X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FManual%2FCookbook.pod;h=3e3f5dbde2fa1fc620579566a54bae3bac72567b;hb=d5dedbd62928f65a9071b4d9b6d56c6b663a073b;hp=e5f255931f1703534fa0260f75b8002d4469fb19;hpb=ed7ab0f4ce1a9118ea6285ee562ef003085a6b64;p=dbsrgits%2FDBIx-Class.git diff --git a/lib/DBIx/Class/Manual/Cookbook.pod b/lib/DBIx/Class/Manual/Cookbook.pod index e5f2559..3e3f5db 100644 --- a/lib/DBIx/Class/Manual/Cookbook.pod +++ b/lib/DBIx/Class/Manual/Cookbook.pod @@ -151,7 +151,7 @@ Note that you cannot have bind parameters unless is_virtual is set to true. =item * NOTE If you're using the old deprecated C<< $rsrc_instance->name(\'( SELECT ...') >> -method for custom SQL execution, you are highly encouraged to update your code +method for custom SQL execution, you are highly encouraged to update your code to use a virtual view as above. If you do not want to change your code, and just want to suppress the deprecation warning when you call L, add this line to your source definition, so that @@ -202,7 +202,7 @@ to access the returned value: # FROM artist Note that the C attribute B with the SQL -syntax C< SELECT foo AS bar > (see the documentation in +syntax C< SELECT foo AS bar > (see the documentation in L). You can control the C part of the generated SQL via the C<-as> field attribute as follows: @@ -218,10 +218,10 @@ generated SQL via the C<-as> field attribute as follows: ); # Equivalent SQL - # SELECT me.artistid, me.name, me.rank, me.charfield, COUNT( cds.cdid ) AS amount_of_cds - # FROM artist me LEFT JOIN cd cds ON cds.artist = me.artistid - # GROUP BY me.artistid, me.name, me.rank, me.charfield - # ORDER BY amount_of_cds DESC + # SELECT me.artistid, me.name, me.rank, me.charfield, COUNT( cds.cdid ) AS amount_of_cds + # FROM artist me LEFT JOIN cd cds ON cds.artist = me.artistid + # GROUP BY me.artistid, me.name, me.rank, me.charfield + # ORDER BY amount_of_cds DESC If your alias exists as a column in your base class (i.e. it was added with @@ -1280,7 +1280,7 @@ row. my $schema = MySchema->connect("dbi:Pg:dbname=my_db"); - # Start a transaction. Every database change from here on will only be + # Start a transaction. Every database change from here on will only be # committed into the database if the try block succeeds. use Try::Tiny; my $exception; @@ -1326,7 +1326,7 @@ row. # next $thing print "Cannot create thing: $_"; } - # There was no error, so save all changes since the last + # There was no error, so save all changes since the last # savepoint. # SQL: RELEASE SAVEPOINT savepoint_0; @@ -1695,24 +1695,6 @@ this, you can also overload the C method for your schema class: return $rv; } -=head2 Setting limit dialect for SQL::Abstract::Limit - -In some cases, SQL::Abstract::Limit cannot determine the dialect of -the remote SQL server by looking at the database handle. This is a -common problem when using the DBD::JDBC, since the DBD-driver only -know that in has a Java-driver available, not which JDBC driver the -Java component has loaded. This specifically sets the limit_dialect -to Microsoft SQL-server (See more names in SQL::Abstract::Limit --documentation. - - __PACKAGE__->storage->sql_maker->limit_dialect('mssql'); - -The JDBC bridge is one way of getting access to a MSSQL server from a platform -that Microsoft doesn't deliver native client libraries for. (e.g. Linux) - -The limit dialect can also be set at connect time by specifying a -C key in the final hash as shown above. - =head2 Working with PostgreSQL array types You can also assign values to PostgreSQL array columns by passing array @@ -1781,7 +1763,7 @@ database if the C is set in the connect options. my $schema = My::Schema->connection('dbi:mysql:dbname=test', $user, $pass, { mysql_enable_utf8 => 1} ); - + When set, a data retrieved from a textual column type (char, varchar, etc) will have the UTF-8 flag turned on if necessary. This @@ -1825,9 +1807,9 @@ C). =head2 Easy migration from class-based to schema-based setup You want to start using the schema-based approach to L -(see L), but have an established class-based setup with lots -of existing classes that you don't want to move by hand. Try this nifty script -instead: +(see L), but have an +established class-based setup with lots of existing classes that you don't +want to move by hand. Try this nifty script instead: use MyDB; use SQL::Translator; @@ -2046,7 +2028,7 @@ mechanism: sub query_start { my $self = shift(); my $sql = shift(); - my $params = @_; + my @params = @_; $self->print("Executing $sql: ".join(', ', @params)."\n"); $start = time(); @@ -2116,7 +2098,7 @@ time, but not so large that the table is locked for an unacceptably long time. If using L instead, use a transaction and commit every C rows; where C gives you the best performance without -locking the table for too long. +locking the table for too long. =item *