Selecting from and updating the same table oracle avg hangs updating virus definitions

The update query below shows that the PICTURE column is updated by looking up the same ID value in CATEGORY_ID column in table Categories_Test and Categories. If you need to update multiple columns simultaneously, use comma to separate each column after the SET keyword. Here we only want to update PICTURE column in Categories_Test table where the data in Category_Name column is Seafood in table Categories. Software and hardware names mentioned on this site are registered trademarks of their respective companies.Should any right be infringed, it is totally unintentional.You can also perform more complicated updates in Oracle.

Due to this issue, beginning with My SQL 5.6.4, statements are flagged as unsafe for statement-based replication.The Oracle UPDATE statement is used to update existing records in a table in an Oracle database.There are 2 syntaxes for an update query in Oracle depending on whether you are performing a traditional update or updating one table with data from another table.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 that employ row-level locking.) In My SQL 5.6.6 and later, only those partitions of the source table that are actually read are locked, although all partitions of the target table are locked.

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See Section 19.6.4, “Partitioning and Locking”, for more information.T-SQL is designed to be set-based, so it works on entire sets of data as a whole; it should NOT be used to work on data line-by-line.

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