Updating multiple rows without cursor
security for use cases when an arbitrary collection must be modified. Right now it seems that the security advantage can very easily be bypassed from the console, and the downside is a drastic reduction in update performance on the server.This is actually a pretty important use case for Meteor: integrating with widget libraries that operate on multiple records from a collection they are passed. It is very important not to allow running arbitrary selectors from clients.
This is how you can avoid the 'client can modify arbitrary collections' issue you mention.PDF (US Ltr) - 27.1Mb PDF (A4) - 27.1Mb PDF (RPM) - 26.1Mb HTML Download (TGZ) - 6.6Mb HTML Download (Zip) - 6.6Mb HTML Download (RPM) - 5.6Mb Man Pages (TGZ) - 168.6Kb Man Pages (Zip) - 277.1Kb Info (Gzip) - 2.2Mb Info (Zip) - 2.2Mb My SQL Backup and Recovery My SQL NDB Cluster 7.2 My SQL Globalization My SQL Information Schema My SQL Installation Guide My SQL and Linux/Unix My SQL and OS X My SQL Partitioning My SQL Performance Schema My SQL Replication My SQL Restrictions and Limitations Security in My SQL My SQL and Solaris Building My SQL from Source Starting and Stopping My SQL My SQL Tutorial My SQL and Windows clause, are flagged as unsafe for statement-based replication.(This is because the order in which the rows are updated determines which rows are ignored.) With this change, such statements produce a warning in the log when using statement-based mode and are logged using the row-based format when using mode.(Bug #11758262, Bug #50439) See Section 22.214.171.124, “Determination of Safe and Unsafe Statements in Binary Logging”, for more information.If you access a column from the table to be updated in an expression, assignments are generally evaluated from left to right.For example, a grid component may want to delete a batch of records as a response to a user action, or a reorderable list component may need to update multiple indexes for its items at once. By running carefully constructed selectors, a client can actually read unpublished data, including secret tokens! searchin/meteor-talk/0.5.8/meteor-talk/q Ua3clv4g5E/N7F8Ia AX5Ag J for details. Well, you have to get the collection name from the client to the server somehow.
Your options are basically to have it as an argument to the method (as you mention), or to have it in the name of the method (like the default methods controlled by allow/deny). Just a question of how you want to structure your code.
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If you update a column that has been declared , an error occurs if strict SQL mode is enabled; otherwise, the column is set to the implicit default value for the column data type and the warning count is incremented.
The implicit default value is tables for which there are foreign key constraints, the My SQL optimizer might process tables in an order that differs from that of their parent/child relationship. Instead, update a single table and rely on the provides to cause the other tables to be modified accordingly. COLUMN2 IS NULLAn outerjoin is performed based on the equijoin condition.
When asked the reason was he had no idea how to use multiple tables with the help of the JOIN clause in the UPDATE statement. Additionally, we want to update the values of Col2 and Col3 only.