operation. However, when the Query Executor later became unblocked it would attempt to re-initialize all sub-plans even if they were not needed for the plan being re-evaluated. Greenplum now considers subplan to prevent increasing the optimization time significantly at the expense of a sub-optimal plan. To avoid generating sub-optimal plans, the query optimizer now generates both partition elimination options For some queries against partitioned tables that contain a large amount of data, GPORCA generated a sub-optimal query plan because of inaccurate cardinality estimation. This issue has been resolved. GPORCA

operation. However, when the Query Executor later became unblocked it would attempt to re-initialize all sub-plans even if they were not needed for the plan being re-evaluated. Greenplum now considers subplan to prevent increasing the optimization time significantly at the expense of a sub-optimal plan. To avoid generating sub-optimal plans, the query optimizer now generates both partition elimination options For some queries against partitioned tables that contain a large amount of data, GPORCA generated a sub-optimal query plan because of inaccurate cardinality estimation. This issue has been resolved. GPORCA

operation. However, when the Query Executor later became unblocked it would attempt to re-initialize all sub-plans even if they were not needed for the plan being re-evaluated. Greenplum now considers subplan to prevent increasing the optimization time significantly at the expense of a sub-optimal plan. To avoid generating sub-optimal plans, the query optimizer now generates both partition elimination options For some queries against partitioned tables that contain a large amount of data, GPORCA generated a sub-optimal query plan because of inaccurate cardinality estimation. This issue statements. This matches

operation. However, when the Query Executor later became unblocked it would attempt to re-initialize all sub-plans even if they were not needed for the plan being re-evaluated. Greenplum now considers subplan to prevent increasing the optimization time significantly at the expense of a sub-optimal plan. To avoid generating sub-optimal plans, the query optimizer now generates both partition elimination options For some queries against partitioned tables that contain a large amount of data, GPORCA generated a sub-optimal query plan because of inaccurate cardinality estimation. This issue has been resolved. GPORCA

Selective Partition Scanning 357 About Viewing Your Partition Design 357 Viewing a Classic Syntax Sub-Partition Template 358 Constructing a pg_partitions-Equivalent Query 358 About Partition Pruning 375 Truncating a Partition 376 Exchanging a Partition 376 Splitting a Partition 376 Modifying a Sub-Partition Template 377 Exchanging a Leaf Partition with an External Table 377 Example Exchanging function is changed. In cases where the pattern can be matched in more than one way, the initial sub-pattern is now treated as matching the least possible amount of text rather than the greatest. For

Synopsis 2108 Description 2108 Sub-commands 2108 deploy 2108 import 2108 Examples 2109 gpv config 2109 Synopsis 2109 Description 2109 Required Inputs 2109 Sub-commands 2111 init 2111 Examples Greenplum 6 Documentation VMware by Broadcom 126 gpv greenplum 2115 Synopsis 2115 Description 2115 Sub-commands 2115 deploy 2115 list 2115 validate 2115 pg_config 2115 Synopsis 2116 Description 2116 generated incorrect results when using set returning functions, such as a generate_series or an inner sub-query. 6641 VMware Greenplum 6 Documentation VMware by Broadcom 156 Resolves a bug that caused

2065 Sub-commands 2065 deploy 2065 import 2066 VMware Greenplum 6 Documentation VMware, Inc. 122 Examples 2066 gpv config 2066 Synopsis 2066 Description 2066 Required Inputs 2066 Sub-commands gp-virtual-internal 2070 vm 2071 vsphere 2071 gpv greenplum 2072 Synopsis 2072 Description 2072 Sub-commands 2072 deploy 2072 list 2072 validate 2072 pg_config 2073 Synopsis 2073 Description 2073 generated incorrect results when using set returning functions, such as a generate_series or an inner sub-query. 6641 Resolves a bug that caused a query with range type to fail with GPORCA, but it ran successfully

WITH RECURSIVE included_parts(sub_part, part, quantity) AS ( SELECT sub_part, part, quantity FROM parts WHERE part = 'our_product' UNION ALL SELECT p.sub_part, p.part, p.quantity part = pr.sub_part Greenplum Database 管理员指南 V6.2.1 版权所有：Esena(陈淼 +86 18616691889) 编写：陈淼 - 220 - ) SELECT sub_part, SUM(quantity) as total_quantity FROM included_parts GROUP BY sub_part; 的所有直接和间接组成部分。 WITH RECURSIVE included_parts(sub_part, part) AS ( SELECT sub_part, part FROM parts WHERE part = 'our_product' UNION ALL SELECT p.sub_part, p.part FROM included_parts

更强悍，把 Postgresql 作为实例（该实例非 Oracle实例概念，这里指的是一个分布式子库架构在Interconnect下）， 在 Interconnect 的指挥协调下，数十个甚至数千个 Sub Postgresql 数 据库实例同时开展并行计算。而且，这些 Postgresql 之间采用 share- nothing 无共享架构，从而更将这种并行计算能力发挥到极致，除此之 外，MPP 采 16-11-22 下午3:38 Greenplum 精粹文集 51 INSERTINTO userssn(username, ssn) SELECT robotccs.username,pgp_pub_encrypt(robotccs.ssn, keys. pubkey) AS ssn FROM ( VALUES ('Alice', '123-45-6788'), ('Bob','123-45-6799'))

operation. However, when the Query Executor later became unblocked it would attempt to re-initialize all sub-plans even if they VMware Greenplum v6.19 Documentation VMware, Inc. 156 were not needed for the to prevent increasing the optimization time significantly at the expense of a sub-optimal plan. To avoid generating sub-optimal plans, the query optimizer now generates both partition elimination options For some queries against partitioned tables that contain a large amount of data, GPORCA generated a sub-optimal query plan because of inaccurate cardinality estimation. This issue has been resolved. GPORCA