- #Sqlite stored procedures install
- #Sqlite stored procedures update
- #Sqlite stored procedures windows
Par5 blob, par6 blob, par7 blob, par8 blob, par9 blob ) ĬREATE TRIGGER Fakt after UPDATE OF job ON stackįOR EACH ROW WHEN new.job='Fakt' and argc()>=1
Par0 blob, par1 blob, par2 blob, par3 blob, par4 blob, Level integer, inserted float, returned float, - some debug support
result() fills the column result and will be the return value for callĬREATE TABLE stack( job text, - the function name which will fire the trigger. JobLevel() return the recursive depth of calls from the level column. argv() returns one parameter from the recent stack table record. argc() returns the count if non-NULL parameters. 
#Sqlite stored procedures windows
Debug() sends output to Windows function OutputDebugString. The stored function itself and the stack table looks like the following: Here is an example for the recursive form of the faculty for number 6 ( = 1 * 2 * 3 * 4 * 5 * 6 = 720 ), 7! = 5040, 8! = 40320 D:\SQLite3x\sandbox>sqlite3 LoadExTest.SQB I am controlling this for debug purposes, too. The trigger itself calls a function return, which can be filled into the stack record but more important becomes the return value of the "call" extended function call and therefore is then the reply into the original sql statement, which caused the trigger to fire.īecause all this happens in scope of the same db context the stack leaves only a trace if there was no delete all from stack happening. The trigger itself can work with all the parameters from the stack record, a helper extension function supports this task. The call function inserts the parameters into a table with name "stack", which fires a trigger which is watching the name, the first parameter of my call. I named my function "call" and its first parameter is the name of the procedure and the other parameters are the inputs to that function. Since many more than 10 years I am using therefore my own extension functions to mimic such a feature. stored_procedure_name when you create it.Until now SQLite3 does not support Stored Procedures (at least as far as I am aware)Īre there any plans to introduce also Stored Procedures into SQLite3 ? To associate the procedure with a given database, specify the name as database_name. By default, a procedure is associated with the default database (currently used database). Others (DB2, Mimer) also adhere.įollowing statements create a stored procedure. Stored procedures are migratory! MySQL adheres fairly closely to the SQL:2003 standard. And it makes sense to link the data with the processes that operate on the data. Stored procedures are always available as 'source code' in the database itself. That's the advantage of writing in SQL rather than in an external language like Java or C or PHP. #Sqlite stored procedures install
When you write your stored procedure in SQL, you know that it will run on every platform that MySQL runs on, without obliging you to install an additional runtime-environment package, or set permissions for program execution in the operating system, or deploy different packages if you have different computer types. If you have a repetitive task that requires checking, looping, multiple statements, and no user interaction, do it with a single call to a procedure that's stored on the server. The main speed gain comes from reduction of network traffic. MySQL server takes some advantage of caching, just as prepared statements do.
MySQL Procedure : Parameter INOUT example.MySQL Procedure : Parameter OUT example.
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