generality, a small size reduction, and a small performance increase.
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global variables. See
[forum:/forumpost/719a11e1314d1c70|forum thread 719a11e1314d1c70].
FossilOrigin-Name: 8e6ad3a3e942a326cf16432e16d6596c7206c05b6f45cd0ff3a9b836bcfc9deb
db and ptr parameters are guaranteed to be non-NULL. Use this where
appropriate to save more than 2 million CPU cycles on the standard
performance test.
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would leave both EP_InnerON and EP_OuterON constraints on the same join term.
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thereby avoiding special case code and freeing up a bit in the
FuncDef.flags field.
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needed, so that if it is not needed, not useless work is performed.
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reuse the same ephemeral cursor of a list subquery when that subquery is
reused, as it does not work in cases where the list subquery is used both
for lookups and for scans.
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so that the whole lot can be copied all at once. Faster and smaller code.
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seems to work the same as PG. The code is chaos, however, and needs some
cleanup.
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the IN operator right-hand side generator from the RIGHT JOIN no-match logic
does not generate unreachable byte code.
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check-in [664b461bb5063d980] and reported by
[forum:/forumpost/0d3200f4f3bcd3a3|forum post 0d3200f4f3bcd3a3].
FossilOrigin-Name: 7ca3456c00998a429418ff29cf251b381586b330b88344c94a40c5df0b71da85
of an OUTER JOIN even if the OUTER JOIN is in parentheses. Prototype code
only.
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of a RIGHT JOIN, detect that situation early and raise a parsing error.
This is a temporary measure that needs to be fixed.
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a separate allocate for the base object and the array of IDs). Also permit
an IdList object to store an Expr pointer together with each name.
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constraints on outer joins, and (3) ON/USING clause constraints on inner
joins. Formerly, there was no distinctionb between 1 and 3, but RIGHT JOIN
needs to know the difference. Make RIGHT JOIN aware of this difference and
add test cases.
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"RightJoin" in the former name do not lead readers to believe that this has
something to do with RIGHT JOINs in particular.
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the code to compute the unmatched rows for the RIGHT JOIN has not yet been
added, so the result of a RIGHT JOIN is currently the same as an INNER JOIN.
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from about a month ago such that it still takes a transaction on all attached
databases, but it only starts a read transaction for read-only operations,
rather than starting a write transaction for everything.
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OP_ReleaseReg opcodes. OP_ReleaseReg opcodes are usually only generated for
SQLITE_DEBUG builds and are used to verify that registers are descoped
propertly. But they can get in the way of code understanding when studying
bytecode dumps. So this new optimization setting is provided to
temporarily turn OP_ReleaseReg opcodes off.
FossilOrigin-Name: fa5276725f246cef9d58b27c1e617ee3f873f7a9b88284a4e8fc453ebda338bc
