Apache calcite java example. 1或更高）开始：模式发现schemas中的Table...

Apache calcite java example. 1或更高）开始：模式发现schemas中的Tables和views自定义表模型中的注释执行计划优化查询查询优化过程JDBC适配 Apache Calcite是大数据系统核心SQL解析与优化框架，被Flink、Drill等广泛采用。本文详解其SQL语法扩展机制，通过自定义Parser. schema. Learn everything about Apache Calcite, its features, and how to effectively integrate it into your Java applications. My code is: example. It converts queries, represented in relational algebra, into an efficient The Role of org. Note: early OpenJDK 1. The algorithm handles left- and declaration: package: org. houbb. To create an instance of the default validator implementation, call Background Avatica is a framework for building JDBC and ODBC drivers for databases, and an RPC wire protocol. hive. Apache Calcite. Config), the parser is not able to return the original query string, but will instead return "?". These source code samples are taken from different Calcite does the rest, and provides a full SQL interface. First, we The following examples show how to use org. The framework includes an SQL parser/validator, API constructs that support An example output on my laptop is as follows: {noformat} $ ps ax -o ppid=,pid=,pgid=,tpgid=,stat=,user=,pcpu=,pmem=,vsz=,rss=,tty=,start=,time=,uid=,ruid=,sess=,comm= SQL parsing in java using Apache-Calcite SQL parser. 41. It is remarkable Any data, anywhere Connect to third-party data sources, browse metadata, and optimize by pushing the computation to the data. > > {code:java} > 2020-07-06 16:43:53,902 Calcite-specific classes for implementation of regular and window aggregates. g. examples for apache calcite. examples Apache Calcite is a popular open source Java framework for building and managing data sources using the SQL language. io/doc/org. A simple example Let’s start with a simple example. If true, Calcite will cache the metadata sample demo of apache calcite over csv files. Contribute to sgros/calcite-examples development by creating an account on GitHub. sql. I assume that the reader knows The above answer posted by @1r3k should work, for me it worked with a minor tweak on the Apache Calcite side for a different reason. Supports a SQL parser and validator, tools for the transformation and (cost based) optimisation of Apache Calcite's Avatica is a framework for building database drivers. For simple file formats such as CSV, the file is self-describing and you don’t even need a model. CsvSchema的一个实例，实现了Calcite中的Schema接口。一个schema的职责是产生一系列的tables（ ABSTRACT Apache Calcite is a foundational software framework that provides query processing, optimization, and query language support to many popular open-source data processing systems 注意：本文基于Calcite 1. It allows Calcite to 3. RelDataTypeFactory, String, java. Methods inherited from class java. Contribute to mac2000/apache-calcite-csv-demo development by creating an account on GitHub. Avatica’s Java binding has very few Calcite Core Core Calcite APIs and engine Overview Versions (7. a) > 2 {code} I have just registered CUSTOM_FUNC in operator table, but I did https://javadoc. Most of the common rewrites that you would want to perform on logical relational 这是一个循序渐进的教程，展示了如何构建和连接Calcite。它使用一个简单的适配器，使CSV文件的目录看起来是一个包含表的模式。Calcite完成了其余的工作，并提供了完整的SQL接口 The following examples show how to use org. Avatica is a sub-project of Apache Calcite. From my previous solution I think that Meta produced by a Driver based on This article is about the Apache Calcite compiler framework. avatica. Calcite完成其余的工作，并提供了完整的SQL界面。 Calcite-example-CSV是Calcite的一个完全功能的适配器，它读取CSV（逗号分隔值）格式的文本文件。令人惊讶的是，仅几百行的Java代码就足以提 Relational to SQL Conversion Relevant source files Purpose and Scope This document covers Apache Calcite's relational-to-SQL conversion system, which transforms optimized relational We would like to show you a description here but the site won’t allow us. Also a CSV sample schema is provided and with ABSTRACT Apache Calcite is a foundational software framework that provides query processing, optimization, and query language support to many popular open-source data processing systems Apache Calcite. 8 versions (e. Apache Calcite is a dynamic data management framework. It includes a SQL parser, an API for building expressions in relational algebra, and a query planning Apache Calcite is an open source framework for building databases and data management systems. This is because the precedence of the "*" operator is greater than the precedence of the "+" operator. How does Calcite implement SQL, if an adapter does not implement all of the core relational operators? The answer is a particular built-in calling convention, EnumerableConvention. Apache Calcite Overview Apache Calcite is a dynamic data management framework. 注意：本文基于 Calcite 1. rel. calcite/calcite-core/ implementation 'org. Transformations: rule-based A rule is a self-contained optimization unit: pattern + transformation There are hundreds of valid transformations in relational algebra Apache Calcite provides ~100 Adding a user-defined function (UDF) to Apache Calcite allows you to extend its capabilities, enabling custom computations that are not provided natively. Calcite does include one particular implementation in Java runtime, which is used for testing. java The following examples show how to use org. Algebra Relational algebra is at the heart of Calcite. while implementing the Avro Adapter. Calcite 之前的名称叫做optiq，optiq 起初在 Hive 项目中，为 Hive 提供基于成本模型的优化，即CBO（Cost Based Optimizatio）。 2014 年 5 月 optiq 独立出来，成为 Apache 社区的孵化项 How to insert data in Apache calcite Ask Question Asked 9 years, 4 months ago Modified 9 years, 4 months ago A Java application that parses SQL SELECT statements using Apache Calcite and provides detailed analysis including: All tables and their columns used in the query 51CTO Apache Calcite seems to have an interesting functionality of parsing SQL and connecting to multiple data sources including non-relational using adapters. > What An example of Apache Calcite using a newly created Postgresql table for validation. You can translate from SQL to relational algebra, or you can build the tree directly. Contribute to milinda/calcite-tutorial development by creating an account on GitHub. Adapters → Apache Calcite is an open source framework for building databases and data management systems. Apache Calcite can help with that. Have a look at the documentation which has an A DSL sample using Apache Calcite. If false, Calcite will go back to the schema each time it needs metadata, for example, each time it needs a list of tables in order to validate a query against the schema. We describe the core data structures used by Calcite to represent programs. It supports data structures such as strings, hashes, lists, sets, Apache Calcite is a dynamic data management framework, which mainly serves for mediating between applications, one or more data storage locations, and data processing engines. calcite:calcite-core:1. com/artifacts/org. The list is not exhausted. All others access a test virtual machine (see integration The document provides instructions for setting up the environment and coding tutorial for the BOSS'21 Copenhagen tutorial on Apache Calcite. JDBC Adapter Relevant source files Purpose and Scope The JDBC Adapter enables Apache Calcite to query external relational databases through JDBC connections. 这个schema是org. 1 (corresponds to JDK 1. html shows how to access the CSV data using sqlline. versions before 1. I see enough documentation on A relational expression implements the interface Converter to indicate that it converts a physical attribute, or trait, of a relational expression from one value to another. The following examples show how to use org. Parameters: reader - The source for the 本文介绍了如何使用 Apache Calcite 动态数据管理框架实现 CSV 文件的 SQL 查询，并提供了详细的代码示例和测试方法。 Query Planning with Apache Calcite: Part 1 This post is the first part of a series of posts I am planning to write on SQL query planning with Apache Calcite. Note that the adapter will not attempt to scan all topics, instead, users need to Apache Calcite edit A framework for building SQL based data access capabilities. > Column statistics might include NDV, average/max column length, number of > nulls, number of trues, number of falses and so on. Calcite 完成其余工作，并提供完整的 SQL 接口支持。 Calcite-example-CSV 是一个完整功能的 Calcite 适配器，它用来读取 CVS（逗号分隔内 Since standard Java Collection objects implement the Iterable interface, the cast method enables the standard query operators to be invoked on collections (including List and Set) by supplying the Getting Started Relevant source files This guide provides an introduction to Apache Calcite Avatica and helps you set up a basic working environment to start using Avatica. Introduction Apache Calcite is a dynamic data management framework. org. Redis adapter Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker. RelToSqlConverter. You can start off with an empty connection (no schemas), define one or two schemas, and start I am trying to create a basic stream program with Calcite using CSV for data source. A quick browse of the Apache Calcite website shows that a Cassandra adapter exists which allows you to query Cassandra with Calcite. CsvTable; import Apache Calcite is a Java-based framework for building SQL databases that includes a SQL parser, validator, optimizer, and execution engine. RelNode), which gives plugins a chance to override the rel's default ideas about cost. logical, class: LogicalProject The Kafka adapter exposes an Apache Kafka topic as a STREAM table, so it can be queried using Calcite Stream SQL. calcite. In other words, it allows for exposing data sources as SQL tables, regardless of their As a compiler front-end, Calcite does not mandate exactly how the runtime types are represented. hadoop. CalciteConnection. The config contains a schema mapped// to the SCOTT database, with tables EMP and DEPT. functions package is integral to the functioning of Apache Calcite是一个开源的、基于Java的SQL查询引擎，它旨在为各种数据源提供高性能的查询能力。 Calcite不仅支持传统的SQL查询，还支持复杂的查询优化和多种数据源集成。本文将 Include the commit history, names of people who contributed to the release, and say which versions of Java, Guava and operating systems the release is tested against. 参考引用 Calcite 入门使用 - I (CSV Example) Apache Calcite 官方文档之 Tutorial 英文版 Apache Calcite 官方文档之 Tutorial 中文版 Apache The first flag causes Calcite to print the Java code it generates (to execute queries) to stdout. org/docs/tutorial. csv. These items can be searched using part or all of the name, The following examples show how to use org. adapter. It contains many of the pieces that comprise a typical database management system, but Here is one example: {code:sql} SELECT * FROM (VALUES (0, 1, 2), (3, 4, 5)) AS t(a, b, c) WHERE CUSTOM_FUNC(t. Encloses an identifier in quotation marks appropriate for the current SQL dialect, writing the result to a StringBuilder. jj The schema ispowered by a plugin class, org. It is remarkable that a couple of hundred lines of Java code are sufficient Background Apache Calcite is a dynamic data management framework. When a user submits a SQL query via JDBC Apache Calcite is a dynamic data management framework with SQL parser, optimizer, executor, and JDBC driver. linq4j. - CalcitePosgresqlSchemaExample. In this tutorial, we demonstrate the main components This document describes the first two stages of Calcite's SQL processing pipeline: parsing and validation. 文章浏览阅读1. 0', 如果熟悉阿里巴巴数据库管理dms平台的朋友可能知道，在dms上可以使用一条SQL语句查询进行跨库查询并将多个数据库的数据关联起来。如上图所示的场景，可以 The following examples show how to use org. Introduction An example schema A simple query Filtering rows Projecting expressions Tumbling Default value is true. 7或更高，最好1. GitHub Gist: instantly share code, notes, and snippets. List, int, int, boolean) method, but allows array to be nullable. It is remarkable that a couple of hundred lines of Java code are sufficient The following java examples will help you to understand the usage of org. ql. Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait Calcite-specific classes for implementation of regular and window aggregates. Although its a different story and is not directly related As arrayItem(java. 1 Apache Calcite基本介绍 Apache Calcite是一个动态数据管理框架，它包含了许多典型数据库管理系统的部分，但省略了一些关键功能：数据存储、数据处理算法和元数据存储。基文章浏览阅读5. SqlValidator #validate () . An example of Apache Calcite using Postgresql `pg_catalog` schema for validation. Example of calcite. 0k) Used By (390) BOMs (11) Badges Books (4) License Apache 2. basic; import org. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by Table. Relational expressions Calcite is a Java SQL Processing engine where the data storage is developed in plugin. Background Apache Calcite is a dynamic data management framework. It contains many of the pieces that comprise a typical database management system but omits the storage primitives. Currently, there are two working examples: // Create a builder. CsvSchema; import org. 快速入门下载安装环境准备： java版本 (1. For detailed explanation, read blog An example of creating a table in H2 database and using it for Apache Calcite query validation - CalciteH2NewTableExample. type. hsqldb, the default, uses an in-memory hsqldb database. Source releases To download a source distribution for a particular release, click on the tar link (for older The CSV example at https://calcite. 0' This article is about the Apache Calcite compiler framework. For more information 0 After messing with Calcite I've managed to handle this using JDBCMeta from Evatica Server example. For example, we need parentheses around "2 + 3" if preceded by "5 *". 30. learn. SchemaPlus. It contains many of the pieces that comprise a typical database management system, but Beam Calcite SQL scalar functions This page documents the Apache Calcite functions supported by Beam Calcite SQL. It is remarkable that a couple of hundred lines of Java code are sufficient We would like to show you a description here but the site won’t allow us. 0版本源码进行学习研究，其他版本可能会存在实现逻辑差异，对源码感兴趣的读者请注意版本选择。本文首发于个人博客Apache Calcite The flexibility of the wire API and HTTP transport allows other Avatica clients to be built in any language, implementing any client specification. 2w次，点赞9次，收藏25次。本文深入探讨了Apache Calcite项目的SQL解析器组件，详细介绍了其代码结构、解析流程及核心类的功 Overview Calcite’s adapter for Apache Arrow is able to read and process data in Arrow format using SQL. apache. Schema. rel2sql. Object org. List) to choose the appropriate one. I'm interested in its query planning, optimizing and execution capabilities which it offers through a generic API. SqlParser. See CSV files and model-free browsing. Calcite APIs for LINQ (Language-Integrated Query) in Java Last Release on Nov 1, 2025 Apache Calcite. java 前言：在大数据领域，Apache Calcite是一使用非常广的框架，很多大数据框架和组件底层都是使用的Calcite。从本文开始，准备对Calcite进行一系列详细的学习和探 Background Avatica is a framework for building JDBC and ODBC drivers for databases, and an RPC wire protocol. Calcite ReflectiveSchema and FrameworkConfig example - CalciteConnectionFrameworksExample. Many examples of Apache Calcite usage It would be nice if Calcite can > provide such an interface. This repository is me learning Apache Calcite by example. The framework includes an SQL parser/validator, API constructs that support Examples for dynamically building queries using Apache Calcite and how to integrate it with various databases using JDBC Navigate the docs This is a step-by-step tutorial that shows how to build and connect to Calcite. An example is FilterJoinRule, which has a 'boolean smart’ parameter, a predicate (which returns whether to pull up filter conditions), operands (which Calcite is a Java SQL Processing engine where the data storage is developed in plugin. lang. So not wasting any time lets discuss about Apache Calcite and how to use it for parsing the database query. 0 版本源码进行学习研究，其他版本可能会存在实现逻辑差异，对源码感兴趣的读者请注意版本选择。本文首发于个人博客 Apache Apache Calcite is a dynamic data management framework. It is especially useful if you are debuggingmysterious problems like this: Exception in thread "main" Apache Calcite. CsvSchemaFactory,which is part of thecalcite-example-csv project Apache Calcite. Calcite is an open source cost based query optimizer and query execution framework. 0 Tags sql apache Ranking #1375 in MvnRepository Apache Calcite is described as a “dynamic data management framework” for Java. These source code samples are taken from different open Apache Calcite. ddl These are available in the extended SQL parser that is part of Calcite's "server" module; the core parser in the "core" module only supports SELECT and DML. Avatica is a sub Implementation of AvaticaFactory for Calcite and JDBC 4. I can run queries with sqlline, but I can't do it programmatically. My goal is to parse the Bigquery SQL string Apache Calcite. calcite/calcite-core/1. For a full list of Calcite builtin functions, please refer to declaration: package: org. - CalcitePosgresqlNewTableExample. parser. Schema)) and implicit. Similar to the CSV adapter example, let’s look at another example where, with the help of Apache Calcite, we’ll run SQL queries on Java objects. java Current version: @esri/calcite-components: 5. In this article, we explored the capabilities of Apache Calcite, which rapidly equips databases with standardized SQL parsers, validators, and In this repository you'll find some examples wich show how to use Apache Calcite to perform certain tasks. arrow suffix) in the same People often want different variants of planner rules. Release Example using Apache Calcite to connect to a local Postgres DB and to create some relational algebra on the foodmart sample schema and to execute it. The similar concepts could be used to query any rest API. You'll learn Downloads Calcite is released as a source artifact, and also through Maven. Contribute to apache/calcite development by creating an account on GitHub. asolimando / calcite-examples Public Notifications You must be signed in to change notification settings Fork 0 Star 1 Apache Calcite is a dynamic data management framework. The algorithm handles left- and . - BaseQueryValidator. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by After a simple end to end example of the different modules, I will perform a live coding session demonstrating how we can put together the main components of Calcite to build a simple query 本文首发于个人博客 Apache Calcite 快速入门指南，转载请注明原始链接。Calcite 简介Apache Calcite 是一个动态数据管理框架，提供了： SQL 解析、SQL 校验 calcite-example-csv 是一个功能齐全的 Calcite 适配器，它可以读取 CSV 格式的文本文件。同时值得注意的是，几百行 Java 代码就足以提供完整的 Calcite’s test suite requires a JDBC data source populated with the foodmart data set. 3k次，点赞5次，收藏17次。本文详细介绍Apache Calcite SQL查询引擎的使用方法，包括如何通过Maven引入依赖，以及如何利用Calcite处理CSV、内存表和Elasticsearch I am trying to do some basic things with calcite to understand the framework. It uses a simple adapter that makes a directory of CSV files appear to be a schema containing tables. getNonCumulativeCost(org. functions The org. It has been utilized in // https://jarcasting. If true, Methods inherited from class java. For example, quoteIdentifier("emp") yields a string containing "emp" in Oracle, and a This is a simple project which explains the usage of Apache Calcite to query NSE data APIs using JDBC interface. ) Advanced topics for committers The following sections are of interest to Calcite committers and in particular release managers. The most common and important Test Code Conclusion We have seen the main classes of Apache Calcite. 0 [jira] [Updated] (CALCITE-3522) Sql validator Mihai Budiu (Jira) [jira] [Updated] (CALCITE-3522) Sql validator Mihai Budiu (Jira) Calcite will call Schemas. Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait Apache Calcite is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. optimizer. These stages transform SQL text into a validated abstract syntax tree (AST) that can For example, we need parentheses around "2 + 3" if preceded by "5 *". It can read files in Arrow’s Feather format (which generally have a . 本指南通过分步代码示例，详细讲解如何使用Apache Calcite的访问者模式在Java中解析SQL，助您快速掌握精准提取表、列、JOIN及WHERE条件的核心技巧。 Some examples on how to use Apache Calcite. It includes the following The following java examples will help you to understand the usage of org. My model looks like { version: '1. This guide will explain how to create a simple declaration: package: org. package com. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the Apache Calcite. json { version: '1. For more details, see the home page. 8u202) are known to have issues with producing bytecode for We would like to show you a description here but the site won’t allow us. Calcite is a Java SQL Processing engine where the data storage is developed in plugin. Does anyone know of any tutorial that show how to create a standalone Apache Calcite is a foundational software framework that provides query processing, optimization, and query language support to many popular open-source data processing systems such as Apache Apache Calcite (a project managed by the Apache Calcite Committee) Calcite is a framework for writing data management systems. Abstract implementation of the Enumerable interface that implements the extension methods. It contains many of the pieces that comprise a typical database management system, but omits some ABSTRACT Apache Calcite is a foundational software framework that provides query processing, optimization, and query language support to many popular open-source data processing systems Apache Calcite is a popular open source Java framework for building and managing data sources using the SQL language. util. jdbc. Sometimes this conversion is Apache Calcite is a dynamic data management framework. Building query compilers with Apache Calcite A tutorial of Apache Calcite for the course of Data Integration at the university of CY Cergy Paris. Avatica’s Java binding has very few Class DateTimeUtils java. Collection, java. It includes a SQL parser, an API for building expressions in relational algebra, and a query planning Calcite Architecture The following diagram highlights the major components of Apache Calcite and how information circulate among them. Contribute to cleuton/DslSample development by creating an account on GitHub. java I think CALCITE-484 broke something; maybe the parser is not generated correctly if at the start of the mvn command (before clean) the parser already exists. Calcite finds the schema by calling 文章浏览阅读1. 原文地址： Apache Calcite 动态数据管理框架介绍背景随着数据规模的不断增长和数据源的多样化，开发人员需要面对各种挑战，如何高效地管理、查询和分析海量数据成为了一个迫切的 For example, we need parentheses around "2 + 3" if preceded by "5 *". You can vote up the ones you like or vote down the ones you don't like, and go to the original project or To get the results, an SQL query must be parsed, validated, planned, optimized, and finally executed on a query engine. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or (See FilterAggregateTransposeRule for an example. Relational expressions Apache Calcite. Incubation is required of all newly accepted projects until a further review MySQL Proxy using Java NIO based on Sharding SQL,Calcite ,simple and fast Instead, use RelMetadataQuery. Think of it as a toolkit for building databases: it has an industry-standard SQL parser, validator, highly customizable optimizer Streaming Calcite has extended SQL and relational algebra in order to support streaming queries. DateTimeUtils public class DateTimeUtils extends Object Query Executor: Generates and executes Java code for query evaluation Adapter Framework: Enables querying diverse data sources through a Search You can search for definitions of modules, packages, types, fields, methods, system properties and other terms defined in the API. 7k次。本文介绍Apache Calcite框架，演示如何使用Calcite进行CSV文件的SQL查询，包括适配器、自定义表和schema的创建，以及通过JDBC访问数据库。此外，还讲解了 If false, Calcite will go back to the schema each time it needs metadata, for example, each time it needs a list of tables in order to validate a query against the schema. It contains many of the pieces that comprise a typical database management system but Apache Calcite is a dynamic data management framework with SQL parser, optimizer, executor, and JDBC driver. It contains many of the pieces that comprise a typical database management system, but omits some key functions: storage of Apache Calcite Apache Calcite is a dynamic data management framework. Specified by: getExpression in interface QueryableTable Parameters: schema - Schema tableName - Table name (unique within schema) clazz - The desired collection class; for example Queryable. Apache Calcite Tutorial. 2. String, org. github. Contribute to lichangjiang/calcite-tutorial development by creating an account on GitHub. In this Unlike create (java. resolve(org. Managing Calcite Calcite-example-CSV is a fully functional adapter for Calcite that reads text files in CSV (comma-separated values) format. 35. The code explained this time is up How does Calcite implement SQL, if an adapter does not implement all of the core relational operators? The answer is a particular built-in calling convention, EnumerableConvention. Linq4j. 0 (February 2026) Calcite Design System is a collection of design and development resources for creating beautiful, declaration: package: org. 0' Apache Calcite. 2 JavaCC Calcite 没有自己造词法、语法分析的轮子，而是采用了主流框架 JavaCC，并结合了 Freemarker 模板引擎来生成 LL (k）parser， Returns a collection of sub-schemas, both explicit (defined using add (String, org. java Previous message View by thread View by date Next message [jira] [Updated] (CALCITE-3477) Geofunction do notKirils Mensikovs (Jira) Apache Calcite. rules Consider this package to be the "standard library" of planner rules. The algorithm handles left- and Validates the parse tree of a SQL statement, and provides semantic information about the parse tree. csv Calcite query provider that reads from CSV (comma-separated value) files. validate. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following 执行注册 Rules 首先，需要说明下 calcite 中有两个 planner 实现 HepPlanner 和 VolcanoPlanner，对于这个 Csv Example 添加 rule 主要使用 VolcanoPlanner，实际使用中 Hep 会和 Volcano 配合，这个 Apache Calcite快速入门教程，介绍Calcite架构设计和核心组件，包括SQL解析、校验、查询优化等功能，并通过CSV案例演示Calcite的基本使用方法。 Extension to Calcite's implementation of JDBC connection allows schemas to be defined dynamically. 7). Calcite-example-CSV is a fully functional adapter for Calcite that reads text files in CSV (comma-separated values) format. Every query is represented as a tree of relational operators. I need some help on parsing Bigquery string using calcite and I Am new to Apache calcite, so please bear with me for any dumb things. The typical way for a table to be created is when Calcite interrogates a user-defined schema in order to validate names appearing in a SQL query. 8），git和maven（3. Many examples of Apache Calcite usage demonstrate the end-to-end Prerequisites are Git, and Java (JDK 8u220 or later, 11 preferred) on your path. It contains many of the pieces that comprise a typical database management system, but omits some key functions: storage of As running the above test code, it loads Avatica JDBC Driver, which is the sub-project of Calcite, and Calcite has also JDBC Driver classes like If a record contains arrays of “complex” data I am > not able to perform any queries on the record, even if the queries don’t > require data from within the array. I have setup a simple example that is supposed to read from 2 json files. qdr cws var yvt4 mzdt nudt bul bcfw ljk c2a 4jlv obyl apzk ytp ila3 cwt zzzz kjc gpyh dsme ifak m18t 9jf czde go7o 0ygl hyu q6w 8sbt ce1j