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duckdb_test.go
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package duckdb
import (
"context"
"database/sql"
"database/sql/driver"
"encoding/json"
"fmt"
"math/big"
"os"
"reflect"
"testing"
"time"
"github.com/google/uuid"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestOpen(t *testing.T) {
t.Parallel()
t.Run("without config", func(t *testing.T) {
db := openDB(t)
defer db.Close()
require.NotNil(t, db)
})
t.Run("with config", func(t *testing.T) {
db, err := sql.Open("duckdb", "?access_mode=read_write&threads=4")
require.NoError(t, err)
defer db.Close()
var (
accessMode string
threads int64
)
res := db.QueryRow("SELECT current_setting('access_mode'), current_setting('threads')")
require.NoError(t, res.Scan(&accessMode, &threads))
require.Equal(t, int64(4), threads)
require.Equal(t, "read_write", accessMode)
})
t.Run("existing sqlite database", func(t *testing.T) {
db, err := sql.Open("duckdb", "sqlite:testdata/pets.sqlite")
require.NoError(t, err)
defer db.Close()
var species string
res := db.QueryRow("SELECT species FROM pets WHERE id=1")
require.NoError(t, res.Scan(&species))
require.Equal(t, "Gopher", species)
})
}
func TestConnectorBootQueries(t *testing.T) {
t.Run("many boot queries", func(t *testing.T) {
connector, err := NewConnector("", func(execer driver.ExecerContext) error {
bootQueries := []string{
"INSTALL 'json'",
"LOAD 'json'",
"SET schema=main",
"SET search_path=main",
}
for _, query := range bootQueries {
_, err := execer.ExecContext(context.Background(), query, nil)
require.NoError(t, err)
}
return nil
})
require.NoError(t, err)
db := sql.OpenDB(connector)
defer db.Close()
})
t.Run("readme example", func(t *testing.T) {
db, err := sql.Open("duckdb", "foo.db")
require.NoError(t, err)
_ = db.Close()
connector, err := NewConnector("foo.db?access_mode=read_only&threads=4", func(execer driver.ExecerContext) error {
bootQueries := []string{
"INSTALL 'json'",
"LOAD 'json'",
}
for _, query := range bootQueries {
_, err := execer.ExecContext(context.Background(), query, nil)
require.NoError(t, err)
}
return nil
})
require.NoError(t, err)
db = sql.OpenDB(connector)
_ = db.Close()
err = os.Remove("foo.db")
require.NoError(t, err)
})
}
func TestConnector_Close(t *testing.T) {
t.Parallel()
connector, err := NewConnector("", nil)
require.NoError(t, err)
// check that multiple close calls don't cause panics or errors
require.NoError(t, connector.Close())
require.NoError(t, connector.Close())
}
func TestConnPool(t *testing.T) {
db := openDB(t)
db.SetMaxOpenConns(2) // set connection pool size greater than 1
defer db.Close()
createTable(db, t)
// Get two separate connections and check they're consistent
conn1, err := db.Conn(context.Background())
require.NoError(t, err)
conn2, err := db.Conn(context.Background())
require.NoError(t, err)
res, err := conn1.ExecContext(context.Background(), "INSERT INTO foo VALUES ('lala', ?), ('lalo', ?)", 12345, 1234)
require.NoError(t, err)
ra, err := res.RowsAffected()
require.NoError(t, err)
require.Equal(t, int64(2), ra)
require.NoError(t, err)
rows, err := conn1.QueryContext(context.Background(), "select bar from foo limit 1")
require.NoError(t, err)
require.True(t, rows.Next())
rows.Close()
require.NoError(t, err)
rows, err = conn2.QueryContext(context.Background(), "select bar from foo limit 1")
require.NoError(t, err)
require.True(t, rows.Next())
rows.Close()
err = conn1.Close()
require.NoError(t, err)
err = conn2.Close()
require.NoError(t, err)
}
func TestConnInit(t *testing.T) {
connector, err := NewConnector("", func(execer driver.ExecerContext) error {
bootQueries := []string{
"INSTALL 'json'",
"LOAD 'json'",
}
for _, qry := range bootQueries {
_, err := execer.ExecContext(context.Background(), qry, nil)
if err != nil {
return err
}
}
return nil
})
require.NoError(t, err)
db := sql.OpenDB(connector)
db.SetMaxOpenConns(2) // set connection pool size greater than 1
defer db.Close()
// Get two separate connections and check they're consistent
conn1, err := db.Conn(context.Background())
require.NoError(t, err)
conn2, err := db.Conn(context.Background())
require.NoError(t, err)
res, err := conn1.ExecContext(context.Background(), "CREATE TABLE example (j JSON)")
require.NoError(t, err)
ra, err := res.RowsAffected()
require.NoError(t, err)
require.Equal(t, int64(0), ra)
res, err = conn2.ExecContext(context.Background(), "INSERT INTO example VALUES(' { \"family\": \"anatidae\", \"species\": [ \"duck\", \"goose\", \"swan\", null ] }')")
require.NoError(t, err)
ra, err = res.RowsAffected()
require.NoError(t, err)
require.Equal(t, int64(1), ra)
require.NoError(t, err)
rows, err := conn1.QueryContext(context.Background(), "SELECT json_valid(j) FROM example")
require.NoError(t, err)
require.True(t, rows.Next())
rows.Close()
require.NoError(t, err)
rows, err = conn2.QueryContext(context.Background(), "SELECT json_valid(j) FROM example")
require.NoError(t, err)
require.True(t, rows.Next())
rows.Close()
err = conn1.Close()
require.NoError(t, err)
err = conn2.Close()
require.NoError(t, err)
}
func TestExec(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
require.NotNil(t, createTable(db, t))
}
func TestQuery(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
createTable(db, t)
t.Run("simple", func(t *testing.T) {
res, err := db.Exec("INSERT INTO foo VALUES ('lala', ?), ('lalo', ?)", 12345, 1234)
require.NoError(t, err)
ra, err := res.RowsAffected()
require.NoError(t, err)
require.Equal(t, int64(2), ra)
rows, err := db.Query("SELECT bar, baz FROM foo WHERE baz > ?", 12344)
require.NoError(t, err)
defer rows.Close()
found := false
for rows.Next() {
var (
bar string
baz int
)
err := rows.Scan(&bar, &baz)
require.NoError(t, err)
if bar != "lala" || baz != 12345 {
t.Errorf("wrong values for bar [%s] and baz [%d]", bar, baz)
}
found = true
}
require.True(t, found, "could not find row")
})
t.Run("large number of rows", func(t *testing.T) {
_, err := db.Exec("CREATE TABLE integers AS SELECT * FROM range(0, 100000, 1) t(i);")
require.NoError(t, err)
rows, err := db.Query("SELECT i FROM integers ORDER BY i ASC")
require.NoError(t, err)
defer rows.Close()
expected := 0
for rows.Next() {
var i int
require.NoError(t, rows.Scan(&i))
assert.Equal(t, expected, i)
expected++
}
})
t.Run("wrong syntax", func(t *testing.T) {
_, err := db.Query("select * from tbl col=?", 1)
require.Error(t, err, "should return error with invalid syntax")
})
t.Run("missing parameter", func(t *testing.T) {
_, err := db.Query("select * from tbl col=?")
require.Error(t, err, "should return error with missing parameters")
})
t.Run("null", func(t *testing.T) {
var s *int
require.NoError(t, db.QueryRow("select null").Scan(&s))
require.Nil(t, s)
})
}
func TestStruct(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
createTable(db, t)
t.Run("scan single struct", func(t *testing.T) {
row := db.QueryRow("SELECT {'x': 1, 'y': 2}")
type point struct {
X int
Y int
}
want := Composite[point]{
point{1, 2},
}
var result Composite[point]
require.NoError(t, row.Scan(&result))
require.Equal(t, want, result)
})
t.Run("scan slice of structs", func(t *testing.T) {
_, err := db.Exec("INSERT INTO foo VALUES('lala', ?), ('lala', ?), ('lalo', 42), ('lalo', 43)", 12345, 12346)
require.NoError(t, err)
type row struct {
Bar string
Baz int
}
want := []Composite[row]{
{row{"lalo", 42}},
{row{"lalo", 43}},
{row{"lala", 12345}},
{row{"lala", 12346}},
}
rows, err := db.Query("SELECT struct_pack(bar, baz) FROM foo ORDER BY baz")
require.NoError(t, err)
defer rows.Close()
var result []Composite[row]
for rows.Next() {
var res Composite[row]
err := rows.Scan(&res)
require.NoError(t, err)
result = append(result, res)
}
require.Equal(t, want, result)
})
}
func TestMap(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
t.Run("select map", func(t *testing.T) {
var m Map
require.NoError(t, db.QueryRow("SELECT map(['foo', 'bar'], ['a', 'e'])").Scan(&m))
require.Equal(t, Map{
"foo": "a",
"bar": "e",
}, m)
})
t.Run("select nested map", func(t *testing.T) {
var m Map
err := db.QueryRow("SELECT map([map([1], [1]), map([2], [2])], ['a', 'e'])").Scan(&m)
require.ErrorIs(t, err, errUnsupportedMapKeyType)
})
t.Run("insert map", func(t *testing.T) {
tests := []struct {
sqlType string
input Map
}{
// {
// "MAP(VARCHAR, VARCHAR)",
// Map{"foo": "bar"},
// },
// {
// "MAP(INTEGER, VARCHAR)",
// Map{int32(1): "bar"},
// },
// {
// "MAP(VARCHAR, BIGINT)",
// Map{"foo": int64(2)},
// },
// {
// "MAP(VARCHAR, BOOLEAN)",
// Map{"foo": true},
// },
// {
// "MAP(DOUBLE, VARCHAR)",
// Map{1.1: "foobar"},
// },
}
for i, test := range tests {
_, err := db.Exec(fmt.Sprintf("CREATE TABLE map_test_%d(properties %s)", i, test.sqlType))
require.NoError(t, err)
_, err = db.Exec(fmt.Sprintf("INSERT INTO map_test_%d VALUES(?)", i), test.input)
require.NoError(t, err, test.input)
var m Map
require.NoError(t, db.QueryRow(fmt.Sprintf("SELECT properties FROM map_test_%d", i)).Scan(&m))
require.Equal(t, test.input, m)
}
})
}
func TestList(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
t.Run("integer list", func(t *testing.T) {
const n = 1000
var row Composite[[]int]
require.NoError(t, db.QueryRow("SELECT range(0, ?, 1)", n).Scan(&row))
require.Equal(t, n, len(row.Get()))
for i := 0; i < n; i++ {
require.Equal(t, i, row.Get()[i])
}
})
}
func compareDecimal(t *testing.T, want Decimal, got Decimal) {
require.Equal(t, want.Scale, got.Scale)
require.Equal(t, want.Width, got.Width)
require.Equal(t, want.Value.String(), got.Value.String())
}
func TestDecimal(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
t.Run("decimal widths", func(t *testing.T) {
for i := 1; i <= 38; i++ {
var f Decimal
require.NoError(t, db.QueryRow(fmt.Sprintf("SELECT 0::DECIMAL(%d, 1)", i)).Scan(&f))
require.Equal(t, Decimal{Width: uint8(i), Value: big.NewInt(0), Scale: 1}, f)
}
})
t.Run("multiple decimal types", func(t *testing.T) {
rows, err := db.Query(`SELECT * FROM (VALUES
(1.23::DECIMAL(3, 2)),
(-1.23::DECIMAL(3, 2)),
(123.45::DECIMAL(5, 2)),
(-123.45::DECIMAL(5, 2)),
(123456789.01::DECIMAL(11, 2)),
(-123456789.01::DECIMAL(11, 2)),
(1234567890123456789.234::DECIMAL(22, 3)),
(-1234567890123456789.234::DECIMAL(22, 3)),
) v
ORDER BY v ASC`)
require.NoError(t, err)
defer rows.Close()
bigNumber, success := new(big.Int).SetString("1234567890123456789234", 10)
require.True(t, success, "failed to parse big number")
bigNumberNegative, success := new(big.Int).SetString("-1234567890123456789234", 10)
require.True(t, success, "failed to parse big number")
tests := []struct {
input string
want Decimal
}{
{input: "1.23::DECIMAL(3, 2)", want: Decimal{Value: big.NewInt(123), Width: 3, Scale: 2}},
{input: "-1.23::DECIMAL(3, 2)", want: Decimal{Value: big.NewInt(-123), Width: 3, Scale: 2}},
{input: "123.45::DECIMAL(5, 2)", want: Decimal{Value: big.NewInt(12345), Width: 5, Scale: 2}},
{input: "-123.45::DECIMAL(5, 2)", want: Decimal{Value: big.NewInt(-12345), Width: 5, Scale: 2}},
{input: "123456789.01::DECIMAL(11, 2)", want: Decimal{Value: big.NewInt(12345678901), Width: 11, Scale: 2}},
{input: "-123456789.01::DECIMAL(11, 2)", want: Decimal{Value: big.NewInt(-12345678901), Width: 11, Scale: 2}},
{input: "1234567890123456789.234::DECIMAL(22, 3)", want: Decimal{Value: bigNumber, Width: 22, Scale: 3}},
{input: "-1234567890123456789.234::DECIMAL(22, 3)", want: Decimal{Value: bigNumberNegative, Width: 22, Scale: 3}},
}
for _, tc := range tests {
row := db.QueryRow(fmt.Sprintf("SELECT %s", tc.input))
var fs Decimal
require.NoError(t, row.Scan(&fs))
compareDecimal(t, tc.want, fs)
}
})
t.Run("huge decimal", func(t *testing.T) {
bigNumber, success := new(big.Int).SetString("12345678901234567890123456789", 10)
require.True(t, success, "failed to parse big number")
var f Decimal
require.NoError(t, db.QueryRow("SELECT 123456789.01234567890123456789::DECIMAL(29, 20)").Scan(&f))
compareDecimal(t, Decimal{Value: bigNumber, Width: 29, Scale: 20}, f)
})
t.Run("decimal to float64", func(t *testing.T) {
tests := []struct {
input string
want float64
}{
{input: "1.23::DECIMAL(3, 2)", want: 1.23},
{input: "-1.23::DECIMAL(3, 2)", want: -1.23},
{input: "123.45::DECIMAL(5, 2)", want: 123.45},
{input: "-123.45::DECIMAL(5, 2)", want: -123.45},
{input: "123456789.01::DECIMAL(11, 2)", want: 123456789.01},
{input: "-123456789.01::DECIMAL(11, 2)", want: -123456789.01},
{input: "1234567890123456789.234::DECIMAL(22, 3)", want: 1234567890123456789.234},
{input: "-1234567890123456789.234::DECIMAL(22, 3)", want: -1234567890123456789.234},
{input: "123456789.01234567890123456789::DECIMAL(29, 20)", want: 123456789.01234567890123456789},
{input: "-123456789.01234567890123456789::DECIMAL(29, 20)", want: -123456789.01234567890123456789},
}
for _, tc := range tests {
row := db.QueryRow(fmt.Sprintf("SELECT %s", tc.input))
var fs Decimal
require.NoError(t, row.Scan(&fs))
require.Equal(t, tc.want, fs.Float64())
}
})
}
func TestUUID(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
_, err := db.Exec("CREATE TABLE uuid_test(uuid UUID)")
require.NoError(t, err)
tests := []uuid.UUID{
uuid.New(),
uuid.Nil,
uuid.MustParse("80000000-0000-0000-0000-200000000000"),
}
for _, v := range tests {
_, err := db.Exec("INSERT INTO uuid_test VALUES(?)", v)
require.NoError(t, err)
var uuid uuid.UUID
require.NoError(t, db.QueryRow("SELECT uuid FROM uuid_test WHERE uuid = ?", v).Scan(&uuid))
require.Equal(t, v, uuid)
require.NoError(t, db.QueryRow("SELECT ?", v).Scan(&uuid))
require.Equal(t, v, uuid)
require.NoError(t, db.QueryRow("SELECT ?::uuid", v).Scan(&uuid))
require.Equal(t, v, uuid)
}
}
func TestENUMs(t *testing.T) {
t.Parallel()
type environment string
const (
Sea environment = "Sea"
Air environment = "Air"
Land environment = "Land"
)
db := openDB(t)
defer db.Close()
_, err := db.Exec("CREATE TYPE element AS ENUM ('Sea', 'Air', 'Land')")
require.NoError(t, err)
_, err = db.Exec("CREATE TABLE vehicles (name text, environment element)")
require.NoError(t, err)
_, err = db.Exec("INSERT INTO vehicles VALUES (?, ?), (?, ?)", "Aircraft", Air, "Boat", Sea)
require.NoError(t, err)
var name string
var env environment
require.NoError(t, db.QueryRow("SELECT name, environment FROM vehicles WHERE environment = ?", Air).Scan(&name, &env))
require.Equal(t, "Aircraft", name)
require.Equal(t, Air, env)
// enum list
_, err = db.Exec("CREATE TABLE all_enums (environments element[])")
require.NoError(t, err)
_, err = db.Exec("INSERT INTO all_enums VALUES ([?, ?, ?])", Air, Land, Sea)
require.NoError(t, err)
var row Composite[[]environment]
require.NoError(t, db.QueryRow("SELECT environments FROM all_enums").Scan(&row))
require.ElementsMatch(t, []environment{Air, Sea, Land}, row.Get())
}
func TestHugeInt(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
t.Run("scan hugeint", func(t *testing.T) {
tests := []string{
"0",
"1",
"-1",
"9223372036854775807",
"-9223372036854775808",
"170141183460469231731687303715884105727",
"-170141183460469231731687303715884105727",
}
for _, expected := range tests {
t.Run(expected, func(t *testing.T) {
var res *big.Int
err := db.QueryRow(fmt.Sprintf("SELECT %s::HUGEINT", expected)).Scan(&res)
require.NoError(t, err)
require.Equal(t, expected, res.String())
})
}
})
t.Run("bind hugeint", func(t *testing.T) {
_, err := db.Exec("CREATE TABLE hugeint_test (number HUGEINT)")
require.NoError(t, err)
val := big.NewInt(1)
val.SetBit(val, 101, 1)
_, err = db.Exec("INSERT INTO hugeint_test VALUES(?)", val)
require.NoError(t, err)
var res *big.Int
err = db.QueryRow("SELECT number FROM hugeint_test WHERE number = ?", val).Scan(&res)
require.NoError(t, err)
require.Equal(t, val.String(), res.String())
tooHuge := big.NewInt(1)
tooHuge.SetBit(tooHuge, 129, 1)
_, err = db.Exec("INSERT INTO hugeint_test VALUES(?)", tooHuge)
require.Error(t, err)
require.Contains(t, err.Error(), "too big")
})
}
func TestVarchar(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
var s string
t.Run("size is smaller than 12", func(t *testing.T) {
require.NoError(t, db.QueryRow("select 'inline'").Scan(&s))
require.Equal(t, "inline", s)
})
t.Run("size is exactly 12", func(t *testing.T) {
require.NoError(t, db.QueryRow("select 'inlineSize12'").Scan(&s))
require.Equal(t, "inlineSize12", s)
})
t.Run("size is 13", func(t *testing.T) {
require.NoError(t, db.QueryRow("select 'inlineSize13_'").Scan(&s))
require.Equal(t, "inlineSize13_", s)
})
t.Run("size is greater than 12", func(t *testing.T) {
const q = "uninlined string that is greater than 12 bytes long"
require.NoError(t, db.QueryRow(fmt.Sprintf("SELECT '%s'", q)).Scan(&s))
require.Equal(t, q, s)
})
}
func TestBlob(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
var bytes []byte
t.Run("select as string", func(t *testing.T) {
require.NoError(t, db.QueryRow("SELECT 'AB'::BLOB;").Scan(&bytes))
require.Equal(t, "AB", string(bytes))
})
t.Run("select as hex", func(t *testing.T) {
require.NoError(t, db.QueryRow("SELECT '\\xAA'::BLOB").Scan(&bytes))
require.Equal(t, []byte{0xAA}, bytes)
})
}
func TestTimestampTZ(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
_, err := db.Exec("CREATE TABLE IF NOT EXISTS tbl (tz TIMESTAMPTZ)")
require.NoError(t, err)
IST, err := time.LoadLocation("Asia/Kolkata")
require.NoError(t, err)
const longForm = "2006-01-02 15:04:05 MST"
ts, err := time.ParseInLocation(longForm, "2016-01-17 20:04:05 IST", IST)
require.NoError(t, err)
_, err = db.Exec("INSERT INTO tbl (tz) VALUES(?)", ts)
require.NoError(t, err)
var tz time.Time
err = db.QueryRow("SELECT tz FROM tbl").Scan(&tz)
require.NoError(t, err)
require.Equal(t, ts.UTC(), tz)
}
func TestBoolean(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
var res bool
t.Run("scan", func(t *testing.T) {
require.NoError(t, db.QueryRow("SELECT true").Scan(&res))
require.Equal(t, true, res)
require.NoError(t, db.QueryRow("SELECT false").Scan(&res))
require.Equal(t, false, res)
})
t.Run("bind", func(t *testing.T) {
require.NoError(t, db.QueryRow("SELECT ?", true).Scan(&res))
require.Equal(t, true, res)
require.NoError(t, db.QueryRow("SELECT ?", false).Scan(&res))
require.Equal(t, false, res)
require.NoError(t, db.QueryRow("SELECT ?", 0).Scan(&res))
require.Equal(t, false, res)
require.NoError(t, db.QueryRow("SELECT ?", 1).Scan(&res))
require.Equal(t, true, res)
})
}
func TestJSON(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
loadJSONExt(t, db)
var data string
t.Run("select empty JSON", func(t *testing.T) {
require.NoError(t, db.QueryRow("SELECT '{}'::JSON").Scan(&data))
require.Equal(t, "{}", string(data))
})
t.Run("select from marshalled JSON", func(t *testing.T) {
val, _ := json.Marshal(struct {
Foo string `json:"foo"`
}{
Foo: "bar",
})
require.NoError(t, db.QueryRow(`SELECT ?::JSON->>'foo'`, string(val)).Scan(&data))
require.Equal(t, "bar", data)
})
t.Run("select JSON array", func(t *testing.T) {
require.NoError(t, db.QueryRow("SELECT json_array('foo', 'bar')").Scan(&data))
require.Equal(t, `["foo","bar"]`, data)
var items []string
require.NoError(t, json.Unmarshal([]byte(data), &items))
require.Equal(t, len(items), 2)
require.Equal(t, items, []string{"foo", "bar"})
})
}
// CAST(? as DATE) generate result of type Date (time.Time)
func TestDate(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
tests := map[string]struct {
want time.Time
input string
}{
"epoch": {input: "1970-01-01", want: time.UnixMilli(0).UTC()},
"before 1970": {input: "1950-12-12", want: time.Date(1950, 12, 12, 0, 0, 0, 0, time.UTC)},
"after 1970": {input: "2022-12-12", want: time.Date(2022, 12, 12, 0, 0, 0, 0, time.UTC)},
}
for name, tc := range tests {
t.Run(name, func(t *testing.T) {
var res time.Time
err := db.QueryRow("SELECT CAST(? as DATE)", tc.input).Scan(&res)
require.NoError(t, err)
require.Equal(t, tc.want, res)
})
}
}
func TestTimestamp(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
tests := map[string]struct {
input string
want time.Time
}{
"epoch": {input: "1970-01-01", want: time.UnixMilli(0).UTC()},
"before 1970": {input: "1950-12-12", want: time.Date(1950, 12, 12, 0, 0, 0, 0, time.UTC)},
"after 1970": {input: "2022-12-12", want: time.Date(2022, 12, 12, 0, 0, 0, 0, time.UTC)},
"HH:MM:SS": {input: "2022-12-12 11:35:43", want: time.Date(2022, 12, 12, 11, 35, 43, 0, time.UTC)},
"HH:MM:SS.DDDD": {input: "2022-12-12 11:35:43.5678", want: time.Date(2022, 12, 12, 11, 35, 43, 567800000, time.UTC)},
}
for name, tc := range tests {
t.Run(name, func(t *testing.T) {
var res time.Time
if err := db.QueryRow("SELECT CAST(? as TIMESTAMP)", tc.input).Scan(&res); err != nil {
t.Errorf("can not scan value %v", err)
} else if res != tc.want {
t.Errorf("expected value %v != resulting value %v", tc.want, res)
}
})
}
}
func TestInterval(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
t.Run("bind interval", func(t *testing.T) {
interval := Interval{Days: 10, Months: 4, Micros: 4}
row := db.QueryRow("SELECT ?::INTERVAL", interval)
var res Interval
require.NoError(t, row.Scan(&res))
require.Equal(t, interval, res)
})
t.Run("scan interval", func(t *testing.T) {
tests := map[string]struct {
input string
want Interval
}{
"simple interval": {
input: "INTERVAL 5 HOUR",
want: Interval{Days: 0, Months: 0, Micros: 18000000000},
},
"interval arithmetic": {
input: "INTERVAL 1 DAY + INTERVAL 5 DAY",
want: Interval{Days: 6, Months: 0, Micros: 0},
},
"timestamp arithmetic": {
input: "CAST('2022-05-01' as TIMESTAMP) - CAST('2022-04-01' as TIMESTAMP)",
want: Interval{Days: 30, Months: 0, Micros: 0},
},
}
for name, tc := range tests {
t.Run(name, func(t *testing.T) {
var res Interval
require.NoError(t, db.QueryRow(fmt.Sprintf("SELECT %s", tc.input)).Scan(&res))
require.Equal(t, tc.want, res)
})
}
})
}
func TestEmpty(t *testing.T) {
t.Parallel()
db := openDB(t)
defer db.Close()
rows, err := db.Query(`SELECT 1 WHERE 1 = 0`)
require.NoError(t, err)
defer rows.Close()
require.False(t, rows.Next())
require.NoError(t, rows.Err())
}
func TestTypeNamesAndScanTypes(t *testing.T) {
tests := []struct {
sql string
value any
typeName string
}{
// DUCKDB_TYPE_BOOLEAN
{
sql: "SELECT true AS col",
value: true,
typeName: "BOOLEAN",
},
// DUCKDB_TYPE_TINYINT
{
sql: "SELECT 31::TINYINT AS col",
value: int8(31),
typeName: "TINYINT",
},
// DUCKDB_TYPE_SMALLINT
{
sql: "SELECT 31::SMALLINT AS col",
value: int16(31),
typeName: "SMALLINT",
},
// DUCKDB_TYPE_INTEGER
{
sql: "SELECT 31::INTEGER AS col",
value: int32(31),
typeName: "INTEGER",
},
// DUCKDB_TYPE_BIGINT
{
sql: "SELECT 31::BIGINT AS col",
value: int64(31),
typeName: "BIGINT",
},
// DUCKDB_TYPE_UTINYINT
{
sql: "SELECT 31::UTINYINT AS col",
value: uint8(31),
typeName: "UTINYINT",
},
// DUCKDB_TYPE_USMALLINT
{
sql: "SELECT 31::USMALLINT AS col",
value: uint16(31),
typeName: "USMALLINT",
},
// DUCKDB_TYPE_UINTEGER
{
sql: "SELECT 31::UINTEGER AS col",
value: uint32(31),
typeName: "UINTEGER",
},
// DUCKDB_TYPE_UBIGINT
{
sql: "SELECT 31::UBIGINT AS col",
value: uint64(31),
typeName: "UBIGINT",
},
// DUCKDB_TYPE_FLOAT
{
sql: "SELECT 3.14::FLOAT AS col",
value: float32(3.14),
typeName: "FLOAT",
},
// DUCKDB_TYPE_DOUBLE
{
sql: "SELECT 3.14::DOUBLE AS col",
value: float64(3.14),
typeName: "DOUBLE",
},
// DUCKDB_TYPE_TIMESTAMP
{
sql: "SELECT '1992-09-20 11:30:00'::TIMESTAMP AS col",
value: time.Date(1992, 9, 20, 11, 30, 0, 0, time.UTC),
typeName: "TIMESTAMP",
},
// DUCKDB_TYPE_DATE
{
sql: "SELECT '1992-09-20'::DATE AS col",
value: time.Date(1992, 9, 20, 0, 0, 0, 0, time.UTC),
typeName: "DATE",
},
// DUCKDB_TYPE_TIME
{
sql: "SELECT '11:30:00'::TIME AS col",
value: time.Date(1970, 1, 1, 11, 30, 0, 0, time.UTC),
typeName: "TIME",
},
// DUCKDB_TYPE_INTERVAL
{
sql: "SELECT INTERVAL 15 MINUTES AS col",
value: Interval{Micros: 15 * 60 * 1000000},
typeName: "INTERVAL",
},
// DUCKDB_TYPE_HUGEINT
{
sql: "SELECT 31::HUGEINT AS col",
value: big.NewInt(31),
typeName: "HUGEINT",
},
// DUCKDB_TYPE_VARCHAR
{
sql: "SELECT 'foo'::VARCHAR AS col",
value: "foo",
typeName: "VARCHAR",
},
// DUCKDB_TYPE_BLOB
{
sql: "SELECT 'foo'::BLOB AS col",
value: []byte("foo"),
typeName: "BLOB",
},
// DUCKDB_TYPE_DECIMAL
{
sql: "SELECT 31::DECIMAL(30,17) AS col",
value: Decimal{Value: big.NewInt(3100000000000000000), Width: 30, Scale: 17},
typeName: "DECIMAL(30,17)",
},
// DUCKDB_TYPE_TIMESTAMP_S
{
sql: "SELECT '1992-09-20 11:30:00'::TIMESTAMP_S AS col",
value: time.Date(1992, 9, 20, 11, 30, 0, 0, time.UTC),
typeName: "TIMESTAMP_S",
},
// DUCKDB_TYPE_TIMESTAMP_MS
{
sql: "SELECT '1992-09-20 11:30:00'::TIMESTAMP_MS AS col",
value: time.Date(1992, 9, 20, 11, 30, 0, 0, time.UTC),
typeName: "TIMESTAMP_MS",
},
// DUCKDB_TYPE_TIMESTAMP_NS
{
sql: "SELECT '1992-09-20 11:30:00'::TIMESTAMP_NS AS col",
value: time.Date(1992, 9, 20, 11, 30, 0, 0, time.UTC),
typeName: "TIMESTAMP_NS",
},
// DUCKDB_TYPE_LIST
{