Merge pull request #732 from kuba--/vitess-v.1.7.0

Upgrade vitess to v1.7.0

Author: ajnavarro

engine_test.go

@@ -1226,6 +1226,10 @@ var queries = []struct {
 		`SELECT NOW() - (NOW() - INTERVAL 1 SECOND)`,
 		[]sql.Row{{int64(1)}},
 	},
+	{
+		`SELECT SUBSTR(SUBSTRING('0123456789ABCDEF', 1, 10), -4)`,
+		[]sql.Row{{"6789"}},
+	},
 }
 
 func TestQueries(t *testing.T) {

go.mod

@@ -22,6 +22,6 @@ require (
 	golang.org/x/net v0.0.0-20190227022144-312bce6e941f // indirect
 	google.golang.org/grpc v1.19.0 // indirect
 	gopkg.in/src-d/go-errors.v1 v1.0.0
-	gopkg.in/src-d/go-vitess.v1 v1.6.0
+	gopkg.in/src-d/go-vitess.v1 v1.7.0
 	gopkg.in/yaml.v2 v2.2.2
 )

go.sum

@@ -162,6 +162,8 @@ gopkg.in/src-d/go-errors.v1 v1.0.0 h1:cooGdZnCjYbeS1zb1s6pVAAimTdKceRrpn7aKOnNIf
 gopkg.in/src-d/go-errors.v1 v1.0.0/go.mod h1:q1cBlomlw2FnDBDNGlnh6X0jPihy+QxZfMMNxPCbdYg=
 gopkg.in/src-d/go-vitess.v1 v1.6.0 h1:jIe2MXLIewejW6sebf7IPnSzwt4fPQIj53nPuzg/xD8=
 gopkg.in/src-d/go-vitess.v1 v1.6.0/go.mod h1:+g/wDtovsUgE2ioi32fo5Vavrtvfd/N1AvnknTmTvZE=
+gopkg.in/src-d/go-vitess.v1 v1.7.0 h1:7hYhf5sesJDLxl8//V/q6IyQJ4mOktLmkkfosMM9d00=
+gopkg.in/src-d/go-vitess.v1 v1.7.0/go.mod h1:+g/wDtovsUgE2ioi32fo5Vavrtvfd/N1AvnknTmTvZE=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=