postgres

Commit Graph

Author	SHA1	Message	Date
Bruce Momjian	6812e95a28	Improve random regression tests to fail less frequently.	22 years ago
Bruce Momjian	6cb1f4fe44	The "random" regression test uses a function called oidrand(), which takes two parameters, an OID x and an integer y, and returns "true" with probability 1/y (the OID argument is ignored). This can be useful -- for example, it can be used to select a random sampling of the rows in a table (which is what the "random" regression test uses it for). This patch removes that function, because it was old and messy. The old function had the following problems: - it was undocumented - it was poorly named - it was designed to workaround an optimizer bug that no longer exists (the OID argument is to ensure that the optimizer won't optimize away calls to the function; AFAIK marking the function as 'volatile' suffices nowadays) - it used a different random-number generation technique than the other PSRNG-related functions in the backend do (it called random() like they do, but it had its own logic for setting a set and deciding when to reseed the RNG). Ok, this patch removes oidrand(), oidsrand(), and userfntest(), and improves the SGML docs a little bit (un-commenting the setseed() documentation). Neil Conway	23 years ago
Thomas G. Lockhart	d1e6368816	Clean up header for uniform appearance throughout tests.	26 years ago
Thomas G. Lockhart	620c2c362f	Update the random test so it should succeed most of the time. Instead of directly showing the random results, test the results for the expected behavior (range and randomness).	28 years ago
Marc G. Fournier	a426ff583d	There, I'll leave this alone until Thomas catchs up grin	29 years ago

5 Commits (31edbadf4af45dd4eecebcb732702ec6d7ae1819)