an index when most of the rows will be selected. This branch is trying to
tune the query planner to make that happen more often.
FossilOrigin-Name: 0f42099ad65855c94af8472f3a6fddac7fc2a82e8fdfcc06a298eb6683a28688
also fixes a harmless use of an uninitialized integer variable as an input
to the %d format on a VDBE comment.
FossilOrigin-Name: 1cb248a3fc4c35c5bc3993b554edcccaa5c5e91570af67ebb99643a15221ae33
ANALYZE when N is positive. Positive N also disables collecting stat4.
FossilOrigin-Name: a279b151c1623807774daf4975175c62ea252eefb71f9820ced6773769b392c5
that sets a threshold at which ANALYZE starts to use approximations during
the analysis process.
FossilOrigin-Name: a773fd4698d474fda5e57bc77ed66a79cf74efee2706f43f6def6f450bfd1fc0
off of samples of the entire index and does not need to read the entire
index.
FossilOrigin-Name: 29d1cc5c3619a88229f18c3c8131228f8a2d151ac3d9203f0c7fc538a996ecec
OP_Function or OP_PureFunc opcodes are coded directly, rather than using
the intermediate OP_Function0 or OP_PureFunc0 - opcodes that are now removed.
FossilOrigin-Name: 84e02d773d60cffe619104991d21d7f0c68616c0f6bb99686bf54f5306c756d0
end of an sqlite_stat1 entry does not have an N value that is too small.
Ticket [e4598ecbdd18bd82]
FossilOrigin-Name: 98357d8c1263920b33a3648ef9214a63c99728bafa7a8d3dd6a1241b2303fd42
exist. STAT4 continues to work as it always has, and as it is a superset of
STAT3 is the recommended replacement.
FossilOrigin-Name: 1e17ea2fd1df4ad49138c787c8fe3207dd0c25c93f9001d52a9b69f8c12e841c
memory allocations by deferring memory allocation until
sqlite3VdbeResolveLabel() is called, at which point the code generator has
a better idea of how big the relocation table needs to be.
The sqlite3VdbeMakeLabel() routine now takes a Parse* parameter instead of
Vdbe*.
FossilOrigin-Name: 4a0929ac76d8aa5dd65eac3b83d6bbf41e505e01d175ca0fb2b19ba02d439415
prevents STAT4 data from being used but allows it to be loaded into the
Index objects. This permits STAT4 to be turned on and off on a per-statement
basis.
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macros said a branch could not be taken when in fact it could be. Alter
some window function branch coverage macros to indicate that comparison
operands cannot be NULL.
FossilOrigin-Name: 76e42b7071a71137c0da4f10db4e653ae94a89b56e95cd3f036bff08c9500d08
changesets generated by the sessions module. sqlite_stat1 entries in such
changesets are ignored by legacy clients.
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from the sqlite_stat1 table. Make the "PRAGMA stats" an SQLITE_DEBUG only
pragma. Add the flags column to "PRAGMA stats". These are all preliminary
steps toward a "PRAGMA analyze_ifneeded;" feature.
FossilOrigin-Name: 85026c8ee143bbd46565660fff8346ef81421546
set the default for the missing indexes after all other indexes are set
so that the default values are more in line with indexes that are actually
in the stat1 table.
FossilOrigin-Name: a62340dc0507e36f6dec05b1fda68d8399ec62ec
more compact and runs faster, especially when the application defines
thousands of new SQL functions.
FossilOrigin-Name: 3201fbcc5105d23132e6b8b7ac825e66af4f8a39
