到：https://download.quasar.ai/quasardb/3.9/3.9.9/server/
下载最新版： https://download.quasar.ai/quasardb/3.9/3.9.9/server/qdb-3.9.9-windows-64bit-setup.exe
然后安装，记得先不勾选安全连接。安装成功以后，自己去操作下：
>"C:\Program Files\quasardb\bin\qdbsh.exe"
quasardb shell version 3.9.9 build fc2829ecc 2021-07-01 09:13:49 +0200
Copyright (c) 2009-2021, quasardb SAS. All rights reserved.
Need some help? Check out our documentation here: https://doc.quasardb.net
qdbsh > CREATE TABLE stocks (close DOUBLE)
qdbsh > INSERT INTO stocks ($timestamp, close) VALUES (2017-01-01, 1.0), (2017-01-02, 2.0), (2017-01-03, 3.0)
qdbsh > select * from stocks in range(2017-01-01, 2017-01-10)
$timestamp $table close
---------------------------------------------------------
2017-01-01T00:00:00.000000000Z stocks 1
2017-01-02T00:00:00.000000000Z stocks 2
2017-01-03T00:00:00.000000000Z stocks 3
Returned 3 rows in 6,441 us
Scanned 3 points in 6,441 us (465 rows/sec)
qdbsh > show stocks
Shard size: 86400000 ms
2 columns
0. timestamp index
1. close - double (0)
为了使用C api操作数据：
需要先下载api：
https://download.quasar.ai/quasardb/3.9/3.9.9/api/c/
操作代码：
#pragma comment(lib, "D:\\source\\qdb-3.9.9-windows-64bit-c-api\\lib\\qdb_api.lib")
#include <qdb/client.h>
#include <qdb/tag.h>
#include <qdb/ts.h>
#include <stdio.h>
#define EXIT_FAILURE 1
int main() {
// We first need to open a handle, which is is the memory structure that
// QuasarDB uses to maintain connection state.
qdb_handle_t handle;
qdb_error_t error = qdb_open(&handle, qdb_p_tcp);
if (QDB_FAILURE(error)) return EXIT_FAILURE;
// Now that we have opened the handle, we can tell it to establish a connection
// with the cluster.
error = qdb_connect(handle, "qdb://127.0.0.1:2836");
if (QDB_FAILURE(error)) {
printf("Connect db failed!Error code:%d\n", error);
return EXIT_FAILURE;
}
// Initialize our columns definitions
const qdb_ts_column_info_t columns[3] = {
{.name = "open",.type = qdb_ts_column_double}, //
{.name = "close",.type = qdb_ts_column_double}, //
{.name = "volume",.type = qdb_ts_column_int64} //
};
const int columns_count = sizeof(columns) / sizeof(qdb_ts_column_info_t);
// Now create the table with the default shard size
qdb_error_t error2 = qdb_ts_create(handle, "stocks4test", qdb_d_default_shard_size, columns, columns_count);
if (QDB_FAILURE(error2)) {
printf("Insert data failed! Error code: %d\n", error2);
return EXIT_FAILURE;
}
printf("Insert data success!\n");
}
可以看到操作成功！
qdbsh > show stocks4test
Shard size: 86400000 ms
4 columns
0. timestamp index
1. open - double (0)
2. close - double (1)
3. volume - int64 (2)
