Snow white, beautifully stark cluster of Calcite rhombic crystals from 3mm to 25mm. Click thumbnail images for larger view. Calcite from Charcas, San Luis Potosi, Mexico Groups of discoidal crystals once called "Poker-Chip" Calcite. The largest crystal ti 5cm across and all the larger crystals...
[CALCITE-5619] Add TO_CHAR(<TIMESTAMP>, <STRING>) function (enabled i…bom [CALCITE-5417] Upgrade Proj4J from 1.1.5 to 1.2.2, and restore it as …buildSrc [CALCITE-5440] Bump gradle from 7.4.2 to 7.6.1 cassandra [CALCITE-5546] Code style: Break long assignment expressions after ...
onMatch方法创了一个新的表达式并且执行RelOptRuleCall.transformTo()这个方法来通知规则执行成功。 查询优化流程 关于Calcite的查询计划有多智能有很多可以说的,但我们在这里不会讨论这个问题。最聪明的做法是为执行器规划的作者减轻负担(The cleverness is designed to take the burden off you, the writer of planne...
Go to download Show more of this groupShow more artifacts with this name Show all versions of calcite-coreShow documentation Core Calcite APIs and engine. There is a newer version: 1.37.0 Show newest version Maven Gradle Ivy SBT <dependency> <groupId>o...
" + + "CHAR_OCTET_LENGTH=-1; ORDINAL_POSITION=1; IS_NULLABLE=NO; " + + "SCOPE_CATALOG=null; SCOPE_SCHEMA=null; SCOPE_TABLE=null; " + + "SOURCE_DATA_TYPE=null; IS_AUTOINCREMENT=; " + + "IS_GENERATEDCOLUMN=")); + } + + /** Checks that the default {@code getTables()} ...
这是一个手把手并循序渐进的教程,展示了如何和Calcite建立连接。它使用了一个简单的适配器,使得一个包含了csv文件的目录看起来是一个包含数据库表的模式(schema)。Calcite负责其他工作,并提供了一个完整的SQL接口。 Calcite-example-CSV是Calcite的一个全功能适配器,可以读取CSV(逗号分割的值)格式的文本文件。值得注...
builder.add("COMPANY",newBasicSqlType(newRelDataTypeSystemImpl() {}, SqlTypeName.CHAR));returnbuilder.build(); } }); Step1: SQL 解析阶段(SQL–>SqlNode) 使用Calcite 进行 Sql 解析的代码如下: SqlParser parser =SqlParser.create(sql, SqlParser.Config.DEFAULT); ...
SELECT TO_CHAR(CURRENT_DATE, 'YYYY-MM-DD') AS formattedDate; 7. Casting Date Values in Calcite: In some cases, we may need to cast a date value to a different data type.Calcite allows us to do this using the CAST function. For example, to cast a date value to a TIMESTAMP data ...
This flexible, embeddable, and extensible architectureis what makes Calcite an attractive choice for adoption in bigdata frameworks. It is an active project that continues to introduce support for the new types of data sources, query languages, and approaches to query processing and optimization. ...
> conversion expects the child to be a SqlIdentifier. But a SqlBasicCall is > returned. > Script > {code:java} > A = LOAD 'scott.DEPT' as (DEPTNO:int, DNAME:chararray, LOC:CHARARRAY); > B = FOREACH A GENERATE FLATTEN(STRSPLIT(DNAME, ',')) as NAMES; ...