Hi.
I've been working on making it possible for PL/Perl users to fetch large
result sets one row at a time (the current spi_exec_query interface just
returns a big hash).
The idea is to have spi_query call SPI_prepare/SPI_open_cursor, and have
an spi_fetchrow that calls SPI_cursor_fetch. It works well enough, but I
don't know how to reproduce spi_exec_query's error handling (it runs the
SPI_execute in a subtransaction).
To do something similar, I would have to create a WITH HOLD cursor in my
spi_query function. But SPI_cursor_open provides no way to do this, and
it calls PortalStart before I can set CURSOR_OPT_HOLD myself.
Suggestions?
-- ams
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