diff options
Diffstat (limited to 'src/include/executor/spi_priv.h')
| -rw-r--r-- | src/include/executor/spi_priv.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/include/executor/spi_priv.h b/src/include/executor/spi_priv.h index faa81dbb7f8..ef7903abd09 100644 --- a/src/include/executor/spi_priv.h +++ b/src/include/executor/spi_priv.h @@ -59,6 +59,12 @@ typedef struct * while additional data such as argtypes and list cells is loose in the SPI * executor context. Such plans can be identified by having plancxt == NULL. * + * We can also have "one-shot" SPI plans (which are typically temporary, + * as described above). These are meant to be executed once and discarded, + * and various optimizations are made on the assumption of single use. + * Note in particular that the CachedPlanSources within such an SPI plan + * are not "complete" until execution. + * * Note: if the original query string contained only whitespace and comments, * the plancache_list will be NIL and so there is no place to store the * query string. We don't care about that, but we do care about the @@ -68,6 +74,7 @@ typedef struct _SPI_plan { int magic; /* should equal _SPI_PLAN_MAGIC */ bool saved; /* saved or unsaved plan? */ + bool oneshot; /* one-shot plan? */ List *plancache_list; /* one CachedPlanSource per parsetree */ MemoryContext plancxt; /* Context containing _SPI_plan and data */ int cursor_options; /* Cursor options used for planning */ |