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Overview
Comment:Add documentation comment for new experimental API sqlite3_reoptimize().
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SHA1:c48f8ffedc30841aa4994eb925d09c2ee97a864d
User & Date: dan 2009-10-17 08:26:29
Context
2009-10-17
13:13
Make sure the target register is allocated before adding the bogus OP_Variable opcode in isLikeOrGlob(). Bugfix for the new sqlite3_reoptimize() logic. check-in: e74f8dc4 user: drh tags: trunk
08:26
Add documentation comment for new experimental API sqlite3_reoptimize(). check-in: c48f8ffe user: dan tags: trunk
2009-10-16
16:21
Merge the sqlite3_reoptimize() changes into the trunk. check-in: 50136840 user: drh tags: trunk
Changes
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Changes to src/sqlite.h.in.

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/*
** CAPI3REF: Optimizing for Bound Parameters
** EXPERIMENTAL
**
** If possible, optimize the SQL statement passed as the only argument
** for the values currently bound to the statements SQL variables.






















*/
int sqlite3_reoptimize(sqlite3_stmt *pStmt);

/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/







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/*
** CAPI3REF: Optimizing for Bound Parameters
** EXPERIMENTAL
**
** If possible, optimize the SQL statement passed as the only argument
** for the values currently bound to the statements SQL variables.
**
** SQLite currently contains two optimizations that depend upon the values 
** of SQL literals specified as part of a query:
**
** <ul>
**   <li> The [range query optimization], and 
**   <li> The [LIKE optimization].
** </ul>
**
** Normally, queries that use an SQL [parameter] in the relevant expression 
** or expressions may not benefit from either of the above optimizations.
** This function may be used to overcome this limitation.
**
** Calling sqlite3_reoptimize() on a statement handle after values have been
** bound to its SQL parameters causes SQLite to inspect the query and the
** bound values to determine if either of the above optimizations may be
** applied to it. If so, a new query plan is formulated to take advantage
** of the optimizations.
**
** If it is determined that neither of the above optimizations may be
** profitably applied to the query based on the values bound to SQL 
** parameters, this function is a no-op.
*/
int sqlite3_reoptimize(sqlite3_stmt *pStmt);

/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/

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