0
votes
1answer
17 views

Why do I need this attribute?

This is my relational schema; Book(title, shelfmark, ISBN, author, year) Genre(name) GenreBook(name, ISBN) User(firstName, lastName, cardID) UserBooks(cardID, ISBN, position) Why do I need the ...
0
votes
0answers
4 views

In Database administration is there any proven advantages in using/choosing a MySQL IDE over another? [on hold]

Would it really matter if I would choose a MySQL IDE between Workbench, HeidiSQL or SQLYog? Does there any difference between how these IDE's has been implemented?
0
votes
1answer
16 views

Prove or disprove that `T=R÷S` implies `S=R÷T`?

Prove or disprove: Given that T=R÷S, it is implied that S=R÷T. My attempt: Let us take some R,S tables and we will divide R÷S: step 1: R S ...
0
votes
0answers
4 views

Expanding MariaDB cluster (sharding)

I have an expanding MariaDB 3 node cluster and need to expand the available storage. Each node has (to make the maths slightly easier) 120Gb of database storage. As this is replicated, the total DB ...
1
vote
0answers
6 views

floating point exception in isql with mariadb

I have this problem in my Debian server : $ isql -v asterisk-connector [1] 13397 floating point exception isql -v asterisk-connector I already checked logs / google and got nothing ...
0
votes
0answers
13 views

transpose rows into colunms based on date grouping

I have a table with rows as such Number Date Number2 16 2016-02-03 34 9 2016-02-03 34 30 2016-02-03 34 7 2016-02-03 34 47 2016-02-03 34 1 2016-02-03 34 ...
1
vote
1answer
26 views

In a one-to-one relationship, where should the foreign key be placed?

I am currently designing an ERD for a project management system. I am unable to choose between two workable solutions as the best solution as I wish to embrace the best standards. The two entities ...
0
votes
0answers
3 views

how to change relay log fie name on “Adding Slaves to a Replication Environment”?

MySQL document advised that "new slave relay log file name " should followed the "old slave relay log file name" to avoid this problem, use the same value for --relay-log on the new slave that was ...
1
vote
1answer
20 views

Creating calculated column

I want to create a rating weight and I need do calculate AVG, then find COUNT and multiply both to get weight. I have something like that: SELECT post_id, COUNT(CASE WHEN vote > 0 THEN vote ELSE ...
1
vote
1answer
12 views

Show only duplicate values

How to select rows with duplicate values (non-distinct rows) and summarize with a count of the number of duplicate values in order of the most frequent duplicates? Given a table of: person_ name_ ...
1
vote
1answer
19 views

Fill Factor: Will the fill factor change automatically after it detects the changes in the index pages?

So lets say that the default fill factor is left at 0 initially. Data has been loaded up into the server and one fine weekend, the index rebuild job is run. Now if it detects any new data which must ...
1
vote
0answers
12 views

Blocking Extended events

I have very basic table CREATE TABLE [dbo].[Table_1]( [Test] [int] NULL) sp_configure'block process threshold', 1 --> 1 sec go To create blocking, in 1 session i executed Begin tran Update ...
1
vote
0answers
12 views

How to deal with Users Needing to Enter Mixed Data Types in MS SQL Server

I have a form in a C# application that I can't change with a data table bound to a query. The user enters a mark for a student's task or 'A' for absent. However, the person who designed this had the ...
0
votes
0answers
26 views

Retrieving the latest forecast

I am writing an application which stores weather forecasts for different cities, and each day there is a new forecast for each city. I want to be able to provide daily forecasts, and also the latest ...
0
votes
0answers
17 views

How to add a trigger on table create in Mysql

I want to apply a trigger on all tables if my database. I already created a script in PHP which will add triggers in all existing tables. But if any new tables are added in database, I have to run ...
2
votes
1answer
31 views

Error 909 restoring a database on Standard Edition

I ran into a problem with SQL Server 2012 Standard Edition (64-bit). I have rebuilt a system with the exact same specifications for software as it had been built previously (Windows 2012, SQL Server ...
0
votes
1answer
18 views

Could I set my InnoDB MySQL Server session state for SQL_SAFE_UPDATES and INNODB_FLUSH_LOG_AT_TRX_COMMIT?

Could I set my InnoDB MySQL Server session state for SQL_SAFE_UPDATES and INNODB_FLUSH_LOG_AT_TRX_COMMIT using MySQL Workbench's SQL Query window or MySQL Connection Navigator instead of in a c# ...
4
votes
2answers
37 views

Does this simple database design work even if it's cyclic?

I am a graduate student working on breast cancer in a veterinarian facility. I am designing a database to keep track of the health of my mouse colony. Each day, animal care staff verify each cage ...
0
votes
1answer
28 views

Select Into removes IDENTITY property from target table

I am doing an exercise which removes the IDENTITY property from the target table when using a select into statement. source table name: Sales.Orders column name: orderid column property: int ...
2
votes
1answer
22 views

Installation of SQL Server 2014 fails on Windows Server 2012 R2

I am attempting to run a silent installation of SQL Server 2014 with SP1 on Windows Server 2012 R2 core install, although it also fails when using UIMODE="EnableUIOnServerCore": (01) 2016-02-05 ...
5
votes
2answers
569 views

Maximum SQL Server memory set to 12 GB, but it still goes over 12 GB. How do I prevent SQL Server going over max memory limit?

User 'mrdenny' wrote that after you set SQL Server maximum memory... Now this isn't going to limit all aspects of SQL Server to that amount of memory. This only controls the buffer pool and the ...
0
votes
1answer
18 views

ora-13506 An attempt was made to perform operation with an invalid Start/End Snapshot Pair During AWR Creattion

When I'm create AWR Report then following error occurred plz help. Cause: An attempt was made to perform operation with an invalid Start/End Snapshot Pair.
1
vote
0answers
20 views

Find Bottleneck of Store procedure in Oracle 11g

I written a store procedure which retrieve data from 6 to 7 table using join and used sys-refcursor. Now problem is data fatch approximate 700 to 750 rows at 18 seconds but in some case take more ...
1
vote
0answers
16 views

pgAdmin is extremely slow on any remote operation

I run this query from my local pgAdmin connecting remotely to our dev server: select * from users order by random() limit 1; it hangs for 17 seconds and shows Total query runtime: 148 ms. 1 row ...
1
vote
1answer
40 views

Between optimizing a 1-billion rows table and dump-restoring it, which would be faster?

Have multiple tables which had more than 1 billion rows. Archived and deleted many of them, now want to recover the disk space. Have option to either optimize the table, or dump the table and restore ...
4
votes
1answer
12 views

Checking for fields not on SET clause on before update trigger on MySQL

I want to set a before update trigger that sets a column to a given value if an update query is done and that column has no new value on the set clause. The table I'm using. (Sort of) DROP TABLE IF ...
0
votes
0answers
23 views

MySQL Errror “Cannot Connect Invalid Settings”

I was working with mysql using phpmyadmin on a local server and when I clicked on a table it took a very long time to do anything so I let it do its thing, I walked away and when I came back I had the ...
0
votes
0answers
23 views

Join query not working [on hold]

select distinct concat(ed.first_name,'',ed.middile_name,'',ed.last_name) empname, emp_fkey, au.* from emp_details ed INNER join emp_ctc_upload au on (ed.emp_pkey = ...
0
votes
0answers
16 views

is there a GUI client that can execute multiple queries and show its multiple results?

I'm currently using pgadmin and it appears that it is not possible to send more than one query and retrieve multiple data sets back. For example, if I try to do this: select travelerId, name from ...
-1
votes
0answers
22 views

windows 10 home, 64 bit… trouble running a certain software requiring 2k8r2, would like to run these ideas by you [on hold]

I need to run a programming software that requires 2008r2, I cant finish installing the software because it wants to install its own instance of 2k8r2. Can I install sql first then run the software? ...
0
votes
0answers
8 views

mysqlworkbench nasty result grid with text columns

On MySQL Workbench 6.3, when you query a table with text columns that have carrier return \n in it, the Result Grid expands record's height accordingly. In the image, I've reduced the height of the ...
1
vote
0answers
15 views

Is it possible to resize a blob image?

I've got a table with an image blob field in it, which stores jpg files. As those jpg files are shown in a web page, I would like to resize them in order to spend less bandwidth when my web page call ...
1
vote
2answers
21 views

Interested in counting number of threshold crossings

I would like to determine the number of times that a value has crossed a threshold in either direction in a specified time frame. As an example, lets say that I am interested in the number of times ...
0
votes
0answers
11 views

Connecting to z/os db2 via trusted connection using data studio

I need to allow my developers to connect to the database using data studio. I want to use trusted context to handle security/access for this. I can't figure out how to make this work without ...
16
votes
1answer
111 views

Setting BUFFERCOUNT, BLOCKSIZE, and MAXTRANSFERSIZE for BACKUP command

I am looking for practical guidance for setting the values for the BUFFERCOUNT, BLOCKSIZE, and MAXTRANSFERSIZE of the BACKUP command. I have done a bit of research (see below), I have done a bit of ...
0
votes
2answers
25 views

Spanish characters saved incorrect in Mysql

I have googled this already, but I couldn't find what's wrong in my situation. I have a wordpress site that has a lot of non-english users which type in words such as "español" it is printed ...
2
votes
4answers
155 views

Add autoincrement to existing PK

I created a table in a DB that already exists in another DB. It was initially populated with the old DB data. The table's PK had to receive the values that already exist on those records, so it ...
1
vote
1answer
16 views

Postgresql uuid syntax error

I am trying to insert/update a foreign key field which is also a uuid to use the correct fk id for this set of data: zuri=# ALTER TABLE newarts ALTER COLUMN jurisdiction_id SET DEFAULT ...
0
votes
0answers
15 views

MS Access Run Multiple Queries

I have eight 'append' queries in MS Access 2010 that I want to be able to run. Each query also needs to take one parameter (a project number). I want to run all eight, entering the parameter only ...
1
vote
1answer
14 views

Postgres \copy from CSV: how to format range variables?

Consider a Postgres table containing a range variable: CREATE TABLE my_table (t_range tsrange, field1 text); If I want to manually insert a row via psql, I can run: INSERT INTO my_table (t_range, ...
4
votes
2answers
52 views

Transaction Log Backups Serial or Parallel?

We happen to be using SQL Server 2012 Standard Edition. I also happen to use Ola Hallengren's scripts to provide an easy, more flexible framework for doing backups and maintenance. This question ...
5
votes
1answer
39 views

Find the source of a recurrent mass SQL edit on a server

I'll try to explain my problem as clear as possible. The server of a company I support runs many websites. This server runs Windows Server 2012 with Microsoft SQL Server 2014. Almost all of the ...
1
vote
0answers
44 views

Is there a way to throttle MySQL requests to mitigate DoS traffic?

I've a server with ~200 wordpress websites hosted. When Google Favicon bot pays us a visit it searches all the sites indexed on our IP, that means it's requesting ~200 favicons. Most of the sites ...
1
vote
1answer
34 views

Mixed based replication between two databases on the same server

I have two apps with a current configuration as follows: App1 DB on server A/MySQL Instance A App2 DB on server B/MySQL Instance B Students can apply for internship using App1 and those ...
0
votes
0answers
15 views

Check for impersonated users using Policy Management

All: I apologize in advance for my poorly worded question, but I'm very new to using policy management and was wondering if there is a way that you can check for impersonated users using Policy-based ...
2
votes
1answer
29 views

SQL Server 2008 R2 services not coming online

I am working for a critical account and yesterday I got a weird issue after applying cumulative update package 14 on top of SQL Server 2008 R2 Standard edition. Before applying CU-14 package on the ...
1
vote
1answer
28 views

How to check value when i have a list of elements separated by comma in a column?

I am looking to return a value in a database. Table named TIPOLOGY is structured like this: Name Owner ID Office Type LIST_OF_VALUES Jones Lasi 1 12345 TKT AUD,PAX,CCF ...
0
votes
0answers
23 views

SQL Server Transactional Replication Not Being Created

I'm trying to set up transactional replication between two instances of SQL Server 2014. The publisher is a named instance running SQL Server 2014 Standard Edition. The subscriber is an instance of ...
0
votes
1answer
21 views

EXEC master.dbo.xp_cmdshell 'The user name or password is incorrect'

I am trying to move a file from a network drive to another server and when I execute this statement. I get an output of The user name or password is incorrect DECLARE @SourceFile AS ...
-8
votes
1answer
124 views

How can I intentionally grow my transaction log to 500GB for testing purposes? [on hold]

I have been tasked with creating a 500GB transaction log with the intention of developing an automated transaction-log shrinker. I need to be able to record the time take for this task. How can I ...

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