Add support for JSON column type (#4)

Author: lafriks

go.mod

@@ -3,8 +3,8 @@ module github.com/go-rel/postgres
 go 1.17
 
 require (
-	github.com/go-rel/rel v0.25.1-0.20211011102656-a1b38f01d34a
-	github.com/go-rel/sql v0.1.1-0.20211011073646-a38034248e90
+	github.com/go-rel/rel v0.25.1-0.20211012061337-dfb3d0951876
+	github.com/go-rel/sql v0.1.1-0.20211012072023-36066d80a50a
 	github.com/lib/pq v1.10.3
 	github.com/stretchr/testify v1.7.0
 )

go.sum

@@ -4,11 +4,10 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
-github.com/go-rel/rel v0.25.1-0.20211007095335-eec7ac68c920/go.mod h1:/VBLj1U4ZVb53aB3n22RQwX0V9DvckohseDJQibn2Rs=
-github.com/go-rel/rel v0.25.1-0.20211011102656-a1b38f01d34a h1:FAd8FrXgy+G/44OwXYOk3A0b4lhdoyKMgF9m3h6pTt4=
-github.com/go-rel/rel v0.25.1-0.20211011102656-a1b38f01d34a/go.mod h1:/VBLj1U4ZVb53aB3n22RQwX0V9DvckohseDJQibn2Rs=
-github.com/go-rel/sql v0.1.1-0.20211011073646-a38034248e90 h1:638QwWIymw8cizASdq594qlDM729vYEtJobdy8wv2Lo=
-github.com/go-rel/sql v0.1.1-0.20211011073646-a38034248e90/go.mod h1:ukXvTr/zbEZLu+lJCXcKpMg1Vp7Ps9cfKD+Us4kJREo=
+github.com/go-rel/rel v0.25.1-0.20211012061337-dfb3d0951876 h1:NAVlxoe5yAmCXKqgwBW2eUuc44zqJaY42v7ldSqxzf8=
+github.com/go-rel/rel v0.25.1-0.20211012061337-dfb3d0951876/go.mod h1:/VBLj1U4ZVb53aB3n22RQwX0V9DvckohseDJQibn2Rs=
+github.com/go-rel/sql v0.1.1-0.20211012072023-36066d80a50a h1:hyaIbbU0uuitQ6oAH6KHjRaxTUsjUDqVEe32qeGP6aw=
+github.com/go-rel/sql v0.1.1-0.20211012072023-36066d80a50a/go.mod h1:M6VxbYbMCeRR50h70wIL6zCw1Ui5x+6plAHyuhnrCLg=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=

postgres.go

@@ -168,6 +168,8 @@ func columnMapper(column *rel.Column) (string, int, int) {
 	case rel.Int, rel.BigInt, rel.Text:
 		column.Limit = 0
 		typ, m, n = sql.ColumnMapper(column)
+	case rel.JSON:
+		typ = "JSONB"
 	default:
 		typ, m, n = sql.ColumnMapper(column)
 	}