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Extend EXPLAIN to support output in XML or JSON format.

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There are probably still some adjustments to be made in the details
of the output, but this gets the basic structure in place.

Robert Haas
This commit is contained in:
Tom Lane
2009-08-10 05:46:50 +00:00
parent 18894c401f
commit 9bd27b7c9e
12 changed files with 1153 additions and 364 deletions
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28
src/backend/utils/cache/lsyscache.c vendored
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.162 2009/06/11 14:49:05 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.163 2009/08/10 05:46:50 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -1298,6 +1298,32 @@ get_func_name(Oid funcid)
return NULL;
}
/*
* get_func_namespace
*
* Returns the pg_namespace OID associated with a given function.
*/
Oid
get_func_namespace(Oid funcid)
{
HeapTuple tp;
tp = SearchSysCache(PROCOID,
ObjectIdGetDatum(funcid),
0, 0, 0);
if (HeapTupleIsValid(tp))
{
Form_pg_proc functup = (Form_pg_proc) GETSTRUCT(tp);
Oid result;
result = functup->pronamespace;
ReleaseSysCache(tp);
return result;
}
else
return InvalidOid;
}
/*
* get_func_rettype
* Given procedure id, return the function's result type.