3
votes
1answer
498 views

How to Model / Quickly test for set membership in SQL?

Each row in a table needs to be protected a list of application specific roles lets say something that looks like this example below Desired Table Structure pkey | data | roles ----------------...
1
vote
1answer
176 views

clusterdb stopped working for PostgreSQL database in Ubuntu 12.04 server

After a fresh PostgreSQL install (version 9.2) on my Ubuntu server 12.04, clusterdb utility stopped working. I used the same config files as I used with version 9.1. Below is the actual command: ...
1
vote
1answer
105 views

Appropriate Action for Dead Locks / Blocking

I've setup my databases so that anytime a procedure is blocked for more than 45 seconds the database notifies the DBA email. Is it bad practice to setup a way to auto kill the process that is doing ...
5
votes
2answers
3k views

SQL Server 2008 R2 Restore COPY_ONLY full backup with transaction logs

After doing some research I cannot seem to find an answer to this question. Background I am attempting to setup a backup plan that fits the following three requirements: Reliability of backups, ...
1
vote
2answers
130 views

What settings should I use in my.cnf

We have about 5-6 different internal webapps (staff use only) that we will be transferring across to a new virtual server, however I need to setup our my.cnf settings first and I am lost (I am web ...
0
votes
1answer
3k views

Cant start SQL services

So I am having issues starting my SQL services. Currently it is failing the start due to: FileMgr::StartLogFiles: Operating system error 2(The system cannot find the file specified.) occurred ...
0
votes
2answers
3k views

SQL Server 2008 Restore

I'm trying to restore from a database backup to SQL Server 2008. The backup came from a different server. I'm executing the following query: RESTORE DATABASE Database_Name FROM DISK = 'C:\Path\To\...
1
vote
1answer
27 views

Reserving dates with quantities, table schema wrong?

Okay I have a table like so. ID Productname Quantity Image QuantityOut LastDateReserved 1 productOne 5 'image.jpg' 3 2013-03-15 2 ...
5
votes
3answers
5k views

Is it ever harmful to set a database owner in SQL Server?

There are a bunch of databases on one of our SQL servers that have no owner. Generally speaking, is it harmful to give them one? For example: USE dbName; GO EXEC sp_changedbowner 'sa'; GO I know ...
3
votes
1answer
177 views

Custom sp_who/sp_whoUsers

I need to allow a client in a dev DW SQL 2K8R2 environment, to view and kill processes, but I do not want to grant VIEW SERVER STATE to this person (he's a former sql dba and is considered a potential ...
2
votes
1answer
927 views

sysadmin cannot drop login when ddl audit trigger enabled

I have a DDL trigger defined for database- and server-level events in SQL Server 2008R2 (Standard) which exists to log all DDL events into an audit table in an admin database. It's only function is ...
3
votes
1answer
5k views

Create Temp Table From Stored Procedure Result

Is it possible to create a temp table from a stored procedure result set without having to specify column datatypes? If not, is it possible to create a physical table at least from the SP? The reason ...
0
votes
0answers
142 views

trap xp_logininfo stored procedure error

Sql server 2000, windows 2003 server. I am trying find all the invalid domain login creates in sql 2000 server in a script using xp_logininfo and get message "Could not obtain information about ...
2
votes
1answer
297 views

Load sybase .db into new sybase developer server

We've got a few .db files laying around here which were created by Sybase (version 8.x, I guess) and I've the task to extract some data from those old databases. Now I've installed the latest Sybase ...
1
vote
1answer
71 views

INNODB real-time locks?

How can I view real-time locks in innodb when information_schema.innodb_locks is not available?
1
vote
0answers
115 views

Unable to decompose this relation to BCNF

I have a relation R = { A, B, C, D, E, F, G, H, I } And functional dependencies F ={ ABC -> DE E -> C AB -> F C -> G F -> H H -> IJ F -> B } I am able to do simple BCNF ...
6
votes
3answers
11k views

Investigating high SQL waits, especically LCK_M_U

Recently I have been struggling with SQL server performance and although we have fixed a huge multitude of basic errors in the config it is still performing badly. To clarify it is not overall ...
5
votes
2answers
707 views

Update strings for all cmdexec Jobs

Does anyone know if it's possible, (and furthermore advisable) to update all cmdexec strings in jobs on a server? We'd like to change our logging location, and in principle I'd think this could be ...
2
votes
4answers
2k views

Merge Replication identity field issues

One of our clients is using our software with merge replication of a database on a SQL Server 2008 R2 machine. There are two production environments in separate geographical locations only one of ...
5
votes
2answers
10k views

Very slow DELETE in PostgreSQL, workaround?

I have a database on PostgreSQL 9.2 that has a main schema with around 70 tables and a variable number of identically structured per-client schemas of 30 tables each. The client schemas have foreign ...
7
votes
1answer
5k views

VACUUM returning disk space to operating system

VACUUM usually does not return disk space to operating system, except in some special cases. From the docs: The standard form of VACUUM removes dead row versions in tables and indexes and marks ...
2
votes
1answer
2k views

Execute sp_WhoIsActive as a query

I am at a client where they don't allow Adam Machanic's sp_WhoIsActive stored procedure to be installed anywhere on the SQL server. Does anyone have any suggestions for running it as a query instead?
2
votes
1answer
498 views

Need to suppress rowcount headers when using \G

Is there a command to suppress the rowcount headers and asterisks when using '\G' to execute a SQL statement? I am executing mysql with the -s and --skip-column-name options, but these don't suppress ...
0
votes
0answers
86 views

Checking of one specific element of one array is in another array?

Suppose I have two arrays. One looking like (3, 9, 10, 39), and one looking like (4, 10, 9, 48, 391, 2). How would I (through pure MySQL) check if one of the elements in the first array is inside the ...
2
votes
1answer
804 views

MySQL monitor prompt does not return for slave

I'm trying to fix a replication error (or an ongoing failure to replicate) between our master and slave MySQL databases. The procedure I have asks me to use MySQL Monitor to stop the slave. stop ...
1
vote
4answers
7k views

How can I replicate some tables without transferring the entire log?

I have a mysql database that contains some tables with private information, and some tables with public information. I would like to replicate only the tables containing public information from one ...
28
votes
6answers
42k views

In what data type should I store an email address in database?

I understand that an 254 character email address is valid, but implementations I have researched tend to use a varchar(60) to varchar(80) or equivalent. For example: this SQL Server recommendation ...
2
votes
1answer
1k views

Create database on new partition

I use postgresql 9.1, on ubuntu 12.04. I had installed the depot package. I have added a new partition to my system, and I would like to create a postgresql database on this partition ( which will be ...
35
votes
5answers
86k views

Difference between database vs user vs schema

I'm really confused with the terms database, user and schema. Can anyone explain how they are different from each other (if they are)? If they are same then, what are the similarities between them? ...
2
votes
1answer
3k views

How do I check if a constraint exists on Firebird?

I'm about to publish a script which will update a lot of Firebird databases all at once. Some will not have this constraint, so I would like to check for the existence of a constraint before I try to ...
0
votes
1answer
497 views

READ_COMMITTED_SNAPSHOT support in SQL Server 2005 Express

I wonder if SSE 2005 supports the READ_COMMITTED_SNAPSHOT database option. What I found is this article: Features Supported by the Editions of SQL Server 2005. It states that SSE 2005 supports ...
-1
votes
1answer
357 views

How can I move 5 GB data from one database to another faster?

I'm using MySQL as database with Windows server. I'm having 5 GB of data in database. Now I need to change my server and the question is that how can I transfer complete 5 GB data to one mysql ...
1
vote
2answers
645 views

Why would splitting up a query make it faster, and can I/should I fix this?

The following query is for a web-based game. It sets the isTiedForHighScore column to true for all solutions that tied the score for a given "map." UPDATE solutions INNER JOIN ( SELECT mapID, ...
0
votes
0answers
122 views

SQL Server in a state of confusion: Does the database exist or doesn't it? [duplicate]

Got a really weird, annoying problem.. Somehow the instance of SQL Server 2008 R2 running on our server has gotten somewhat corrupted. First, we noticed that the database we created yesterday was ...
8
votes
6answers
11k views

SQL Server in a state of confusion: does the database exist or doesn't it?

Got a really weird, annoying problem.. Somehow the instance of SQL Server 2008 R2 running on our server has gotten somewhat corrupted. First, we noticed that the database we created yesterday was ...
1
vote
1answer
1k views

Segmentation fault (core dumped) with self-complied mysql-5.1.9-beta.tar.gz

I am compiling mysql-5.1.9-beta.tar.gz source code under Ubuntu 12.04. My steps are following: tar -xzf mysql-5.1.9-beta.tar.gz cd /home/gaoyu/mysql-5.1.9-beta ./configure --prefix=/home/gaoyu/mysql-...
2
votes
1answer
1k views

Retrieving all PK and FK

I have a big database that I need to extract all primary keys and foreign keys from each table. I have pgAdmin III. Is there a way to do this automatically and not go over each table manually?
0
votes
2answers
430 views

Is there any way to find out when particular view was compiled?

I have an Issue with a view, recently I made changes to the view and committed the code (in SVN). Code was moved to another repository and compiled, but my modifications are not reflected. I searched ...
2
votes
3answers
3k views

get account activity in postgresql

I have a old DB with bunch of accounts. One of them is used for sure but for 5 of them or so there is no information. Is there any info in the system table in Postgresql when was the last login or ...
2
votes
5answers
253 views

How to determine if a postgres database needs to be vaccumed?

Given a PostgreSQL database what command can be used to determine if the database needs to vacuumed? UPDATE I am working with client who is evaluating postgres but I am not a DBA, I just happen to ...
1
vote
2answers
6k views

MySQL data too long error

One of the column in my table was initially created as a varchar(1000). Now there is a need to increase the size of that column to hold around 5000 characters. I used the alter statement to increase ...
2
votes
1answer
890 views

Best practice around sys.dm_db_missing_index_group_stats in SQL Server

I have a fairly simple query using sys.dm_db_missing_index_group_stats that identifies missing indexes in my SQL Server database. This is pretty commonly used. My question is how do I identify which ...
5
votes
3answers
3k views

What type of SQL Server Replication fits our scenario? Merge or Transactional?

Background In our current setup, we have a single SQL Server 2005 instance on our remotely hosted web server. We additionally have another (non-MSSQL) database which we use for our POS system, which ...
6
votes
1answer
188 views

What is a good way to determine the performance I should expect from a PostgreSQL server?

Trying to figure out how I should expect my database to perform. Basically, I need to determine when the server I have set up is reaching its performance limits - which would help me plan server ...
1
vote
1answer
612 views

Postgresql: Difference between pg_dump and backup/restore?

Don't they essentially do the same thing by storing all the data in a file and dumping it into another database? Is it that pg_dump just adds the data on to whatever is already there and restore ...
2
votes
2answers
2k views

What does wait_resource LOG_MANAGER mean in SQL Server 2008?

Let's say we have two Stored Procedures A & B within the same database. Stored Procedure A: Executes for a long time Has transactions within Makes Calls over Linked Server Stored Procedure ...
6
votes
1answer
1k views

UNIQUE index key violation

I have a table with a PK and a unique non-clustered index, as follows: CREATE TABLE Table1 ( Id INT IDENTITY(1,1) NOT NULL, Field1 VARCHAR(25) NOT NULL, Field2 VARCHAR(25) NULL, ...
0
votes
2answers
5k views

how to set a row's value from a certain row's value?

I have a MySQL table named "activities" with fields id(int), tstamp(timestamp), amount(decimal) balance(decimal). Decimal fields hold money values. id tstamp amount balance -----...
1
vote
1answer
135 views

big db for managing user files and settings

Hi im about to start a project that will hopefully eventually hit milion+ users which is some kind of a site managment, problem is how to set the db in mysql, some people suggest way 1 and others way ...
12
votes
6answers
9k views

Find “n” consecutive free numbers from table

I have some table with numbers like this (status is either FREE or ASSIGNED) id_set number status ----------------------- 1 000001 ASSIGNED 1 000002 FREE 1 000003 ...

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