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Add SQL Standard WITH ORDINALITY support for UNNEST (and any other SRF)

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Author: Andrew Gierth, David Fetter
Reviewers: Dean Rasheed, Jeevan Chalke, Stephen Frost
This commit is contained in:
Greg Stark
2013-07-29 16:38:01 +01:00
parent 55cbfa5366
commit c62736cc37
22 changed files with 1486 additions and 323 deletions
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10
src/include/nodes/execnodes.h
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@ -1395,7 +1395,10 @@ typedef struct SubqueryScanState
* function appearing in FROM (typically a function returning set).
*
* eflags node's capability flags
* tupdesc expected return tuple description
* ordinal column value for WITH ORDINALITY
* scan_tupdesc scan tuple descriptor
* func_tupdesc function tuple descriptor
* func_slot function result slot, or null
* tuplestorestate private state of tuplestore.c
* funcexpr state for function expression being evaluated
* ----------------
@ -1404,7 +1407,10 @@ typedef struct FunctionScanState
{
ScanState ss; /* its first field is NodeTag */
int eflags;
TupleDesc tupdesc;
int64 ordinal;
TupleDesc scan_tupdesc;
TupleDesc func_tupdesc;
TupleTableSlot *func_slot;
Tuplestorestate *tuplestorestate;
ExprState *funcexpr;
} FunctionScanState;