Change the name of the compile-time option to enable these interfaces
from SQLITE_ENABLE_MEMDB to SQLITE_ENABLE_DESERIALIZE.
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which can be used to measure per-opcode values other than elapse time, if
non-zero.
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declared with "col UNIQUE NOT NULL" (where the NOT NULL comes after the
UNIQUE).
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"db memdb" command from the TCL interface, replacing it with "db serialize"
and "db deserialize".
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sqlite3_memdb_config() interfaces, to enable an SQLite database to be
manipulated as an in-memory object.
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function if compiled with -DSQLITE_ENABLE_OFFSET_SQL_FUNC. The makefiles add
that definition to shell builds.
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execute, as comments in the output from sqlite3_trace() and sqlite3_trace_v2().
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pointer to the sqlite3_index_info object passed into xBestIndex rather than
an sqlite3 connection pointer, which the xBestIndex method might not have
access to.
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(which we can do without breaking compatibility because the former name has
not yet appeared in an official release) and streamline its implementation.
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location of the payload within the database for the record that contains
column X. location(X) returns NULL if X is not an ordinary table column or
if SQLite cannot figure out the location because it is using a covering index.
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SQLITE_CONFIG_MULTITHREADED. Enabled at compile time using
SQLITE_ENABLE_MULTITHREADED_CHECKS.
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on a TK_LIMIT node, for a small code size reduction and performance increase,
and a reduction in code complexity.
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no function calls or subqueries. This is a partial reversal of
check-in [c9104b59]. Co-routines are still preferred if the outer
query has a complex result set, but for simple results sets, query flattening
is used. Check-in [4464f40ccd7] is completely backed
out due to this change.
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conditionals that improve performance but do not change the outcome.
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the ExprList returned by sqlite3ExprListDup() would never be passed into
sqlite3ExprListAppend(). Include a new test case that shows this sometimes
does happen.
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number of outstanding allocations, and rather computing that value only
when requested.
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faster, and easier to maintain. In place of the scratch allocator, add the
SQLITE_CONFIG_SMALL_MALLOC configuration option that provides a hint to SQLite
that large memory allocations should be avoided.
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