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documented optional flags for create_function/aggregate

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Kenichi Ishigaki 2015-04-16 22:09:48 +09:00
parent ae1eedab5c
commit 271886156b
1 changed files with 10 additions and 2 deletions
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12
lib/DBD/SQLite.pm
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@ -1738,7 +1738,7 @@ Retrieve the current busy timeout.
Set the current busy timeout. The timeout is in milliseconds.
=head2 $dbh->sqlite_create_function( $name, $argc, $code_ref )
=head2 $dbh->sqlite_create_function( $name, $argc, $code_ref, $flags )
This method will register a new function which will be usable in an SQL
query. The method's parameters are:
@ -1759,6 +1759,10 @@ the function can take any number of arguments.
This should be a reference to the function's implementation.
=item $flags
You can optionally pass an extra flag bit to create_function, which then would be ORed with SQLITE_UTF8 (default). As of 1.47_02 (SQLite 3.8.9), only meaning bit is SQLITE_DETERMINISTIC (introduced at SQLite 3.8.3), which can make the function perform better. See C API documentation at L<http://sqlite.org/c3ref/create_function.html> for details.
=back
For example, here is how to define a now() function which returns the
@ -1827,7 +1831,7 @@ so for most common cases it will be simpler to just
add your collation sequences in the C<%DBD::SQLite::COLLATION>
hash (see section L</"COLLATION FUNCTIONS"> below).
=head2 $dbh->sqlite_create_aggregate( $name, $argc, $pkg )
=head2 $dbh->sqlite_create_aggregate( $name, $argc, $pkg, $flags )
This method will register a new aggregate function which can then be used
from SQL. The method's parameters are:
@ -1849,6 +1853,10 @@ of arguments.
This is the package which implements the aggregator interface.
=item $flags
You can optionally pass an extra flag bit to create_aggregate, which then would be ORed with SQLITE_UTF8 (default). As of 1.47_02 (SQLite 3.8.9), only meaning bit is SQLITE_DETERMINISTIC (introduced at SQLite 3.8.3), which can make the function perform better. See C API documentation at L<http://sqlite.org/c3ref/create_function.html> for details.
=back
The aggregator interface consists of defining three methods: