<location>设置用户帐户 :操作将在其中发生的节点或分发。 选项有:“Control”、“ComputeNode”、“AllComputeNodes”、“AllDistributions”、“SubsetDistributions”、“Distribution”和“SubsetNodes”。 设置用户帐户 :随机移动的源数据。 <destination_table>...
ExplainDummyGroup("Utility Statement", NULL, es); }}/* * ExplainOnePlan - * given a planned query, execute it if needed, and then print * EXPLAIN output * * "into" is NULL unless we are explaining the contents of a CreateTableAsStmt, * in which case executing the query should resul...
Here if first checks the condition either the a is greater than b if yes then it will print a suppose if a is not greater than b then it will be print b because we specify the b in the else statement. 2) if-elseif The if-elseif is similar to the if-else but here the first ...
However the let statement is far from clear. I understand is has block scope, but why does THAT matter in the...Omit files or directories from revision control? I'd like to omit an app-specific directory from the revision control check done by Origen: Is there something similar to a ....
In the SQL statement, tbl1.a=tbl2.c is configured to join tables. However, the distribution key of the tbl1 table is a and that of the tbl2 table is d. As a result, data is shuffled during the join operation. Optimization suggestion: If an SQL statement contains the redistribution ...
However the let statement is far from clear. I understand is has block scope, but why does THAT matter in the...Omit files or directories from revision control? I'd like to omit an app-specific directory from the revision control check done by Origen: Is there something similar to a ....
I can't explain such a statement by him on the basis of logic. He must have blown his top. 我从逻辑推理方面解释不了他讲的这番话,他想必是神经错乱了. 《现代汉英综合大词典》 He will explain it fully once and for all. 他将把它充分地解释一次就此了结. 《简明英汉词典》 Many theories pur...
C: 在图形中包含每个运算符的期望输出基数 (元组数)。 注:允许这些选项的任何组合,但 F 和 T 除外,它们是互斥的。 抽取SQL 类型为 VARCHAR (2048) 的输出参数,其中包含可用于针对 EXPLAIN_STATEMENT 抽取格式化数据的 SQL 语句。 使用说明 参数explain_schema , explain_requester , explain_time , source_sche...
BatchGet RPC request is sent in the prefetch step. Get RPC request is sent when the insert on duplicate statement executes duplicate update. backoff: Contains different types of backoff and the total waiting time of backoff. IndexJoin The IndexJoin operator has 1 outer w...
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