time that required to create a new connection. JNDI − For the dataSource type JNDI, MyBatis will get the connection from the JNDI dataSource. Here is how you can use an environment tag in practice − } You can define methods to set individual fields in the table. The next chapter explains how to get the values of individual fields. Student.xml File To define SQL mapping statement using MyBatis, mybatisInsert.java as shown above and compile it. Execute mybatisInsert binary to run the program. You would get the following result, and a record would be created in the STUDENT table. $java mybatisInsert Record

configura‐ tion, slice and runtime information. Through methods such as getShardingTotalCount(), get- ShardingItem(), user can obtain the total number of shards, the serial number of the shards running List data = // get data from database by sharding item 0 return data; case 1: List data = // get data from database by sharding item 1 return data; case 2: List data = // get data from database sources and other objects that managed by the Spring container in their jobs, and use placeholders to get values from property files. Job Configuration 0 码力 | 101 页 | 1.53 MB | 1 年前

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flexibility. • Hint Sharding Strategy HintShardingStrategy refers to the sharding strategy which get sharding values by hint rather than extracted from SQL. • None sharding strategy NoneShardingStrategy ere-sql-parser-mysql ${project.version} demo: • Get AST /** * databaseType type:String values: MySQL,Oracle,PostgreSQL,SQL92,SQLServer * sql type:String @return parse tree */ ParseTree tree = new SQLParserEngine(databaseType).parse(sql, useCache) • GET SQLStatement /** * databaseType type:String values: MySQL,Oracle，PostgreSQL，SQL92，SQLServer * useCache

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Roadmap 12 6 Get Involved 13 7 Quick Start 14 7.1 ShardingSphere‐JDBC . . . . . . . . . . . . . . . . . . . . . . when dropping a data source using DistSQL? . . . . . . . 552 13.5.3 DistSQL How to solve Failed to get driver instance for jd- bcURL=xxx. exception when adding a data source using DistSQL? . . . . . . Updating metadata through one instance causes inconsistencies in other instances because they cannot get the latest metadata. It is ideal for engineers to build a ShardingSphere environment locally. 4.2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Roadmap 12 6 Get Involved 13 7 Quick Start 14 7.1 ShardingSphere‐JDBC . . . . . . . . . . . . . . . . . . . . . . when dropping a data source using DistSQL? . . . . . . . 582 13.5.3 DistSQL How to solve Failed to get driver instance for jd- bcURL=xxx. exception when adding a data source using DistSQL? . . . . . . Updating metadata through one instance causes inconsistencies in other instances because they cannot get the latest metadata. It is ideal for engineers to build a ShardingSphere environment locally. 4.2

ShardingSphere‐Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2.1 Get ShardingSphere‐Proxy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2.2 Rule Configuration exception when dropping a data source using DistSQL? . . . 363 7.8.20 [DistSQL] How to solve Failed to get driver instance for jd- bcURL=xxx. exception when adding a data source using DistSQL? . . . . . . TF-8 username: root password: rules: sharding: tables: ... 2.2 ShardingSphere-Proxy 2.2.1 Get ShardingSphere-Proxy ShardingSphere‐Proxy is available at: ‐ Binary Distribution ‐ Docker ‐ Helm

exception when dropping a data source using DistSQL? . . . 351 7.8.20 [DistSQL] How to solve Failed to get driver instance for jd- bcURL=xxx. exception when adding a data source using DistSQL? . . . . . . completion of table and column names You can turn off this feature to get a quicker startup with -A │You can turn off this feature to get a quicker startup with -A │ Database changed │Database changed : none: defaultKeyGenerateStrategy: type: SNOWFLAKE column: order_id props: sql-show: true Get HintManager HintManager hintManager = HintManager.getInstance(); Add Sharding Value • Use hintManager

Roadmap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.6 Get Involved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 Quick exception when dropping a data source using DistSQL? . . . 499 8.5.3 DistSQL How to solve Failed to get driver instance for jd- bcURL=xxx. exception when adding a data source using DistSQL? . . . . . . Updating metadata through one instance causes inconsistencies in other instances because they cannot get the latest metadata. It is ideal for engineers to build a ShardingSphere environment locally. 1.4

order_id props: sql-show: true 5.1. ShardingSphere-JDBC 78 Apache ShardingSphere document, v5.0.0 Get HintManager HintManager hintManager = HintManager.getInstance(); Add Sharding Value • Use hintManager ShardingSphere-JDBC 79 Apache ShardingSphere document, v5.0.0 } } } Primary Route with Hint Get HintManager Be the same as sharding based on hint. Configure Primary Database Route • Use hintManager ShardingSphere‐Proxy. 2. If users use docker, they can execute docker pull shardingsphere/ shardingsphere-proxy to get the image. Please refer to Docker Image for more details. 3. After the decompression, revise conf/server

exception when dropping a data source using DistSQL? . . . 460 8.5.3 DistSQL How to solve Failed to get driver instance for jd- bcURL=xxx. exception when adding a data source using DistSQL? . . . . . . Updating metadata through one instance causes inconsistencies in other instances because they cannot get the latest metadata. It is ideal for engineers to build a ShardingSphere environment locally. Cluster Proxy using binary distribution, the environment must have Java JRE 8 or higher. 2.2.4 Procedure 1. Get ShardingSphere‐Proxy. ShardingSphere‐Proxy is available at: ‐ Binary Distribution ‐ Docker ‐ Helm