ExplainPropertyListNested(keyname, result, es); } ExplainCloseGroup(keysetname, keysetname, false, es); if (sortnode && es->format == EXPLAIN_FORMAT_TEXT) es->indent--; ExplainCloseGroup("Grouping Set", NULL, true, es);}/* * Show the grouping keys for a Group node. */static voi...
Oracle Database generates an internal SQL statement, which in turn generates a recursive call. In short, recursive calls are basically SQL performed on behalf of your SQL. So, if you had to parse the query, for example, you might have had to run some other queries to get ...
Example: Execute the following statement to check the execution plan of a query on a partitioned parent table with one partition scanned. EXPLAIN SELECT * FROM public.hologres_parent; The following figure shows the returned result. Query data by using a foreign table If you query data by usi...
Oracle Database generates an internal SQL statement, which in turn generates a recursive call. In short, recursive calls are basically SQL performed on behalf of your SQL. So, if you had to parse the query, for example, you might have had to run some other queries to get ...
Oracle Database maintains tables used for internal processing. When it needs to change these tables, Oracle Database generates an internal SQL statement, which in turn generates a recursive call. In short, recursive calls are basically SQL performed on behalf of your SQL. So, if you had to ...
生成SQL的执行计划是Oracle在对SQL做硬解析时的一个非常重要的步骤,它制定出一个方案告诉Oracle在执行这条SQL时以什么样的方式访问数据:索引还是全表扫描,是Hash Join还是Nested loops Join等。 比如说某条SQL通过使用索引的方式访问数据是最节省资源的,结果CBO作出的执行计划是全表扫描,那么这条SQL的性能必然是比较...
Example #3 Now, we will try to get the execution flow information for a query statement that involves the creation of the table. Let us say that we have to create one table named Educba_topics by selecting the column values from Educba_subjects table by using CREATE TABLE AS statement. Fo...
生成SQL的执行计划是Oracle在对SQL做硬解析时的一个非常重要的步骤,它制定出一个方案告诉Oracle在执行这条SQL时以什么样的方式访问数据:索引还是全表扫描,是Hash Join还是Nested loops Join等。比如说某条SQL通过使用索引的方式访问数据是最节省资源的,结果CBO作出的执行计划是全表扫描,那么这条SQL的性能必然是比较差...
Oracle Database maintains tables used for internal processing. When it needs to change these tables, Oracle Database generates an internal SQL statement, which in turn generates a recursive call. In short, recursive calls are basically SQL performed on behalf of your SQL. So, if you had to ...
Moreover, maybe with some regular expression, we can do it for arbitrary nested triple terms. We can easily write your idea also in N3: @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix : <http://www.example.org#> . ...