0
votes
2answers
62 views

is Master-Master replication ok for me?

I have two separated locations connected by a not too reliable VPN. I have a common system that depends on MYSQL that read/write tables. Will master-master replication keep both locations in sync? I ...
1
vote
1answer
91 views

RDS Postgres Peformance

I have recently set up a new RDS instance to test out working with a AWS postgres instance vs a heroku postgres instance. What I've found is that when I load an instance of 1000 entries in RDS its ...
2
votes
1answer
166 views

Filtering by minimum value per group problem

I have a select statement, which when simplified produces the following: +------------+----------+-----+ | Group | Name | ID | | vegetables | potatoes | 1 | | vegetables | carrots | 6 |...
0
votes
1answer
137 views

Result occurs often with fast random select query

I have this query to display 4 random photos on a website (I have it from here (when I asked for something faster than ORDER BY RAND())): (SELECT `p1`.`id`, `p1`.`url`, `p1`.`hits`, `p1`.`...
1
vote
2answers
40 views

Is checking for optional characters required in mysql REGEXP?

I have a few rows, in a users table with a name column: SELECT name FROM users; +--------------------+ | name | +--------------------+ | Administrator Core | | Marketing Guy | +----...
5
votes
2answers
8k views

ERROR 1054 (42S22): Unknown column 'plugin' in 'mysql.user'

I am trying to grant privileges for a user to a new database mysql> grant all on db_test.* to 'user_test'@'localhost' identified by 'usersexistingpassword'; I get the following error ERROR 1054 ...
4
votes
1answer
208 views

Column Store Index over an clustered index (created when primary key is declared) - SQL Server

When a clustered index is created, the table itself becomes the index structure sorted by the index key. Imagine now that we have 5 columns in a table XPTO (a,b,c,d,e) and "a" is the primary key and ...
3
votes
1answer
237 views

Partially contained databases and Windows Logins - best practices?

In versions of SQL Server prior to 2012, in order for anyone to log in to a database using Windows credentials, you first had to create a server-level login, them map that login to a user for each ...
0
votes
2answers
68 views

Can I Show Multiple “WHERE” Filtered Results In A Single Query/Output Table?

I am using Postgres 9.2.4 on Red Hat 6. Tables --------------------------------------- | Table 1 | --------------------------------------- | WorkflowID | DataSet | ...
5
votes
2answers
1k views

Scripting the copy of SQL Server production database to test environment

We are introducing continuous integration on our project and we decided to automate the refresh of our test database instance with fresh production data. I'm currently looking for the best way to go ...
2
votes
1answer
220 views

compare 2 tables with minus with a SDO Geometry shape column

if I have a column like SHAPE: CREATE TABLE SOL_PUBLIC.PUNCTE_PERIMETRU_SIT ( ID NUMBER(10) NOT NULL, NUMAR NUMBER(19), X ...
1
vote
2answers
195 views

DB2 10.5 - When inserting, the database is trying to reuse index keys on GENERATE ALWAYS

I am trying to insert a row into a database table which has a GENERATED ALWAYS primary key column. The table has over 1000 rows, and the primary keys start at 1. When I try to do an insert, the error ...
4
votes
1answer
169 views

Restoring database without worring about partitions

On our our production database there is a partitioned table called FullLog. This is updated via triggers so we know who changed the database and when. Which is a problem for me when I restore the ...
1
vote
1answer
442 views

Using TEXT or even MEDIUMTEXT for all text columns in a MySQL table?

I'm using a PHP script to insert millions of rows into a MySQL. Each of the rows contain a diversity of columns that are very different across the rows. Basically I'm using MySQL as a key-value pair ...
1
vote
1answer
1k views

Oracle cannot connect to SQL developer as sys account

I am trying to connect to SQL developer as sys account. It is always giving the error invalid username/password. When I try to connect it through SQLPLUS, it gets connect with any wrong password also....
0
votes
1answer
272 views

Table partitioning in MYSQL Master Slave

I have to Partition a MYSQL table using Range partitioning. Table is 200M rows big and I have Master/Slave replication. What I want to do is to stop replication on slave, partition the table on ...
1
vote
1answer
65 views

Combining data from 3 tables depending values stored in 1 table

I'm trying to make a SQL query to return values potentially from 3 tables. This will combine all booking information for a booking which can span over multiple days with multiple guests and a single ...
1
vote
1answer
42 views

MySQL: Incorrect binary log format - OFF.000

I have a Percona MySQL 5.5.30 as a master(Debian 6.0.7). I got a weird issue that all my binary logs started saving in format OFF.00* instead of the specified format in .cnf file. mysql> show ...
6
votes
2answers
2k views

Tracking down a stored procedure's parameters after execution

I have been asked to identify a permissions issue with a stored procedure. This stored procedure behaves in two possible ways depending on what values are used for its parameters. exec ...
0
votes
1answer
37 views

Entries with 2 variables. Do I need to make 2 more tables by entries?

In the case of shipment carriers, I have a table with products which price and delay will vary with 2 variables. PRODUCT | SHIPPING DATE | PRICE Carrier 1 | A | B Carrier 2 | ...
0
votes
1answer
65 views

How can i update table when counter reach a specific value? (thread safe) [closed]

I increase a field when somebody click the image. Also i want to update (decrease) customer budget when counter value reach to 1k. It is like that: UPDATE click SET count = count + 1 WHERE ...
0
votes
1answer
120 views

Cross Join and Left Join within a query

I have query which has a cross join and also a left join which produces an error Unknown column 'a.hour' in 'on clause' simplified version of query is like this SELECT b.*,a.hour,c.datetime FROM ...
2
votes
1answer
309 views

unknown variable 'log_slow_verbosity=query_plan'

What is the use of log_slow_verbosity = query_plan parameter in my.cnf ? I got an error when installing MySQL in my machine because of this parameter.
1
vote
1answer
40 views

UPDATE with Nested Query

This is what i've tried UPDATE (SELECT * FROM music GROUP BY songalbum) SET albumID = (SELECT albumID FROM albumList GROUP BY album ) WHERE songalbum = albumList.album this give the error #1248 ...
1
vote
1answer
18 views

incorrect result when filtering by association

I have a docket, which has many entries. I want only dockets, where none of the associating entries contains the text "PENDING". For example, if docket A has 10 entries, and one of those entries' ...
0
votes
1answer
88 views

How to prevent #Error values derived from Nulls in an outer join

Suppose I have two tables to outer join Tab1: ID Nam 1 Joe 2 Moe 3 Flo Tab2: ID Val y w 1 stuff 66 33 2 duff 67 44 and one of the resulting columns is derived -- i.e., it'...
2
votes
1answer
90 views

How to optimize this MySQL query?

Hi can someone help me to optimize this MySQL query, it's taking very long to complete, I have set indexes correctly, but it seems that string operations are slowing this query SELECT vendor_products....
1
vote
0answers
30 views

Why do I get this syntax error? [duplicate]

Here's the create statement pulled out of the database itself for a trigger: CREATE DEFINER=`walkdot_logan`@`67.53.251.66` TRIGGER `wd_artists_bi_trg` BEFORE INSERT ON `wd_artists` FOR EACH ROW BEGIN ...
0
votes
1answer
66 views

Version error while restoring database [duplicate]

Can anybody resolve the issue where I am trying to restore a database to a SQL Server 2008 server from a backup file taken from a SQL Server 2008 R2 server?
1
vote
0answers
169 views

Problem forming a query with subqueries in design view? (MS Access 2010)?

I just started a new job as a dbase admin intern, and due to the database being very large, it is better to do queries in design view, rather than hardcoding the sql. That being said, I cant seem to ...
1
vote
1answer
39 views

mysql how to replace a column content

I using Mysql. Table: Content_T1 id : int title : varchar255 content: text my all page content will be save in content columns. mysql content column... there is some <img src="http://abc....
1
vote
0answers
38 views

How does 'exists' affect output

I previously asked a question about how to organize a long search query. I have taken it apart. I am presently attempting to understand the function of some of its parts. Specifically, I am ...
2
votes
1answer
17 views

Retreive a Customized List with input data

I have a database that has about 223 tables and I need to locate the name of the constraint. My request is to add a parameter that is the name of the constraint and you retrieve a list that shows the ...
5
votes
1answer
139 views

SQL Server 2012 Crashes and service doesn't restart

We've been having an issue with our SQL server lately. It seems that the server will run out of memory and then crash. For some reason, the sql service wouldn't restart. I would have to go and ...
6
votes
1answer
1k views

Query Plans Change Performance Worse in SQL Server 2014

We recently upgraded our server from SQL Server 2008R2 to SQL Server 2014. We have a query that ran fine in 2008R2 but now in 2014 runs incredibly much slower and has a bad execution plan. I've done ...
0
votes
1answer
69 views

Problem with UNION ALL

I have to process 200 points (lat, long) to calculate the minor distance of same object (street in this case). So, I made a simple query to obtain 1 result, and replicate the same to the other 199. (...
0
votes
1answer
2k views

SQL Developer - trying to import an excel file into a table

I'm trying to import an excel file into a table. The excel file has dates in the following format: 20/08/2008 12:00:00 AM and I am telling SQLDEV the following: DD/MM/YYYY H24:MI:SS AM To import the ...
1
vote
1answer
115 views

Finding same values and updating rankings

thank you for taking the time to look at this. I have a simple table that I am trying to update based on the entries. table name is TOPUSER and there us a field called tu_total and tu_rank, I would ...
2
votes
1answer
615 views

How to reinitialise /var/lib/mysql files?

Due to a mishap I deleted the entire /var/lib/mysql directory. Since the database did not contain anything important, I do not want to go through the hassle of restoring it from an old backup, but ...
0
votes
1answer
123 views

Error using view to limit data access between databases in SQL Server [duplicate]

I am trying to limit user access to data through a view. I have a database full of replicated data that I do not want the users to be able to access, I also have a reporting database in which I will ...
2
votes
3answers
388 views

How to use “BACKUP DATABASE”, but the database is in a different server.? [closed]

We have 3 servers ( SQL SERVER 2008 ). Is there a way to backup a database, connected in a different server? Example: i'm on SQL1. I want to do something like this: BACKUP DATABASE [SQL2]....
4
votes
1answer
443 views

SQL Server 2008 R2 Lockup for 10 minutes

Last Saturday night, our site went down for about 10 minutes. Analysis of the logs showed the following errors on the principal SQL Server (in a mirrored pair), during the outage and not outside the ...
1
vote
1answer
141 views

Disk Read IO Throttle not showing in perfmon Windows Server 2012 r2

I am working on Windows Server 2012r2,SQL Server 2014. I am trying to create a new data collector to review Disk IO in perfmon. When I get to the step to add the available counters there is no Disk ...
0
votes
1answer
439 views

SQL Server Data File/Log File poor performance

I've been asked to look at a database/application server that's "performing slow". No one could really tell me what was performing slow (except for the database backups) so this has been a discovery ...
0
votes
1answer
53 views

Connecting 4 tables - finding some differences between them

I have 4 tables in a Oracle database: SOL_PUBLIC.SOL_CHEST@RACDB (PUB): ID ... 100 ... 200 ... 300 ... SOL_PUBLIC.COORD@RACDB (PUB): ID FK_ID_CHEST x y 1 100 11 11 2 200 ...
1
vote
1answer
157 views

Querying XML with Unicode data

I'm trying to select attribute value from XML column using XPath with a parameter that can be a Unicode string. Could you please tell me how to make these two examples work? create table #test ( ...
2
votes
1answer
144 views

SQL Server tempdb rogue temporary tables

I've got some rogue temporary tables being generated which is starting to cause disk space issues. The database creating these tables is fairly large and I'm unsure what stored procedure/function etc ...
-2
votes
1answer
182 views

How to determine that SQL Server is really lacking memory

We're running SQL Server Express for our project. I'm trying to prove that we have to move to Standard or Web version of it. Just because I suspect that because of Express edition limitation it can't ...
-6
votes
1answer
327 views

How to select only few columns from a table in database? [closed]

I have a table which consists of around 200 columns where name of each one is col_i (i=1 ,2,..200).Suppose I have to select only first 50 columns, how should I proceed? I found about concat() function ...
1
vote
2answers
180 views

cannot access my DB server on ubuntu

server OS: Ubuntu 14.04 MYSQL Server version: 5.5.43-0ubuntu The output of: select User, host from user is: db % db localhost In my /etc/mysql/my.cnf, I made sure that bind-address is ...

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