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1 change: 1 addition & 0 deletions go/connection.go
Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,7 @@ func (c *trinoConnectionImpl) GetTableSchema(ctx context.Context, catalog *strin
Name: colType.Name(),
DatabaseTypeName: colType.DatabaseTypeName(),
Nullable: true, // Assume every column in always nullable since trino go client does not provide clean way to get nullability.
ScanType: colType.ScanType(),
}

// Add precision and scale if available
Expand Down
28 changes: 14 additions & 14 deletions go/go.mod
Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,10 @@ module github.com/adbc-drivers/trino
go 1.26.0

require (
github.com/adbc-drivers/driverbase-go/driverbase v0.0.0-20260608064711-7f3f9a9f3990
github.com/adbc-drivers/driverbase-go/sqlwrapper v0.0.0-20260608064711-7f3f9a9f3990
github.com/adbc-drivers/driverbase-go/testutil v0.0.0-20260423045143-148150eea03b
github.com/adbc-drivers/driverbase-go/validation v0.0.0-20260423045143-148150eea03b
github.com/adbc-drivers/driverbase-go/driverbase v0.0.0-20260621223149-c33f25554eb6
github.com/adbc-drivers/driverbase-go/sqlwrapper v0.0.0-20260621223149-c33f25554eb6
github.com/adbc-drivers/driverbase-go/testutil v0.0.0-20260621223149-c33f25554eb6
github.com/adbc-drivers/driverbase-go/validation v0.0.0-20260621223149-c33f25554eb6
github.com/apache/arrow-adbc/go/adbc v1.11.0
github.com/apache/arrow-go/v18 v18.6.0
github.com/google/uuid v1.6.0
Expand Down Expand Up @@ -62,16 +62,16 @@ require (
go.opentelemetry.io/otel/sdk v1.44.0 // indirect
go.opentelemetry.io/otel/trace v1.44.0 // indirect
go.opentelemetry.io/proto/otlp v1.10.0 // indirect
golang.org/x/crypto v0.52.0 // indirect
golang.org/x/exp v0.0.0-20260603202125-055de637280b // indirect
golang.org/x/mod v0.36.0 // indirect
golang.org/x/net v0.55.0 // indirect
golang.org/x/sync v0.20.0 // indirect
golang.org/x/sys v0.45.0 // indirect
golang.org/x/text v0.37.0 // indirect
golang.org/x/tools v0.45.0 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20260526163538-3dc84a4a5aaa // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20260526163538-3dc84a4a5aaa // indirect
golang.org/x/crypto v0.53.0 // indirect
golang.org/x/exp v0.0.0-20260611194520-c48552f49976 // indirect
golang.org/x/mod v0.37.0 // indirect
golang.org/x/net v0.56.0 // indirect
golang.org/x/sync v0.21.0 // indirect
golang.org/x/sys v0.46.0 // indirect
golang.org/x/text v0.38.0 // indirect
golang.org/x/tools v0.46.0 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20260610212136-7ab31c22f7ad // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20260610212136-7ab31c22f7ad // indirect
google.golang.org/grpc v1.81.1 // indirect
google.golang.org/protobuf v1.36.11 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
Expand Down
56 changes: 28 additions & 28 deletions go/go.sum
Original file line number Diff line number Diff line change
Expand Up @@ -6,14 +6,14 @@ github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERo
github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
github.com/adbc-drivers/driverbase-go/driverbase v0.0.0-20260608064711-7f3f9a9f3990 h1:b8vaQHcgHqmalpmIqqPF+bVWrMQISUUjxwFfRbT0uy0=
github.com/adbc-drivers/driverbase-go/driverbase v0.0.0-20260608064711-7f3f9a9f3990/go.mod h1:rCDugBvob6aEFZu7zJ9SqPSyyys6ipNWcsfvzF/Ns74=
github.com/adbc-drivers/driverbase-go/sqlwrapper v0.0.0-20260608064711-7f3f9a9f3990 h1:0Ar5GwlpNLPEjBHWrYOZSG91u8gC0xetdsh7REjgpDY=
github.com/adbc-drivers/driverbase-go/sqlwrapper v0.0.0-20260608064711-7f3f9a9f3990/go.mod h1:H5NH2RgPyzQjwJFA7wYNbJNdxQXQcBcpN3+xQkTgP2s=
github.com/adbc-drivers/driverbase-go/testutil v0.0.0-20260423045143-148150eea03b h1:lCFRgYUVoy3cFTnUoKi/px3ZiV2cmIHujy3OVEm93P4=
github.com/adbc-drivers/driverbase-go/testutil v0.0.0-20260423045143-148150eea03b/go.mod h1:uKkYVA+iUXij7mPFproEi6sOIWFVNOT87UcqucqqnBg=
github.com/adbc-drivers/driverbase-go/validation v0.0.0-20260423045143-148150eea03b h1:hvd/bQfV1cdkYN0wAgDZVNC9Bwuq4IGVHLpG5gFBWU8=
github.com/adbc-drivers/driverbase-go/validation v0.0.0-20260423045143-148150eea03b/go.mod h1:Tq+xMUZfJqVDBtdvzzn8BQoj6psg6INAngiAUZQhmTA=
github.com/adbc-drivers/driverbase-go/driverbase v0.0.0-20260621223149-c33f25554eb6 h1:LtT7Kjc2WXaIiyPWlZ5ov61XnZ43T8zuQRQpouFRCBg=
github.com/adbc-drivers/driverbase-go/driverbase v0.0.0-20260621223149-c33f25554eb6/go.mod h1:+joqyFG4VBZqgqEadi61N6SXh2vOMqL+1tYRZ7S0dkE=
github.com/adbc-drivers/driverbase-go/sqlwrapper v0.0.0-20260621223149-c33f25554eb6 h1:cQMpI1zMPPYmWXO3Nm5v/b1SEa5qp0CdJ2VQSx48rNY=
github.com/adbc-drivers/driverbase-go/sqlwrapper v0.0.0-20260621223149-c33f25554eb6/go.mod h1:ou6aROTDc+9XugShjcUfglZ8DJ51x90ajsCQiDA0gtU=
github.com/adbc-drivers/driverbase-go/testutil v0.0.0-20260621223149-c33f25554eb6 h1:PWRJDzEV1EHYxj6b5zcZ9NhRRo8XaHvC02fvx55I5Wk=
github.com/adbc-drivers/driverbase-go/testutil v0.0.0-20260621223149-c33f25554eb6/go.mod h1:cS1MYILY58NKS7jW3NayW6jKTU1Bj07DVqaTQIXWlpU=
github.com/adbc-drivers/driverbase-go/validation v0.0.0-20260621223149-c33f25554eb6 h1:j09ARboeMh3H/y728bp/U2s/NMhYeevMtqEDB63Ln+U=
github.com/adbc-drivers/driverbase-go/validation v0.0.0-20260621223149-c33f25554eb6/go.mod h1:o6zCLnWFieDz12zkjcIiPHtMAFfEdYlnqBB5bBT/gEk=
github.com/ahmetb/dlog v0.0.0-20170105205344-4fb5f8204f26 h1:3YVZUqkoev4mL+aCwVOSWV4M7pN+NURHL38Z2zq5JKA=
github.com/ahmetb/dlog v0.0.0-20170105205344-4fb5f8204f26/go.mod h1:ymXt5bw5uSNu4jveerFxE0vNYxF8ncqbptntMaFMg3k=
github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
Expand Down Expand Up @@ -214,54 +214,54 @@ go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.6.0/go.mod h1:OFC/31mSvZgRz0V1QTNCzfAI1aIRzbiufJtkMIlEp58=
golang.org/x/crypto v0.52.0 h1:RMs7fP2rXdep0CftQlK8Uf+kibLm7qkCcradZWYz988=
golang.org/x/crypto v0.52.0/go.mod h1:1QgfPxDqh0T2M/elOJtp9RvuR95kVjir0e6/BvEmGbc=
golang.org/x/exp v0.0.0-20260603202125-055de637280b h1:v1uXiEBHo8QA0LiGCo7UgHMzHT4Kdfpl2zmtH5vaP1Q=
golang.org/x/exp v0.0.0-20260603202125-055de637280b/go.mod h1:d2fgXJLVs4dYDHUk5lwMIfzRzSrWCfGZb0ZqeLa/Vcw=
golang.org/x/crypto v0.53.0 h1:QZ4Muo8THX6CizN2vPPd5fBGHyogrdK9fG4wLPFUsto=
golang.org/x/crypto v0.53.0/go.mod h1:DNLU434OwVakk9PzuwV8w62mAJpRJL3vsgcfp4Qnsio=
golang.org/x/exp v0.0.0-20260611194520-c48552f49976 h1:X8Hz2ImujgbmetVuW+w2YkyZChE3cBpZi2P158rTG9M=
golang.org/x/exp v0.0.0-20260611194520-c48552f49976/go.mod h1:vnf4pv9iKZXY58sQE1L86zmNWJ4159e1RkcWiLCkeEY=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.36.0 h1:JJjpVx6myfUsUdAzZuOSTTmRE0PfZeNWzzvKrP7amb4=
golang.org/x/mod v0.36.0/go.mod h1:moc6ELqsWcOw5Ef3xVprK5ul/MvtVvkIXLziUOICjUQ=
golang.org/x/mod v0.37.0 h1:vF1DjpVEshcIqoEaauuHebaLk1O1forxjxBaVn884JQ=
golang.org/x/mod v0.37.0/go.mod h1:m8S8VeM9r4dzDwjrKO0a1sZP3YjeMamRRlD+fmR2Q/0=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.55.0 h1:bcvxaJn3e1U6InsFWt1JUq1aSjnRxLzT2rtD2KfkDF8=
golang.org/x/net v0.55.0/go.mod h1:L5U2KuzuOe1lY7Z+aWVIKK6qEeJXnXV9yzGA+WCHJww=
golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.45.0 h1:dO4czNzziLiiXplLQgBCEpCvXQ3dnkn0SdaZSYdQ+FY=
golang.org/x/sys v0.45.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.37.0 h1:Cqjiwd9eSg8e0QAkyCaQTNHFIIzWtidPahFWR83rTrc=
golang.org/x/text v0.37.0/go.mod h1:a5sjxXGs9hsn/AJVwuElvCAo9v8QYLzvavO5z2PiM38=
golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=
golang.org/x/text v0.38.0/go.mod h1:YXZt3QhHUKYT53r2lLKFIVi6Ao1jdzrTR/KQ09qyxF4=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.45.0 h1:18qN3FAooORvApf5XjCXgsuayZOEtXf6JK18I3+ONa8=
golang.org/x/tools v0.45.0/go.mod h1:LuUGqqaXcXMEFEruIVJVm5mgDD8vww/z/SR1gQ4uE/0=
golang.org/x/tools v0.46.0 h1:7jTurBkPZu4moS/Uy4OQT1M+QBlsj3wejyZwsT8Z7rk=
golang.org/x/tools v0.46.0/go.mod h1:FrD85F8l+NWL+9XWBSyVSHO6Ne4jutsfIFba7AWQ5Ys=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gonum.org/v1/gonum v0.17.0 h1:VbpOemQlsSMrYmn7T2OUvQ4dqxQXU+ouZFQsZOx50z4=
gonum.org/v1/gonum v0.17.0/go.mod h1:El3tOrEuMpv2UdMrbNlKEh9vd86bmQ6vqIcDwxEOc1E=
google.golang.org/genproto/googleapis/api v0.0.0-20260526163538-3dc84a4a5aaa h1:Kjn0N0tCrDgiAFW+lGO4JZ3ck44CehvJQMAwj9QF0G8=
google.golang.org/genproto/googleapis/api v0.0.0-20260526163538-3dc84a4a5aaa/go.mod h1:q4lMZS6kskjT5HvCPrnnypcDPVJqT/f4nfxmkE7gryY=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260526163538-3dc84a4a5aaa h1:mZHHdPZl0dbGHCflZgAq/Q468DWVFcU2whhB2KAo8fk=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260526163538-3dc84a4a5aaa/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
google.golang.org/genproto/googleapis/api v0.0.0-20260610212136-7ab31c22f7ad h1:3iLyITS/sySRwbUKoC7ogfj2Yr1Cjs0pfaRKj5U5HEw=
google.golang.org/genproto/googleapis/api v0.0.0-20260610212136-7ab31c22f7ad/go.mod h1:KdNqO+rCIWgFumrNBSEDlDNrkrQnpkax7Tv1WxNY8V4=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260610212136-7ab31c22f7ad h1:45WmJvIV6C2+O/jjLkPUH+F3aOj/1miDoU2DD0+NWbg=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260610212136-7ab31c22f7ad/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
google.golang.org/grpc v1.81.1 h1:VnnIIZ88UzOOKLukQi+ImGz8O1Wdp8nAGGnvOfEIWQQ=
google.golang.org/grpc v1.81.1/go.mod h1:xGH9GfzOyMTGIOXBJmXt+BX/V0kcdQbdcuwQ/zNw42I=
google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
Expand Down
58 changes: 58 additions & 0 deletions go/trino.go
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ import (
"database/sql/driver"
"fmt"
"math/big"
"reflect"
"strconv"
"strings"
"time"
Expand Down Expand Up @@ -128,10 +129,36 @@ func (m *trinoTypeConverter) ConvertRawColumnType(colType sqlwrapper.ColumnType)
return extensions.NewUUIDType(), colType.Nullable, metadata, nil
}

if listType := scanTypeToListMap[colType.ScanType]; listType != nil {
metadata := arrow.MetadataFrom(map[string]string{
sqlwrapper.MetaKeyDatabaseTypeName: colType.DatabaseTypeName,
sqlwrapper.MetaKeyColumnName: colType.Name,
})
return listType, colType.Nullable, metadata, nil
}

// For all other types, fall back to default conversion
return m.DefaultTypeConverter.ConvertRawColumnType(colType)
}

var scanTypeToListMap = map[reflect.Type]arrow.DataType{
reflect.TypeFor[trino.NullSliceString](): arrow.ListOf(arrow.BinaryTypes.String),
reflect.TypeFor[trino.NullSliceInt64](): arrow.ListOf(arrow.PrimitiveTypes.Int64),
reflect.TypeFor[trino.NullSliceFloat64](): arrow.ListOf(arrow.PrimitiveTypes.Float64),
reflect.TypeFor[trino.NullSliceBool](): arrow.ListOf(arrow.FixedWidthTypes.Boolean),
reflect.TypeFor[trino.NullSliceTime](): arrow.ListOf(&arrow.TimestampType{Unit: arrow.Microsecond, TimeZone: "UTC"}),
reflect.TypeFor[trino.NullSlice2String](): arrow.ListOf(arrow.ListOf(arrow.BinaryTypes.String)),
reflect.TypeFor[trino.NullSlice2Int64](): arrow.ListOf(arrow.ListOf(arrow.PrimitiveTypes.Int64)),
reflect.TypeFor[trino.NullSlice2Float64](): arrow.ListOf(arrow.ListOf(arrow.PrimitiveTypes.Float64)),
reflect.TypeFor[trino.NullSlice2Bool](): arrow.ListOf(arrow.ListOf(arrow.FixedWidthTypes.Boolean)),
reflect.TypeFor[trino.NullSlice2Time](): arrow.ListOf(arrow.ListOf(&arrow.TimestampType{Unit: arrow.Microsecond, TimeZone: "UTC"})),
reflect.TypeFor[trino.NullSlice3String](): arrow.ListOf(arrow.ListOf(arrow.ListOf(arrow.BinaryTypes.String))),
reflect.TypeFor[trino.NullSlice3Int64](): arrow.ListOf(arrow.ListOf(arrow.ListOf(arrow.PrimitiveTypes.Int64))),
reflect.TypeFor[trino.NullSlice3Float64](): arrow.ListOf(arrow.ListOf(arrow.ListOf(arrow.PrimitiveTypes.Float64))),
reflect.TypeFor[trino.NullSlice3Bool](): arrow.ListOf(arrow.ListOf(arrow.ListOf(arrow.FixedWidthTypes.Boolean))),
reflect.TypeFor[trino.NullSlice3Time](): arrow.ListOf(arrow.ListOf(arrow.ListOf(&arrow.TimestampType{Unit: arrow.Microsecond, TimeZone: "UTC"}))),
}

// Clamps precision to maximum supported value (9 fractional digits = nanoseconds)
func convertPrecisionToTimeUnit(precision int64) arrow.TimeUnit {
if precision > 9 {
Expand Down Expand Up @@ -178,12 +205,43 @@ func (m *trinoTypeConverter) CreateInserter(field *arrow.Field, builder array.Bu
default:
return nil, fmt.Errorf("unsupported interval type: %s", dbTypeName)
}
case *arrow.ListType:
lb := builder.(*array.ListBuilder)
elemField := arrow.Field{Name: "item", Type: fieldType.Elem(), Nullable: true}
childIns, err := m.CreateInserter(&elemField, lb.ValueBuilder())
if err != nil {
return nil, fmt.Errorf("failed to create child inserter for list: %w", err)
}
return &listInserter{builder: lb, childInserter: childIns}, nil
default:
// For all other types, use default inserter
return m.DefaultTypeConverter.CreateInserter(field, builder)
}
}

type listInserter struct {
builder *array.ListBuilder
childInserter sqlwrapper.Inserter
}

func (ins *listInserter) AppendValue(sqlValue any) error {
if sqlValue == nil {
ins.builder.AppendNull()
return nil
}
slice, ok := sqlValue.([]any)
if !ok {
return fmt.Errorf("expected []interface{} for list type, got %T", sqlValue)
}
ins.builder.Append(true)
for _, elem := range slice {
if err := ins.childInserter.AppendValue(elem); err != nil {
return err
}
}
return nil
}

func unwrap(val any) (any, error) {
if v, ok := val.(driver.Valuer); ok {
return v.Value()
Expand Down
1 change: 1 addition & 0 deletions go/trino_test.go
Comment thread
lidavidm marked this conversation as resolved.
Original file line number Diff line number Diff line change
Expand Up @@ -241,6 +241,7 @@ func (q *TrinoQuirks) SupportsTransactions() bool { return fals
func (q *TrinoQuirks) SupportsGetParameterSchema() bool { return false }
func (q *TrinoQuirks) SupportsDynamicParameterBinding() bool { return false }
func (q *TrinoQuirks) SupportsErrorIngestIncompatibleSchema() bool { return false }
func (q *TrinoQuirks) SupportsGetTableSchema() bool { return true }
func (q *TrinoQuirks) Catalog() string { return "memory" }
func (q *TrinoQuirks) DBSchema() string { return "default" }

Expand Down
3 changes: 3 additions & 0 deletions go/validation/queries/type/select/array_varchar.json
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
{"res": ["a", "b"]}
{"res": null}
{"res": []}
17 changes: 17 additions & 0 deletions go/validation/queries/type/select/array_varchar.schema.json
Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
{
"format": "+s",
"children": [
{
"name": "res",
"format": "+l",
"flags": ["nullable"],
"children": [
{
"name": "item",
"format": "u",
"flags": ["nullable"]
}
]
}
]
}
8 changes: 8 additions & 0 deletions go/validation/queries/type/select/array_varchar.setup.sql
Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
CREATE TABLE test_array_varchar (
idx INTEGER,
res ARRAY(VARCHAR)
);

INSERT INTO test_array_varchar (idx, res) VALUES (1, ARRAY['a', 'b']);
INSERT INTO test_array_varchar (idx, res) VALUES (2, NULL);
INSERT INTO test_array_varchar (idx, res) VALUES (3, ARRAY[]);
1 change: 1 addition & 0 deletions go/validation/queries/type/select/array_varchar.sql
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
SELECT res FROM test_array_varchar ORDER BY idx
19 changes: 19 additions & 0 deletions go/validation/queries/type/select/array_varchar.toml
Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
# Copyright (c) 2026 ADBC Drivers Contributors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

[setup]
drop = "test_array_varchar"

[tags]
sql-type-name = "ARRAY"
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