These operations may cause incorrect data inserted only in the case of using the Table expressions in the query, I mean using the SELECT expression within the operations INSERT, UPDATE and DELETE. A detailed explanation plus some other problems found with the SQL aggregate operators is found in my book: Amazon.com: Lulu.com: Joomla provides a sophisticated database abstraction layer to simplify the usage for third party developers.
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The SQL problems studied in the posts on this site can become a serious trouble when updating a database; I mean update in terms of insert, delete and update as such a database.
The JDatabase Query class provides a number of methods for building insert queries, the most common being insert, columns and values.
Notice here that we do not need to escape the table name; the insert Object method does this for us.
This can be confusing for Australian consumers and healthcare professionals who travel internationally, as well as people like doctors who have trained overseas or people trying to access medicine information online.
We are updating some medicine ingredient names used in Australia to align with names used internationally.
There are several possibilities in technology at the time of updating a database, for example, we have the case of input data to an information system, when we are migrating a database to a new one that usually has a different structure, in the case of updating a distributed databases that are spread in different locations, when we are loading data to a Data Mart, and a number of other possibilities, in all of them we must be aware of the danger of inserting data into a database when we don’t know the weaknesses of SQL.
In this case the problems go beyond query results, we know that the only way to update a SQL database is by using the language SQL, in the case of an information system a simple interface could let us put data in it which could erroneous data in database, from there on we could never trust in the query results anymore The possibility of erroneous data in SQL databases is present with standard operations INSERT, UPDATE and DELETE.
There are also methods such as insert, update and delete for modifying records in the data store.
By chaining these and other method calls, you can create almost any query against your data store without compromising portability of your code.
New versions of the Joomla Platform API provide additional functionality which extends the database layer further, and includes features such as connectors to a greater variety of database servers and the query chaining to improve readability of connection code and simplify SQL coding.