public class Explain_Test { public static void main(String[] args) throws Exception { FlinkEnv flinkEnv = FlinkEnvUtils.getStreamTableEnv(args); flinkEnv.env().setParallelism(); String sql = "CREATE TABLE source_table (\n" + " user_id BIGINT COMMENT '用户 id',\n" + " name STRING ...
Mode – A label describing fundamental operator behavior. This column is mostly blank (-). One exception isTermResolution, where mode can beid2value_opencypher, indicating a resolution from ID to openCypher value. Units In – The number of solutions passed as input to this operator. Operators...
|1| SIMPLE |testa| const |PRIMARY,idx_name| PRIMARY |4| const |1| NULL |+---+---+---+---+---+---+---+---+---+---+1rowinset# 下面虽然name有索引,但是查询的列cusno没有索引,这时mysql计划possible_keys有索引,但实际key未走索引,若果cusno换成有索引的列,参照下面。mysql> expl...
public class Explain_Test { public static void main(String[] args) throws Exception { FlinkEnv flinkEnv = FlinkEnvUtils.getStreamTableEnv(args); flinkEnv.env().setParallelism(1); String sql = "CREATE TABLE source_table (\n" + " user_id BIGINT COMMENT '用户 id',\n" + " name STRING...
but isfaster than performing a join with no index at all. The applicability criteria areas described in Section 7.13.1, “Range Optimization”, and Section 7.13.2,“Index Merge Optimization”, with the exception that all column values for thepreceding table are known and considered to be consta...
public class Explain_Test{public static void main(String[]args)throws Exception{FlinkEnv flinkEnv=FlinkEnvUtils.getStreamTableEnv(args);flinkEnv.env().setParallelism(1);String sql="CREATE TABLE source_table (\n"+" user_id BIGINT COMMENT '用户 id',\n"+" name STRING COMMENT '用户姓名',\n...
Consider the scenario in which you want to create and manage tasks on a remote computer by using the Task Scheduler user interface. Before connecting to the remote computer, you must enable the Remote Scheduled Tasks Management firewall exception on the remote computer. You can ...
EE Accounts cannot be shared, only the account holder can use the EE Service. EE Accounts require the User to provide a valid email address and set up a password. The only exception to this requirement is EE Accounts created by a Customer designated administrator that creates group accounts on...
The applicability criteria are as described in Section 8.2.1.2, “Range Optimization”, and Section 8.2.1.3, “Index Merge Optimization”, with the exception that all column values for the preceding table are known and considered to be constants. Indexes are numbered beginning with 1, in the ...
The applicability criteria are as described in Section 10.2.1.2, “Range Optimization”, and Section 10.2.1.3, “Index Merge Optimization”, with the exception that all column values for the preceding table are known and considered to be constants. Indexes are numbered beginning with 1, in the...