a, 0xb6, 0x32, 0x38, 0x8d, 0x3d,
+	0x70, 0x8a, 0x79, 0x20, 0x81, 0xd1, 0xf3, 0xa0, 0x0f, 0x6d, 0x3d, 0x21, 0x51, 0x88, 0xa8, 0x5a,
+	0xdc, 0x64, 0xe1, 0x28, 0x9c, 0x66, 0xf8, 0xa3, 0x47, 0xa9, 0xb4, 0xc8, 0x76, 0x89, 0x77, 0x00,
+	0x5a, 0xf8, 0x9a, 0xd0, 0xb6, 0xbf, 0x1a, 0xda, 0x8e, 0x09, 0xed, 0x9f, 0x2c, 0xe8, 0x5c, 0x66,
+	0xf1, 0x2a, 0x9c, 0x73, 0x31, 0x8f, 0x93, 0xc5, 0xe3, 0xa0, 0x4a, 0xf8, 0x6c, 0x13, 0xbe, 0x01,
+	0x38, 0x93, 0x2f, 0x13, 0xd5, 0x7f, 0xdf, 0xa2, 0x45, 0x66, 0xef, 0x95, 0x38, 0xaa, 0xb0, 0x77,
+	0xc1, 0x9e, 0x24, 0x94, 0xb3, 0xed, 0xe1, 0x69, 0xa1, 0xa8, 0x75, 0xec, 0x49, 0xe2, 0xff, 0x08,
+	0xce, 0xa4, 0x23, 0x5a, 0xa4, 0x06, 0xce, 0x19, 0xd4, 0xae, 0x93, 0x24, 0xd6, 0x23, 0x47, 0x12,
+	0xb8, 0xa9, 0xe7, 0x33, 0x0c, 0x1f, 0xe3, 0x9b, 0xe4, 0xc4, 0xa1, 0x9f, 0xa7, 0x7d, 0x68, 0xdf,
+	0xc4, 0xd9, 0x6f, 0x92, 0x30, 0xa3, 0x96, 0x24, 0x07, 0x87, 0xc9, 0xf2, 0xdf, 0x87, 0x37, 0x2b,
+	0x37, 0x17, 0x93, 0x11, 0xd3, 0xc8, 0x29, 0x7e, 0xe2, 0x4d, 0xe1, 0x8d, 0x5c, 0x75, 0x32, 0xfe,
+	0x46, 0x3e, 0xee, 0x1b, 0xfd, 0xa1, 0x11, 0x39, 0x19, 0x55, 0xd7, 0x1f, 0x88, 0xc6, 0x1f, 0x81,
+	0xa7, 0xd0, 0x94, 0xbf, 0xb1, 0x95, 0x07, 0xb3, 0x50, 0xec, 0x1e, 0xfb, 0x69, 0x41, 0x6b, 0x85,
+	0x4d, 0x4b, 0x12, 0x7d, 0xfb, 0x7f, 0xb6, 0xe1, 0xec, 0x90, 0x91, 0x22, 0xa1, 0x2c, 0x23, 0xa1,
+	0xd8, 0x10, 0x6a, 0x5f, 0x86, 0x62, 0xa7, 0x77, 0x81, 0x73, 0xe3, 0xb1, 0xf7, 0x7c, 0xe0, 0x52,
+	0x15, 0x0b, 0xe9, 0x72, 0x9e, 0xe9, 0xcd, 0xad, 0xc5, 0x15, 0x85, 0x37, 0x8c, 0xa2, 0x78, 0xfe,
+	0x7b, 0xf9, 0x2b, 0x8f, 0x4b, 0xe2, 0x40, 0x61, 0xd4, 0xbe, 0x66, 0x61, 0xd4, 0x0f, 0x16, 0xc6,
+	0x00, 0x9e, 0xfc, 0x7a, 0xb3, 0x08, 0x32, 0x71, 0x7d, 0x1f, 0xa6, 0x99, 0x58, 0xcf, 0x85, 0xd7,
+	0xa0, 0x88, 0xaa, 0x6c, 0xdc, 0x4e, 0x8f, 0x55, 0x14, 0x52, 0xf4, 0xc8, 0x0f, 0x02, 0x06, 0x2e,
+	0x86, 0xa7, 0x17, 0x42, 0x82, 0x3b, 0x47, 0xcb, 0x21, 0x6c, 0x15, 0x5a, 0x27, 0xe0, 0x4c, 0x45,
+	0xa6, 0x96, 0x52, 0xfc, 0xc4, 0xd6, 0x40, 0x22, 0x59, 0x8e, 0xa9, 0xda, 0xff, 0x4a, 0x3c, 0xff,
+	0x73, 0x78, 0xbb, 0x04, 0x29, 0x55, 0xa3, 0x7e, 0x96, 0x62, 0x75, 0xb4, 0x4a, 0xab, 0xe3, 0x0f,
+	0xa0, 0x36, 0x33, 0x1e, 0xe6, 0x54, 0xce, 0x4b, 0x23, 0x18, 0x2e, 0xe5, 0xfe, 0xb4, 0x34, 0x2f,
+	0xb1, 0x47, 0x5e, 0x2e, 0x97, 0x89, 0x58, 0x06, 0x99, 0x4e, 0x96, 0x82, 0xc1, 0xde, 0x83, 0x3a,
+	0x29, 0x6b, 0xb3, 0xd5, 0x05, 0x48, 0x49, 0x47, 0x27, 0xff, 0x78, 0xdd, 0xb3, 0xfe, 0xf5, 0xba,
+	0x67, 0xfd, 0xe7, 0x75, 0xcf, 0xfa, 0xcb, 0x7f, 0x7b, 0x47, 0x77, 0x75, 0xfa, 0x23, 0xe9, 0x27,
+	0xff, 0x0f, 0x00, 0x00, 0xff, 0xff, 0x42, 0x09, 0xf4, 0x7d, 0x58, 0x12, 0x00, 0x00,
 }
 
 func (m *Row) Marshal() (dAtA []byte, err error) {
@@ -3861,8 +3860,13 @@ func (m *Decimal) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	if m.ValSign != 0 {
-		i = encodeVarintPublic(dAtA, i, uint64(m.ValSign))
+	if m.ValNeg {
+		i--
+		if m.ValNeg {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
 		i--
 		dAtA[i] = 0x28
 	}
@@ -5697,8 +5701,8 @@ func (m *Decimal) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovPublic(uint64(l))
 	}
-	if m.ValSign != 0 {
-		n += 1 + sovPublic(uint64(m.ValSign))
+	if m.ValNeg {
+		n += 2
 	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
@@ -8926,9 +8930,9 @@ func (m *Decimal) Unmarshal(dAtA []byte) error {
 			iNdEx = postIndex
 		case 5:
 			if wireType != 0 {
-				return fmt.Errorf("proto: wrong wireType = %d for field ValSign", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field ValNeg", wireType)
 			}
-			m.ValSign = 0
+			var v int
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowPublic
@@ -8938,11 +8942,12 @@ func (m *Decimal) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.ValSign |= int64(b&0x7F) << shift
+				v |= int(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
+			m.ValNeg = bool(v != 0)
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPublic(dAtA[iNdEx:])
diff --git a/pb/public.proto b/pb/public.proto
index 9a4be75b6..5f44ad807 100644
--- a/pb/public.proto
+++ b/pb/public.proto
@@ -117,7 +117,7 @@ message Decimal {
     int64 Scale = 2;
     bool NewVersion = 3;
     bytes ValAbs = 4;
-    int64 ValSign = 5;
+    bool ValNeg = 5;
 }
 
 message DistinctTimestamp {