Callable code installed on a database manager, exposing an API through which it can be invoked. Normally written in the native query language, some DBMS platforms support other languages as well.

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7
votes
4answers
5k views

Do SQL Server stored procedures cache data results?

I have heard this from friends, but I never investigated whether this is true. Is it true that the data results of an executed query are stored in cache? I mean, if I have a stored procedure like : ...
6
votes
2answers
1k views

Conditional compilation of SQL Server stored procedure

Short version: Is there some way to conditionally compile chunks of TSQL code in a SQL Server Data Project using SQL Server Data Tools for Visual Studio 2010? I'm using SQL Server Data Tools in ...
6
votes
2answers
1k views

Stored Procedures Best Practices: Fenced or Unfenced?

I believe I understand the reasons behind fenced and unfenced stored procedures. Fenced run "outside" of the database (in our case DB2) so as to prevent possible corruption of the database engine ...
6
votes
2answers
646 views

Most efficient way to return multiple aggregates in a single stored proc?

What is the best or most efficient way to get multiple aggregate result values? Basically I have an email app and wanted to get all the numbers of messages for each type of folder (inbox, sent, ...
4
votes
1answer
6k views

Is ASYNC_NETWORK_IO wait type anything to worry about?

In looking at the list of sprocs that take long time to execute, one stands out as causing the most wait. However, most of that wait (81%) is ASYNC_NETWORK_IO and I know why: the sproc transfers ...
4
votes
1answer
111 views

Is it possible to encapsulate a table in MySQL?

I am new to Databases. I want the following: UPDATEs in a database to happen only through a stored procedure The user does not have GRANT UPDATE The user has GRANT EXECUTE ON PROCEDURE I tried it ...
4
votes
2answers
12k views

CASE ORDER BY with multiple columns, and different sort options

I am attempting to use a T-SQL CASE ORDER BY in a stored procedure where I am passed @OrderBy parameter as a TINYINT. @Orderby = 1 Then Date column should be ASC @Orderby = 2 Then Date column ...
3
votes
1answer
12k views

MySQL stored procedure: loop through table, delete rows. Logic problem: won't exit loop because of LIMIT option in query

I've created a procedure to loop through large InnoDB tables and delete a chunk of rows, then pause and repeat until max field value allowed is reached. Binary logging is enabled, but I'm leaving it ...
3
votes
2answers
5k views

SQL Server 2008 T-SQL select hanging, but not dead locked

This is a pretty strange issue so bear with me. I have a stored proc that does some heavy duty processing. When it runs well it usually takes a few minutes depending on server load, but occasionally ...
2
votes
2answers
529 views

Insert/Update Stored Procedure

My database model is quite simple. I have the following tables: Monitor, Computer, and Monitor_Computer_Map as my mapping table for a many-to-many relationship between the other two tables. I have a ...
2
votes
1answer
292 views

MySQL: Securing Access using Stored Procedures

I'm new to using MySQL. I'd like to use stored procedures to help secure my database when accessing it from a web service (i.e., grant only proc execute to the web service account). What permissions ...
2
votes
1answer
6k views

Declare variable of table type in PL/pgSQL

I am wondering if there is a way to declare a variable of type table in PL/pgSQL to hold query results? For instance how can I express something like: q1 = select * from foo; q2 = select * from bar; ...
2
votes
1answer
143 views

How to know what to investigate and how for a VERY slow stored procedure

I have inherited a large and slow stored procedure and it's giving me a nightmare: I'm not a DBA, although I have some knowledge, but I don't know where to start to identify this bottleneck. I have ...
2
votes
1answer
1k views

performance issues when concurrent requests

We are using SQL Server 2008 R2 on a Windows Server 2008 server. We have some main functions which uses some Stored Procedures which has a lot of sub-queries inside of it. I'll take one SP as an ...
2
votes
1answer
541 views

Stored Procedure doesn't show result in SQL Server

I have created a stored procedure (to be used in SSRS) that has parameters whose values are more than one. When I execute this stored procedure in SSMS by providing the values for that parameter, SP ...
2
votes
1answer
914 views

How to use the 'select benchmark' command on a procedure

I am trying to check which of my procedures is slowest and thus needs optimization. I currently have around 160 procedures and about 30 functions. I am using the select benchmark() to check the ...
2
votes
1answer
105 views

don't want to be able creating stored procedures with incorrect

Right now I can execute a CREATE PROCEDURE or an ALTER PROCEDURE script with incorrect table and column references in the MS SQL Server Management Studio and using ADO.NET commands. The scripts run ...
1
vote
2answers
1k views

multiple select query for the same tables with union [closed]

Using below query i want to find out the top number of students from each catagory(SC,ST,OBC,etc) on plus2percentage basis. eg i want top 3 students from SC catagory, top 2 from ST and Top3 from OBC. ...
1
vote
1answer
535 views

How to run stored procedure in another database on the same server using a different login?

I have 2 databases (A and B) on the same server. Database A has user ua defined, and database B has user ub defined. I have a stored procedure in A, running as ua, that needs to run a stored ...
1
vote
1answer
10k views

What is the best way to insert a XML input to an oracle table in stored procedure?

I want to write a stored procedure which has a XML input (clob type) and inserts the data to a table. my XML structure is something like this: <rowset> <row> ...
1
vote
1answer
1k views

Concatenation of setof type or setof record

I use Postgresql 9.1 with Ubuntu 12.04. In a plpgsql function I try to concatenate setof type returned from another function. the type pair_id_value in question is created with create type ...
1
vote
3answers
2k views

SELECT Data Set Using Stored Procedure with BCP Error

All, I have a BCP export query. It is failing with the useless error mesage on BCP usage: usage: bcp {dbtable | query} {in | out | queryout | format} datafile [-m maxerrors] [-f ...
1
vote
1answer
3k views

MySQL: how to optimize the stored procedure?

MySQL 5.5.28 Running pt-query-digest on a slow query log, I get something like this: # 1.2s user time, 10ms system time, 22.30M rss, 114.48M vsz # Current date: Wed Oct 24 23:44:05 2012 # ...
1
vote
1answer
316 views

Why are these queries slow in some environments and not others? Can we fix their performance?

The following stored procedures in a MySQL 5.x environment: DELIMITER // CREATE PROCEDURE sp_belongs_to (IN schemaName VARCHAR(100), IN tableName VARCHAR(100)) BEGIN SELECT TABLE_NAME as ...
0
votes
1answer
36 views

Getting error while installing log4db2 utility

DB21034E The command was processed as an SQL statement because it was not a valid Command Line Processor command. During SQL processing it returned: SQL0601N The name of the object to be ...
0
votes
0answers
130 views

prevent sql injection inside stored procedure

I finally found a solution for the following question: reading input parameter values in stored procedures However I'm not sure, whether this solution is resistant to SQL injections. I'm using ...
0
votes
1answer
230 views

reading input parameter values in stored procedures

I'm using the current version of MariaDB 10.0.12 . I created a stored procedure as specified in the accepted answer for the following question: ...
0
votes
1answer
108 views

Can MySql nested SP be a bottleneck?

We have this MySQL SP, which calls a nested SP. It seems it does NOT perform well under load. It is possible that this SP becomes slow under load because it calls a nested SP and uses temporary ...
0
votes
2answers
382 views

Example optimisic offline lock in SQL/PL?

Can someone show me an example of an optimistic offline lock in an Oracle Stored Procedure?
0
votes
1answer
124 views

TSQL - Bringing Data Together from Different Sources …refactoring PK and FKs

I have various offices and one central head office. Each office has its own SQL Server instance so each office has its own data set with its own set of IDs. Each office has already imported data ...