[jira] Updated: (PIG-1069) [zebra] Order Preserving Sorted Table Union
[ https://issues.apache.org/jira/browse/PIG-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Alan Gates updated PIG-1069: Resolution: Fixed Fix Version/s: 0.6.0 Status: Resolved (was: Patch Available) Patch checked in. > [zebra] Order Preserving Sorted Table Union > --- > > Key: PIG-1069 > URL: https://issues.apache.org/jira/browse/PIG-1069 > Project: Pig > Issue Type: New Feature >Affects Versions: 0.6.0 >Reporter: Yan Zhou >Assignee: Yan Zhou > Fix For: 0.6.0 > > Attachments: OrderPreservingSortedTableUnion_svn.patch > > > The output schema will adopt a "schema union" semantics, namely, if an output > column only appears in one component table, the result rows will have the > values of the column if the rows are from that component table and null > otherwise; on the other hand, if an output column appears in multiple > component tables, the types of the column in all the component tables must be > identical. Otherwise, an exception will be thrown. The result rows will have > the values of the column if the rows are from the component tables that have > the column themselves, or null if otherwise. > The order preserving sort-unioned results could be further indexed by the > component tables if the projection contains column(s) named "source_table". > If so specified, the component table index will be output at the position(s) > as specified in the projection list. If the underlying table is not a union > of sorted tables, use of the special column name in projection will cause an > exception thrown. > If an attempt is made to create a table of a column named "source_table", an > excpetion will be thrown as the name is reserved by zebra for the virtual > name. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1069) [zebra] Order Preserving Sorted Table Union
[ https://issues.apache.org/jira/browse/PIG-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yan Zhou updated PIG-1069: -- Summary: [zebra] Order Preserving Sorted Table Union (was: Order Preserving Sorted Table Union) > [zebra] Order Preserving Sorted Table Union > --- > > Key: PIG-1069 > URL: https://issues.apache.org/jira/browse/PIG-1069 > Project: Pig > Issue Type: New Feature >Affects Versions: 0.6.0 >Reporter: Yan Zhou >Assignee: Yan Zhou > Attachments: OrderPreservingSortedTableUnion_svn.patch > > > The output schema will adopt a "schema union" semantics, namely, if an output > column only appears in one component table, the result rows will have the > values of the column if the rows are from that component table and null > otherwise; on the other hand, if an output column appears in multiple > component tables, the types of the column in all the component tables must be > identical. Otherwise, an exception will be thrown. The result rows will have > the values of the column if the rows are from the component tables that have > the column themselves, or null if otherwise. > The order preserving sort-unioned results could be further indexed by the > component tables if the projection contains column(s) named "source_table". > If so specified, the component table index will be output at the position(s) > as specified in the projection list. If the underlying table is not a union > of sorted tables, use of the special column name in projection will cause an > exception thrown. > If an attempt is made to create a table of a column named "source_table", an > excpetion will be thrown as the name is reserved by zebra for the virtual > name. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1069) [zebra] Order Preserving Sorted Table Union
[ https://issues.apache.org/jira/browse/PIG-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yan Zhou updated PIG-1069: -- Status: Patch Available (was: Open) > [zebra] Order Preserving Sorted Table Union > --- > > Key: PIG-1069 > URL: https://issues.apache.org/jira/browse/PIG-1069 > Project: Pig > Issue Type: New Feature >Affects Versions: 0.6.0 >Reporter: Yan Zhou >Assignee: Yan Zhou > Attachments: OrderPreservingSortedTableUnion_svn.patch > > > The output schema will adopt a "schema union" semantics, namely, if an output > column only appears in one component table, the result rows will have the > values of the column if the rows are from that component table and null > otherwise; on the other hand, if an output column appears in multiple > component tables, the types of the column in all the component tables must be > identical. Otherwise, an exception will be thrown. The result rows will have > the values of the column if the rows are from the component tables that have > the column themselves, or null if otherwise. > The order preserving sort-unioned results could be further indexed by the > component tables if the projection contains column(s) named "source_table". > If so specified, the component table index will be output at the position(s) > as specified in the projection list. If the underlying table is not a union > of sorted tables, use of the special column name in projection will cause an > exception thrown. > If an attempt is made to create a table of a column named "source_table", an > excpetion will be thrown as the name is reserved by zebra for the virtual > name. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Updated: (PIG-1069) [zebra] Order Preserving Sorted Table Union
[ https://issues.apache.org/jira/browse/PIG-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Yan Zhou updated PIG-1069: -- Attachment: OrderPreservingSortedTableUnion_svn.patch > [zebra] Order Preserving Sorted Table Union > --- > > Key: PIG-1069 > URL: https://issues.apache.org/jira/browse/PIG-1069 > Project: Pig > Issue Type: New Feature >Affects Versions: 0.6.0 >Reporter: Yan Zhou >Assignee: Yan Zhou > Attachments: OrderPreservingSortedTableUnion_svn.patch > > > The output schema will adopt a "schema union" semantics, namely, if an output > column only appears in one component table, the result rows will have the > values of the column if the rows are from that component table and null > otherwise; on the other hand, if an output column appears in multiple > component tables, the types of the column in all the component tables must be > identical. Otherwise, an exception will be thrown. The result rows will have > the values of the column if the rows are from the component tables that have > the column themselves, or null if otherwise. > The order preserving sort-unioned results could be further indexed by the > component tables if the projection contains column(s) named "source_table". > If so specified, the component table index will be output at the position(s) > as specified in the projection list. If the underlying table is not a union > of sorted tables, use of the special column name in projection will cause an > exception thrown. > If an attempt is made to create a table of a column named "source_table", an > excpetion will be thrown as the name is reserved by zebra for the virtual > name. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
