QuestDB

Var _jq = []; var $ = function(fn) { _jq.push(fn); }; --> Support Ukraine in Her Fight for Freedom! --> Accessing the QuestDB database can be fast and seamless by using the Open Database Connectivity (ODBC) solution. Providing full interoperability, the ODBC driver for QuestDB allows you to access live QuestDB data directly from DBArtisan. It enables you to retrieve data to DBArtisan, and review and modify these data right in this application.QuestDB Key FeaturesOpen sourceLow memory leakage problemSupport for multiple table typesPlatform IndependentDBArtisan Key Features Database administrationSQL development and debuggingSchema comparison and synchronizationPerformance monitoring and tuningDirect ConnectionOur data connector enables various ODBC-aware applications to establish a direct connection to QuestDB via TCP/IP to eliminate the need for a QuestDB client. A direct connection increases the speed of data transmission between DBArtisan and QuestDB for real-time analytics. It streamlines the deployment process since there is no need to distribute any additional client-side software with the ODBC driver for QuestDB.What are some reasons to choose Devart ODBC Driver for QuestDB?IntegrationODBC Driver for QuestDB is compatible with DBArtisan allowing extraction of data by executing SQL statements.Platforms VarietyODBC Driver for QuestDB can be used with 32-bit and 64-bit applications on both x32 and x64 platforms, so there is no need to additionally configure the driver, applications, or environment.Fully Unicode-Compliant DriverWith our fully Unicode-compliant driver, you can properly retrieve and modify any data in multilingual QuestDB databases, regardless of their character set: Latin, Cyrillic, Hebrew, Chinese, etc., and in any language environment.How to download,

Following commands.To install the devartodbcquestdb_i386.deb on a 32-bit system, use:use sudo dpkg -i devartodbcquestdb_i386.debTo install the devartodbcquestdb_amd64.deb on a 64-bit system, use:sudo dpkg -i devartodbcquestdb_amd64.debFor more detailed information about installing and configuring ODBC Driver for QuestDB on Ubuntu, go to the documentation.To install the devart-odbc-questdb.i386.rpm on a 32-bit system, use:sudo -rpm -ivh devart-odbc-questdb.i386.rpmTo install the devart-odbc-questdb.x86_64.rpm on a 64-bit system, use:sudo rpm -ivh devart-odbc-questdb.x86_64.rpmFor more detailed information about installing and configuring ODBC Driver for QuestDB on Centos, go to the documentation.Connect DBArtisan to QuestDB data source and access data in 3 simple steps01. Install the driver and configure the ODBC data source. Start DBArtisan and in the tab panel select Datasource > dfRegister Datasource.02. In the appeared window, select Generic ODBC. Then, enter connection information in each step by clicking Next. In the end, click Finish.03.In the Datasource Navigator, double-click the needed database, and select Tables. Right-click the table and select Schema to view the data.Advantages of Connectivity to QuestDB from DBArtisan via ODBC DriverSecure ConnectionEvery operation with QuestDB becomes significantly faster using such capabilities of ourdriver as local data caching, connection pooling, and much more.Working with DBArtisan using Multiple FunctionsUsing DBArtisan, you can create tables, add data, select, delete, sort, edit, combine data from several database tables, and find unique values quickly and easily.ODBC ConformanceThe driver fully supports the ODBC interface, its data types, and functions. It offers advanced connection string parameters and allows any ODBC-compliant desktop or web application to connect to QuestDB from DBArtisan on various platforms.Simple

QuestDB time zone database uses the English locale but supportfor additional locales may be added in future. Referring to time zones which areoutdated or not recognized results in a invalid timezone name error. Thefollowing resources may be used for hints how to refer to time zones by ID oroffset:The official list maintained by IANAJava'sgetAvailableZoneIdsmethodWiki entry on tz database time zones(this is a convenient reference, but may not be 100% accurate)noteUsers should be aware that the time zone database contains both current andhistoric transitions for various time zones. Therefore time zone conversionsmust take the historic time zone transitions into account based on the timestampvalues.Updates to the time zone database​The upstream project updates past time zones as new information becomesavailable. These changes are typically related to daylight saving time (DST)start and end date transitions and, on rare occasions, time zone name changes.The tz database version used by QuestDB is determined by the JDK version used atbuild time and therefore updates to the time zone database are directlyinfluenced by this JDK version. To find the JDK version used by a QuestDB build,run the following SQL:buildBuild Information: QuestDB 7.4.0, JDK 11.0.8, Commit Hash b9776a8a09f7db35955530bff64de488a029f1ceConverting timestamps to and from time zones​For convenience, QuestDB includes two functions for time zone conversions ontimestamp values.to_timezone()to_utc()These functions are used to convert a Unix timestamp, or a string equivalentcast to timestamp as follows:SELECT to_timezone(1623167145000000, 'Europe/Berlin');to_timezone2021-06-08T17:45:45.000000ZSELECT to_utc(1623167145000000, 'Europe/Berlin');to_utc2021-06-08T13:45:45.000000ZUsing UTC offset for conversions​The to_timezone() andto_utc() functions may use UTCoffset for converting timestamp values. In some cases, this can be more reliablethan string or time zone ID conversion given historic changes to time zone namesor transitions. The following example takes a Unix timestamp in microseconds andconverts it to a time zone +2 hours offset from UTC:SELECT to_timezone(1213086329000000, '+02:00');to_timezone2008-06-10T10:25:29.000000ZSELECT to_utc('2008-06-10T10:25:29.000000Z', '+02:00');to_timezone2008-06-10T08:25:29.000000Z

High performanceLow-latencySIMD-optimized queriesIngest 4M rows/s per nodeSee benchmarksFor developersOpen sourceFastest growing TSDBSQL & PGwire compatibleSee live demoOpen formatsHistorical data in ParquetMultiple availability zonesDecouple storage/computeSee EnterpriseQuestDB leaps your team forwardLeadership through open formatsGlobally distributed, hyper-fast next generation databaseOpen formatsLeverages existing open formats. No vendor lock-in.Apache ParquetEnhanced compression and encoding, for ingress or egress.Super read/writeFast ingest and low latency SQL queriesFull streamStream market data in from feeds or sensors, apply Parquet on readDirect to Parquet?Bypass QuestDB ingest, query Parquet directly from the object storeVersatile ecosystemDiverse clients connect to your data, app, AI and ML frameworksUse QuestDB with the tools you loveSimple, high performance SQLEasily adopted, time-series optimized SQLArrow up iconSELECT timestamp, symbol, priceFROM tradesWHERE timestamp IN '2024-06-21;1M';SELECT timestamp, symbol, priceFROM tradesWHERE timestamp IN '2024-06-21;1M';SELECT timestamp, symbol, avg(price)FROM tradesSAMPLE BY 5m FILL(LINEAR);SELECT timestamp, symbol, avg(price)FROM tradesSAMPLE BY 5m FILL(LINEAR);SELECT timestamp, symbol, priceFROM tradesLATEST ON timestamp PARTITION BY symbol;SELECT timestamp, symbol, priceFROM tradesLATEST ON timestamp PARTITION BY symbol;SELECT timestamp, bid_price, ask_priceFROM bidsASOF JOIN asks;SELECT timestamp, bid_price, ask_priceFROM bidsASOF JOIN asks;Arrow up iconFilter and search for specific timestamps with "WHERE"Create time buckets and aggregate by intervals with "SAMPLE BY"Search time series from most recent values to oldest with "LATEST ON"Join two tables based on timestamp where timestamps do not exactly match with "ASOF JOIN"Community love for QuestDBCategory user reviews on G2 rate QuestDB with the highest user satisfaction. Visit our vibrant Slack to chat with the community, the QuestDB core developers, and our technical AI-bot, to find out why.QuestDB is a time series database truly built by developers for developers. We found that QuestDB provides a unicorn solution to handle extreme TPS while also offering a simplified SQL programming interface.The next generation has arrivedUpgrade to QuestDBHyper ingestion, millisecond queries, and powerful SQL.Lower bills through peak efficiency.

When working with timestamped data, it may be necessary to convert timestampvalues to or from UTC, or to offset timestamp values by a fixed duration. Thefollowing sections describe how QuestDB handles timestamps natively, how to usebuilt-in functions for working with time zone conversions, and general hints forworking with time zones in QuestDB.Timestamps in QuestDB​The native timestamp format used by QuestDB is a Unix timestamp in microsecondresolution. Although timestamps in nanoseconds will be parsed, the output willbe truncated to microseconds. QuestDB does not store time zone informationalongside timestamp values and therefore it should be assumed that alltimestamps are in UTC.The following example shows how a Unix timestamp in microseconds may be passedinto a timestamp column directly:CREATE TABLE my_table (ts timestamp, col1 int) timestamp(ts);INSERT INTO my_table VALUES(1623167145123456, 12);my_table;tscol12021-06-08T15:45:45.123456Z12Timestamps may also be inserted as strings in the following way:INSERT INTO my_table VALUES('2021-06-08T16:45:45.123456Z', 13);my_table;tscol12021-06-08T15:45:45.123456Z122021-06-08T16:45:45.123456Z13When inserting timestamps into a table, it is also possible to usetimestamp unitsto define the timestamp format, in order to process trailing zeros in exporteddata sources such as PostgreSQL:INSERT INTO my_table VALUES(to_timestamp('2021-06-09T16:45:46.123456789', 'yyyy-MM-ddTHH:mm:ss.N+'), 14);-- Passing 9-digit nanosecond into QuestDB, this is equal to:INSERT INTO my_table VALUES(to_timestamp('2021-06-10T16:45:46.123456789', 'yyyy-MM-ddTHH:mm:ss.SSSUUUN'), 14);my_table;The output maintains microsecond resolution:tscol12021-06-08T15:45:45.123456Z122021-06-08T16:45:45.123456Z132021-06-09T16:45:46.123456Z14QuestDB's internal time zone database​In order to simplify working with time zones, QuestDB usesthe tz time zone database which isstandard in the Java ecosystem. This time zone database is used internally intime zone lookup and in operations relating to timestamp value conversion to andfrom time zones.For this reason, a time zone may be referenced by abbreviated name, by full timezone name or by UTC offset:AbbreviationTime zone nameUTC offsetESTAmerica/New_York-05:00Referring to time zones​It's strongly advised not to use the three-letter ID or abbreviation fortime zones for the following reason:The same abbreviation is often used for multiple time zones (for example,"CST" could be U.S. "Central Standard Time" and "China Standard Time"), andthe Java platform can then only recognize one of themTherefore, choosing a geographic region which observes a time zone("America/New_York", "Europe/Prague") or a UTC offset value ("+02:00") ismore reliable when referring to time zones. Instructions for converting to andfrom time zones are described in theConverting timestamps to and from time zonessection below.The current