Sometimes, we may need to cast one data type to another. Here is how we can cast to decimal in MySQL using theCAST()andCONVERT()functions withDECIMAL(M,D). ADVERTISEMENT We can use theCAST()function to convert
It’s also important to note that different SQL implementations will behave differently when running queries that useCASTfunctions to convert data types. Running a query with aCASTfunction in MySQL could produce different results than running the same query in PostgreSQL, for exam...
CASTin MySQL The basic syntax of theCASTtechnique can be illustrated as follows. SELECTCAST(column_name)ASdata_typeFROMname_of_table; As we can see, in the aforementioned query, thecolumn_namerefers to the name of the column for which we aim to change or assign the data type which is ...
I made quite a complex View on my MySQL database, and I realized that some queries are slow. My first idea was to add indexes but it's not possible to do on a view so I'm lost on how to improve the performance of my query. ...
MySqlClient.MySqlConnection cannot be cast to [B]MySQL.Data.MySqlClient.MySqlConnection. [C#] How to make the Console Process delay [C#] Oracle.DataAccess issue - Unhandled exception of type System.TypeInitializationException occured in mscorlib.dll [C#] Regex - Best Validation of Domain? [C#]...
A USE database statement is not allowed in a procedure, function or trigger. A week this year Against a week this time last year in SQL (NOT MDX) A WITH keyword and parenthesis are now required Accent Sensitivity Access Code - DELETE Statement with DISTINCTROW and T-SQL Access Now() vs...
CASTis a built-in SQL conversion function that converts a value from one data type to another. You may use this function to convert a string to a date or extract a date from DATETIME. The syntax for theCASTfunction is as follows: ...
In the next post, we will see how to use recursive queries to explore hierarchical data (X-is-a-child-of-Y). And, as always: select from_base64('VGhhbmsgeW91IGZvciB0cnlpbmcgcmVjdXJzaXZlIENURXMh') as final_words; +---+ | final_words | +---+ | Thank ...
This function implements connection with the database and returns a connection identifier. This ID will be required to query the database. In case of a connection failure, the return value is "-1". For the error details, check the variables MySQLErrorNumber and MySqlErrorDescription. Typically...
In server side, either use CAST or CONVERT field within the SELECT statement [http://dev.mysql.com/doc/refman/5.6/en/cast-functions.html#function_cast], then retrieve it with ResultSet.getDouble(n). I'm using doubles in my suggestions but you should use the numeric type that's more ap...