Sharding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Inline Expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Distributed Primary Key Apache ShardingSphere document, v5.0.0 Inline Expression Motivation Configuration simplicity and unity are two main problems that inline expression intends to solve. In complex sharding rules, with Explanation The use of inline expressions is really direct. Users only need to configure ${ expression } or $->{ expression } to identify them. ShardingSphere currently supports the configurations of data nodes

Sharding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Inline Expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Distributed Primary Key . . . . . . 348 7.8.9 [Sharding] Why does float number appear in the return result of inline expression?348 7.8.10 [Sharding] If sharding database is partial, should tables without sharding database Please refer to Hint for more details. Inline Expression Motivation Configuration simplicity and unity are two main problems that inline expression intends to solve. In complex sharding rules, with

Sharding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Inline Expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Distributed Primary Key . . . . . . 360 7.8.9 [Sharding] Why does float number appear in the return result of inline expression?360 7.8.10 [Sharding] If sharding database is partial, should tables without sharding database Please refer to Hint for more details. Inline Expression Motivation Configuration simplicity and unity are two main problems that inline expression intends to solve. In complex sharding rules, with

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Inline Expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Distributed Primary Key ⋯in string value ⋯ error? 294 7.5 Why does float number appear in the return result of inline expression? . . . . . . . . . 294 7.6 If sharding database is partial, should tables without sharding database • Core concepts of SQL • Core concepts of sharding • Core concepts of configuration • Inline expression • Distributed primary key • Hint Sharding route SQL Logic Table It refers collectively to

used to perform monitoring methods before and after task execution. Listeners are divided into regular listeners executed by each job node and distributed lis‐ teners executed by only a single node in Description jobName St ri ng Job name shar dingTotalCount i nt Sharding total count cron St ri ng CRON expression, control the job trigger time timeZone St ri ng time zone of CRON sharding ItemParame‐ ters required Mesos native library. Specify Mesos native library path by property -Djava. library.path. For instance, Mesos native libraries are under /usr/local/lib, so the property -Djava.library. path=/usr/local/lib

. . . . . . . 457 8.3.2 Sharding Why does float number appear in the return result of inline expression?457 8.3.3 Sharding If sharding database is partial, should tables without sharding database & changes, or incorrect handling of operations such as paging, sorting, and aggregate grouping. Cross‐library transactions are also tricky for a distributed database cluster. Reasonable use of table splitting can effectively avoid the trouble caused by distributed transactions. In scenarios where cross‐library transactions cannot be avoided, some businesses might still be in the need to maintain transaction

. . . . . . . 496 8.3.2 Sharding Why does float number appear in the return result of inline expression?496 8.3.3 Sharding If sharding database is partial, should tables without sharding database & changes, or incorrect handling of operations such as paging, sorting, and aggregate grouping. Cross‐library transactions are also tricky for a distributed database cluster. Reasonable use of table splitting can effectively avoid the trouble caused by distributed transactions. In scenarios where cross‐library transactions cannot be avoided, some businesses might still be in the need to maintain transaction

. . . . . . . 549 13.4.2 Sharding Why does float number appear in the return result of inline expression?550 13.4.3 Sharding If sharding database is partial, should tables without sharding database changes, or incorrect handling of operations such as paging, sorting, and aggregate grouping. Cross‐library transactions are also tricky for a distributed database cluster. Reasonable use of table splitting can effectively avoid the trouble caused by distributed transactions. In scenarios where cross‐library transactions cannot be avoided, some businesses might still be in the need to maintain transaction

. . . . . . . 578 13.3.2 Sharding Why does float number appear in the return result of inline expression?578 13.3.3 Sharding If sharding database is partial, should tables without sharding database changes, or incorrect handling of operations such as paging, sorting, and aggregate grouping. Cross‐library transactions are also tricky for a distributed database cluster. Reasonable use of table splitting can effectively avoid the trouble caused by distributed transactions. In scenarios where cross‐library transactions cannot be avoided, some businesses might still be in the need to maintain transaction

4.2. 数据分片 25 Apache ShardingSphere document, v5.0.0 语法说明 行表达式的使用非常直观，只需要在配置中使用 ${ expression } 或 $->{ expression } 标识行 表达式即可。目前支持数据节点和分片算法这两个部分的配置。行表达式的内容使用的是 Groovy 的语法， Groovy 能够支持的所有操作，行表达式均能够支持。例如： 能够支持的所有操作，行表达式均能够支持。例如： ${begin..end} 表示范围区间 ${[unit1, unit2, unit_x]} 表示枚举值 行表达式中如果出现连续多个 ${ expression } 或 $->{ expression } 表达式，整个表达式最终 的结果将会根据每个子表达式的结果进行笛卡尔组合。 例如，以下行表达式： ${['online', 'offline']}_table${1..3} dbShardingAlgorithmrProps = new Properties(); dbShardingAlgorithmrProps.setProperty("algorithm-expression", "ds${user_id % 2}"); shardingRuleConfig.getShardingAlgorithms().put("dbShardingAlgorithm", new