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parse_oper.c

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    • Tom Lane's avatar
      d54ca567
      Install a lookaside cache to speed up repeated lookups of the same operator · d54ca567
      Tom Lane authored 
      by short-circuiting schema search path and ambiguous-operator resolution
computations.  Remarkably, this buys as much as 45% speedup of repetitive
simple queries that involve operators that are not an exact match to the
input datatypes.  It should be marginally faster even for exact-match
cases, though I've not had success in proving an improvement in benchmark
tests.  Per report from Guillame Smet and subsequent discussion.
      d54ca567
      History
      Install a lookaside cache to speed up repeated lookups of the same operator
      Tom Lane authored 
      by short-circuiting schema search path and ambiguous-operator resolution
computations.  Remarkably, this buys as much as 45% speedup of repetitive
simple queries that involve operators that are not an exact match to the
input datatypes.  It should be marginally faster even for exact-match
cases, though I've not had success in proving an improvement in benchmark
tests.  Per report from Guillame Smet and subsequent discussion.