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Overview
| Comment: | Added comments for SQLITE_OMIT_UNIQUE_ENFORCEMENT. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
21beb4719d9ed02c5fd8122a5e6046ff |
| User & Date: | shaneh 2011-03-12 05:01:21 |
| Original Comment: | Added comments for SQLITE_OMIT_UNIQUE_ENFORCEMENT.
Added comments for SQLITE_OMIT_UNIQUE_ENFORCEMENT. |
Context
|
2011-03-12
| ||
| 05:03 | Fixed typo. (check-in: 12e0a9369a user: shaneh tags: trunk) | |
| 05:01 | Added comments for SQLITE_OMIT_UNIQUE_ENFORCEMENT. (check-in: 21beb4719d user: shaneh tags: trunk) | |
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2011-03-07
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| 13:40 | Fix typos in Appendix A of fts3.html. (check-in: b3c69199b5 user: dan tags: trunk) | |
Changes
Changes to pages/compile.in.
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COMPILE_OPTION {SQLITE_OMIT_TRUNCATE_OPTIMIZATION} {
A default build of SQLite, if a [DELETE] statement has no WHERE clause
and operates on a table with no triggers, an optimization occurs that
causes the DELETE to occur by dropping and recreating the table.
Dropping and recreating a table is usually much faster than deleting
the table content row by row. This is the "truncate optimization".
}
COMPILE_OPTION {SQLITE_OMIT_UTF16} {
This macro is used to omit support for UTF16 text encoding. When this is
defined all API functions that return or accept UTF16 encoded text are
unavailable. These functions can be identified by the fact that they end
with '16', for example [sqlite3_prepare16()], [sqlite3_column_text16()] and
[sqlite3_bind_text16()].
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> > > > > > > > > |
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COMPILE_OPTION {SQLITE_OMIT_TRUNCATE_OPTIMIZATION} {
A default build of SQLite, if a [DELETE] statement has no WHERE clause
and operates on a table with no triggers, an optimization occurs that
causes the DELETE to occur by dropping and recreating the table.
Dropping and recreating a table is usually much faster than deleting
the table content row by row. This is the "truncate optimization".
}
COMPILE_OPTION {SQLITE_OMIT_UNIQUE_ENFORCEMENT} {
This macro is used to omit support for enforcing unique constraints.
Constraints may still be defined, and all code and optimizations
function as if they are enforced, however, the OP_IsUnique VDBE
opcode is not generated. This may be useful for users who can
guarantee uniqueness of inputs, or have other means of enforcing
the constaint. See also [SQLITE_OMIT_CHECK], [EXPLAIN].
}
COMPILE_OPTION {SQLITE_OMIT_UTF16} {
This macro is used to omit support for UTF16 text encoding. When this is
defined all API functions that return or accept UTF16 encoded text are
unavailable. These functions can be identified by the fact that they end
with '16', for example [sqlite3_prepare16()], [sqlite3_column_text16()] and
[sqlite3_bind_text16()].
|