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clickhouse_test.go
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package clickhouse_test
import (
"database/sql"
"fmt"
"strings"
"testing"
"time"
"github.com/kshvakov/clickhouse"
"github.com/stretchr/testify/assert"
)
func Test_OpenConnectAndPing(t *testing.T) {
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) {
assert.NoError(t, connect.Ping())
}
}
func Test_CreateTable(t *testing.T) {
const ddl = `
CREATE TABLE clickhouse_test_create_table (
click_id FixedString(64),
click_time DateTime
) Engine=Memory
`
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_create_table"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.Error(t, err) {
if exception, ok := err.(*clickhouse.Exception); assert.True(t, ok) {
assert.Equal(t, int32(57), exception.Code)
}
}
}
}
}
}
func Test_Insert(t *testing.T) {
const (
ddl = `
CREATE TABLE clickhouse_test_insert (
int8 Int8,
int16 Int16,
int32 Int32,
int64 Int64,
uint8 UInt8,
uint16 UInt16,
uint32 UInt32,
uint64 UInt64,
float32 Float32,
float64 Float64,
string String,
fString FixedString(2),
date Date,
datetime DateTime
) Engine=Memory
`
dml = `
INSERT INTO clickhouse_test_insert (
int8,
int16,
int32,
int64,
uint8,
uint16,
uint32,
uint64,
float32,
float64,
string,
fString,
date,
datetime
) VALUES (
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?
)
`
query = `
SELECT
int8,
int16,
int32,
int64,
uint8,
uint16,
uint32,
uint64,
float32,
float64,
string,
fString,
date,
datetime
FROM clickhouse_test_insert
`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_insert"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if stmt, err := tx.Prepare(dml); assert.NoError(t, err) {
for i := 1; i <= 10; i++ {
_, err = stmt.Exec(
-1*i, -2*i, -4*i, -8*i, // int
uint8(1*i), uint16(2*i), uint32(4*i), uint64(8*i), // uint
1.32*float32(i), 1.64*float64(i), //float
fmt.Sprintf("string %d", i), // string
"RU", //fixedstring,
time.Now(), //date
time.Now(), //datetime
)
if !assert.NoError(t, err) {
return
}
}
}
if assert.NoError(t, tx.Commit()) {
var item struct {
Int8 int8
Int16 int16
Int32 int32
Int64 int64
UInt8 uint8
UInt16 uint16
UInt32 uint32
UInt64 uint64
Float32 float32
Float64 float64
String string
FixedString string
Date time.Time
DateTime time.Time
}
if rows, err := connect.Query(query); assert.NoError(t, err) {
var count int
for rows.Next() {
count++
err := rows.Scan(
&item.Int8,
&item.Int16,
&item.Int32,
&item.Int64,
&item.UInt8,
&item.UInt16,
&item.UInt32,
&item.UInt64,
&item.Float32,
&item.Float64,
&item.String,
&item.FixedString,
&item.Date,
&item.DateTime,
)
if !assert.NoError(t, err) {
return
}
}
assert.Equal(t, int(10), count)
}
}
}
}
}
}
}
func Test_Select(t *testing.T) {
const (
ddl = `
CREATE TABLE clickhouse_test_select (
id Int32,
code FixedString(2),
date Date,
datetime DateTime
) Engine=Memory
`
dml = `
INSERT INTO clickhouse_test_select VALUES (?, ?, ?, ?)
`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_select"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if stmt, err := tx.Prepare(dml); assert.NoError(t, err) {
if _, err := stmt.Exec(1, "RU", clickhouse.Date(time.Date(2017, 1, 20, 0, 0, 0, 0, time.Local)), time.Date(2017, 1, 20, 13, 0, 0, 0, time.Local)); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec(2, "UA", time.Date(2017, 1, 20, 0, 0, 0, 0, time.UTC), time.Date(2017, 1, 20, 14, 0, 0, 0, time.Local)); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec(3, "DE", time.Date(2017, 1, 19, 0, 0, 0, 0, time.UTC), time.Date(2017, 1, 20, 14, 0, 0, 0, time.Local)); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec(4, "US", time.Date(2017, 1, 19, 0, 0, 0, 0, time.UTC), time.Date(2017, 1, 20, 13, 0, 0, 0, time.Local)); !assert.NoError(t, err) {
return
}
if assert.NoError(t, tx.Commit()) {
if row := connect.QueryRow("SELECT COUNT(*) FROM clickhouse_test_select"); assert.NotNil(t, row) {
var count int
if err := row.Scan(&count); assert.NoError(t, err) {
assert.Equal(t, int(4), count)
}
}
if row := connect.QueryRow("SELECT COUNT(*) FROM clickhouse_test_select WHERE date = ?", time.Date(2017, 1, 20, 0, 0, 0, 0, time.UTC)); assert.NotNil(t, row) {
var count int
if err := row.Scan(&count); assert.NoError(t, err) {
assert.Equal(t, int(2), count)
}
}
if row := connect.QueryRow("SELECT COUNT(*) FROM clickhouse_test_select WHERE datetime = ?", time.Date(2017, 1, 20, 14, 0, 0, 0, time.Local)); assert.NotNil(t, row) {
var count int
if err := row.Scan(&count); assert.NoError(t, err) {
assert.Equal(t, int(2), count)
}
}
if row := connect.QueryRow("SELECT COUNT(*) FROM clickhouse_test_select WHERE id IN (?, ?, ?)", 1, 3, 4); assert.NotNil(t, row) {
var count int
if err := row.Scan(&count); assert.NoError(t, err) {
assert.Equal(t, int(3), count)
}
}
if row := connect.QueryRow("SELECT COUNT(*) FROM clickhouse_test_select WHERE code IN (?, ?, ?)", "US", "DE", "RU"); assert.NotNil(t, row) {
var count int
if err := row.Scan(&count); assert.NoError(t, err) {
assert.Equal(t, int(3), count)
}
}
}
}
}
}
}
}
}
func Test_SimpleSelect(t *testing.T) {
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if rows, err := connect.Query("SELECT a FROM (SELECT 1 AS a UNION ALL SELECT 2 AS a UNION ALL SELECT 3 AS a) ORDER BY a ASC"); assert.NoError(t, err) {
defer rows.Close()
var cnt int
for rows.Next() {
cnt++
var value int
if assert.NoError(t, rows.Scan(&value)) {
assert.Equal(t, cnt, value)
}
}
assert.Equal(t, int(3), cnt)
}
if row := connect.QueryRow("SELECT min(a) FROM (SELECT 1 AS a UNION ALL SELECT 2 AS a UNION ALL SELECT 3 AS a)"); assert.NotNil(t, row) {
var min int64
if assert.NoError(t, row.Scan(&min)) {
assert.Equal(t, int64(1), min)
}
}
if row := connect.QueryRow("SELECT max(a) FROM (SELECT 1 AS a UNION ALL SELECT 2 AS a UNION ALL SELECT 3 AS a)"); assert.NotNil(t, row) {
var max int64
if assert.NoError(t, row.Scan(&max)) {
assert.Equal(t, int64(3), max)
}
}
if row := connect.QueryRow("SELECT sum(a) FROM (SELECT 1 AS a UNION ALL SELECT 2 AS a UNION ALL SELECT 3 AS a)"); assert.NotNil(t, row) {
var sum int64
if assert.NoError(t, row.Scan(&sum)) {
assert.Equal(t, int64(6), sum)
}
}
if row := connect.QueryRow("SELECT median(a) FROM (SELECT 1 AS a UNION ALL SELECT 2 AS a UNION ALL SELECT 3 AS a)"); assert.NotNil(t, row) {
var median float64
if assert.NoError(t, row.Scan(&median)) {
assert.Equal(t, float64(2), median)
}
}
}
}
func Test_ArrayT(t *testing.T) {
const (
ddl = `
CREATE TABLE clickhouse_test_array (
int8 Array(Int8),
int16 Array(Int16),
int32 Array(Int32),
int64 Array(Int64),
uint8 Array(UInt8),
uint16 Array(UInt16),
uint32 Array(UInt32),
uint64 Array(UInt64),
float32 Array(Float32),
float64 Array(Float64),
string Array(String),
fString Array(FixedString(2)),
date Array(Date),
datetime Array(DateTime)
) Engine=Memory
`
dml = `
INSERT INTO clickhouse_test_array (
int8,
int16,
int32,
int64,
uint8,
uint16,
uint32,
uint64,
float32,
float64,
string,
fString,
date,
datetime
) VALUES (
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?,
?
)
`
query = `
SELECT
int8,
int16,
int32,
int64,
uint8,
uint16,
uint32,
uint64,
float32,
float64,
string,
fString,
date,
datetime
FROM clickhouse_test_array
`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_array"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if stmt, err := tx.Prepare(dml); assert.NoError(t, err) {
for i := 1; i <= 10; i++ {
_, err = stmt.Exec(
clickhouse.Array([]int8{1, 2, 3}),
clickhouse.Array([]int16{5, 6, 7}),
clickhouse.Array([]int32{8, 9, 10}),
clickhouse.Array([]int64{11, 12, 13}),
clickhouse.Array([]uint8{14, 15, 16}),
clickhouse.Array([]uint16{17, 18, 19}),
clickhouse.Array([]uint32{20, 21, 22}),
clickhouse.Array([]uint64{23, 24, 25}),
clickhouse.Array([]float32{32.1, 32.2}),
clickhouse.Array([]float64{64.1, 64.2}),
clickhouse.Array([]string{fmt.Sprintf("A_%d", i), "B", "C"}),
clickhouse.ArrayFixedString(2, []string{"RU", "EN", "DE"}),
clickhouse.ArrayDate([]time.Time{time.Now(), time.Now()}),
clickhouse.ArrayDateTime([]time.Time{time.Now(), time.Now()}),
)
if !assert.NoError(t, err) {
return
}
_, err = stmt.Exec(
clickhouse.Array([]int8{100, 101, 102, 103, 104, 105}),
clickhouse.Array([]int16{200, 201}),
clickhouse.Array([]int32{300, 301, 302, 303}),
clickhouse.Array([]int64{400, 401, 402}),
clickhouse.Array([]uint8{250, 251, 252, 253, 254}),
clickhouse.Array([]uint16{1000, 1001, 1002, 1003, 1004}),
clickhouse.Array([]uint32{2001, 2002}),
clickhouse.Array([]uint64{3000}),
clickhouse.Array([]float32{1000.1, 100.1, 2000}),
clickhouse.Array([]float64{640, 8, 650.9, 703.5, 800}),
clickhouse.Array([]string{fmt.Sprintf("D_%d", i), "E", "F", "G"}),
clickhouse.ArrayFixedString(2, []string{"UA", "GB"}),
clickhouse.ArrayDate([]time.Time{time.Now(), time.Now(), time.Now(), time.Now()}),
clickhouse.ArrayDateTime([]time.Time{time.Now(), time.Now()}),
)
if !assert.NoError(t, err) {
return
}
}
}
if assert.NoError(t, tx.Commit()) {
var item struct {
Int8 []int8
Int16 []int16
Int32 []int32
Int64 []int64
UInt8 []uint8
UInt16 []uint16
UInt32 []uint32
UInt64 []uint64
Float32 []float32
Float64 []float64
String []string
FixedString []string
Date []time.Time
DateTime []time.Time
}
if rows, err := connect.Query(query); assert.NoError(t, err) {
var count int
for rows.Next() {
count++
err := rows.Scan(
&item.Int8,
&item.Int16,
&item.Int32,
&item.Int64,
&item.UInt8,
&item.UInt16,
&item.UInt32,
&item.UInt64,
&item.Float32,
&item.Float64,
&item.String,
&item.FixedString,
&item.Date,
&item.DateTime,
)
if !assert.NoError(t, err) {
return
}
t.Logf("Int8=%v, Int16=%v, Int32=%v, Int64=%v",
item.Int8,
item.Int16,
item.Int32,
item.Int64,
)
t.Logf("UInt8=%v, UInt16=%v, UInt32=%v, UInt64=%v",
item.UInt8,
item.UInt16,
item.UInt32,
item.UInt64,
)
t.Logf("Float32=%v, Float64=%v",
item.Float32,
item.Float64,
)
t.Logf("String=%v, FixedString=%v",
item.String,
item.FixedString,
)
t.Logf("Date=%v, DateTime=%v",
item.Date,
item.DateTime,
)
}
assert.Equal(t, int(20), count)
}
}
}
}
}
}
}
func Test_Insert_FixedString(t *testing.T) {
const (
ddl = `
CREATE TABLE clickhouse_test_fixed_string (
str2 FixedString(2),
str5 FixedString(5),
str10 FixedString(10)
) Engine=Memory
`
dml = `INSERT INTO clickhouse_test_fixed_string VALUES (?, ?, ?)`
query = `SELECT str2, str5, str10 FROM clickhouse_test_fixed_string`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_fixed_string"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if stmt, err := tx.Prepare(dml); assert.NoError(t, err) {
if _, err := stmt.Exec(strings.Repeat("a", 2), strings.Repeat("b", 5), strings.Repeat("c", 10)); assert.NoError(t, err) {
if _, err := stmt.Exec("A", "B", "C"); assert.NoError(t, err) {
assert.NoError(t, tx.Commit())
}
}
}
}
}
}
}
}
func Test_With_Totals(t *testing.T) {
const (
ddl = `
CREATE TABLE clickhouse_test_with_totals (
country FixedString(2)
) Engine=Memory
`
dml = `INSERT INTO clickhouse_test_with_totals (country) VALUES (?)`
query = `
SELECT
country,
COUNT(*)
FROM clickhouse_test_with_totals
GROUP BY country
WITH TOTALS
`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_with_totals"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if stmt, err := tx.Prepare(dml); assert.NoError(t, err) {
if _, err := stmt.Exec("RU"); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec("EN"); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec("RU"); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec("RU"); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec("EN"); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec("RU"); !assert.NoError(t, err) {
return
}
}
if assert.NoError(t, tx.Commit()) {
var item struct {
Country string
Count int64
}
if rows, err := connect.Query(query); assert.NoError(t, err) {
var count int
for rows.Next() {
count++
err := rows.Scan(
&item.Country,
&item.Count,
)
if !assert.NoError(t, err) {
return
}
switch item.Country {
case "RU":
if !assert.Equal(t, int64(4), item.Count) {
return
}
case "EN":
if !assert.Equal(t, int64(2), item.Count) {
return
}
default:
if !assert.Equal(t, int64(6), item.Count) {
return
}
}
}
assert.Equal(t, int(3), count)
}
}
}
}
}
}
}
func Test_Tx(t *testing.T) {
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
_, err = tx.Query("SELECT 1")
if assert.NoError(t, err) {
if !assert.NoError(t, tx.Rollback()) {
return
}
}
_, err = tx.Query("SELECT 1")
assert.Error(t, err)
}
}
}
func Test_Temporary_Table(t *testing.T) {
const (
ddl = `
CREATE TEMPORARY TABLE clickhouse_test_temporary_table (
ID UInt64
);
`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if _, err := tx.Exec(ddl); assert.NoError(t, err) {
if _, err := tx.Exec("INSERT INTO clickhouse_test_temporary_table (ID) SELECT number AS ID FROM system.numbers LIMIT 10"); assert.NoError(t, err) {
if rows, err := tx.Query("SELECT ID FROM clickhouse_test_temporary_table"); assert.NoError(t, err) {
var count int
for rows.Next() {
var num int
if err := rows.Scan(&num); !assert.NoError(t, err) {
return
}
count++
}
if _, err = tx.Query("SELECT ID FROM clickhouse_test_temporary_table"); assert.NoError(t, err) {
if _, err = connect.Query("SELECT ID FROM clickhouse_test_temporary_table"); assert.Error(t, err) {
if exception, ok := err.(*clickhouse.Exception); assert.True(t, ok) {
assert.Equal(t, int32(60), exception.Code)
}
}
}
if assert.Equal(t, int(10), count) {
if assert.NoError(t, tx.Commit()) {
assert.NoError(t, connect.Close())
}
}
}
}
}
}
}
}
func Test_Enum(t *testing.T) {
const (
ddl = `
CREATE TABLE clickhouse_test_enum (
enum8 Enum8 ('a' = 1, 'b' = 2),
enum16 Enum16('c' = 1, 'd' = 2),
arr_enum8 Array(Enum8 ('a' = 1, 'b' = 2)),
arr_enum16 Array(Enum16('c' = 1, 'd' = 2))
) Engine=Memory
`
dml = `INSERT INTO clickhouse_test_enum VALUES (?, ?, ?, ?)`
)
if connect, err := sql.Open("clickhouse", "tcp://127.0.0.1:9000?debug=true"); assert.NoError(t, err) && assert.NoError(t, connect.Ping()) {
if _, err := connect.Exec("DROP TABLE IF EXISTS clickhouse_test_enum"); assert.NoError(t, err) {
if _, err := connect.Exec(ddl); assert.NoError(t, err) {
if tx, err := connect.Begin(); assert.NoError(t, err) {
if stmt, err := tx.Prepare(dml); assert.NoError(t, err) {
if _, err := stmt.Exec("a", "c", clickhouse.Array([]string{"a", "b"}), clickhouse.Array([]string{"c", "d"})); !assert.NoError(t, err) {
return
}
if _, err := stmt.Exec("b", "d", clickhouse.Array([]string{"b", "a"}), clickhouse.Array([]string{"d", "c"})); !assert.NoError(t, err) {
return
}
}
if err := tx.Commit(); !assert.NoError(t, err) {
return
}
}
}
}
if rows, err := connect.Query("SELECT enum8, enum16, arr_enum8, arr_enum16 FROM clickhouse_test_enum"); assert.NoError(t, err) {
for rows.Next() {
var (
a, b string
c, d []string
)
if err := rows.Scan(&a, &b, &c, &d); assert.NoError(t, err) {
t.Log(a, b, c, d)
}
}
}
}
}