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| author | Anssi Kääriäinen <akaariai@gmail.com> | 2012-08-21 18:43:08 +0300 |
|---|---|---|
| committer | Anssi Kääriäinen <akaariai@gmail.com> | 2012-08-21 21:23:57 +0300 |
| commit | a193372753ad9d1d15ad5e2d6d06bbc07ca3f433 (patch) | |
| tree | 2e0b3c6165a161c7b403c3e3bcb65fb538f31e59 /docs/ref | |
| parent | fd58d6c258058f8ac54e241b21b949bdbe50059b (diff) | |
Fixed #17886 -- Fixed join promotion in ORed nullable queries
The ORM generated a query with INNER JOIN instead of LEFT OUTER JOIN
in a somewhat complicated case. The main issue was that there was a
chain of nullable FK -> non-nullble FK, and the join promotion logic
didn't see the need to promote the non-nullable FK even if the
previous nullable FK was already promoted to LOUTER JOIN. This resulted
in a query like a LOUTER b INNER c, which incorrectly prunes results.
Diffstat (limited to 'docs/ref')
0 files changed, 0 insertions, 0 deletions