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Improve parse representation for MERGE

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Separation of parser data structures from executor, as
requested by Tom Lane. Further improvements possible.

While there, implement error for multiple VALUES clauses via parser
to allow line number of error, as requested by Andres Freund.

Author: Pavan Deolasee

Discussion: https://www.postgresql.org/message-id/CABOikdPpqjectFchg0FyTOpsGXyPoqwgC==OLKWuxgBOsrDDZw@mail.gmail.com
This commit is contained in:
Simon Riggs
2018-04-06 09:38:59 +01:00
parent 3b0b4f31f7
commit f1464c5380
11 changed files with 207 additions and 148 deletions
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3
src/include/nodes/nodes.h
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@ -269,6 +269,7 @@ typedef enum NodeTag
T_RollupData,
T_GroupingSetData,
T_StatisticExtInfo,
T_MergeAction,
/*
* TAGS FOR MEMORY NODES (memnodes.h)
@ -310,7 +311,6 @@ typedef enum NodeTag
T_DeleteStmt,
T_UpdateStmt,
T_MergeStmt,
T_MergeAction,
T_SelectStmt,
T_AlterTableStmt,
T_AlterTableCmd,
@ -475,6 +475,7 @@ typedef enum NodeTag
T_PartitionRangeDatum,
T_PartitionCmd,
T_VacuumRelation,
T_MergeWhenClause,
/*
* TAGS FOR REPLICATION GRAMMAR PARSE NODES (replnodes.h)