2
votes
0answers
2k views

Setting password for 9.3 PostgreSQL server

I currently have a 9.3 server running (on Ubuntu 14.04) with "trust" set as the authentification method in pg_hba.conf. How can I set the password again. In pgadmin the server currently doesn't allow ...
1
vote
3answers
2k views

I can't restore my database on SQL Server 2012. Exceeds size

I'm trying to restore a database from a .bak file. The file is only 89.3 mb large. I'm using the restore with replace option, so that all other data in the database is removed. We are just trying to ...
2
votes
2answers
132 views

My query fails to segment the results as intended. What am I doing wrong?

Update: Re-phrasing the question. Below are the results and the desired results. What do I need to do to get the desired results? See http://sqlfiddle.com/#!2/d0e13c/69 Thank you SELECT ...
0
votes
1answer
137 views

Implementing a simple ERD in MySQL: is the implementation below 100% compliant with the ERD?

ERD Consider the following ERD: Tables From it, I derived the following tables: Company ------------------ c_id c_name ------------------ CompanyEmail ------------------ c_id ...
1
vote
1answer
55 views

Order of output row in random order [duplicate]

When I do select query on single table then I get output rows ordered by primary key which is perfect, following query: select * from recondata where importid=131; but when I'm joining this table ...
2
votes
1answer
56 views

How can I enable logging for a single function in PostgreSQL?

I want to log the whole function runtime for a single particular function in PostgreSQL? Is this possible? The value of log_min_duration_statement = 3000 in postgresql.conf and I've tried to do: ...
2
votes
1answer
54 views

Difference of write authorization on file system with mySQL

On my local mySQL (on CentOS 6 VM) database I wanted to export some data from the DB to a file like this: SELECT html FROM mytable WHERE lang = 'en' and id='KEY01' INTO OUTFILE 'key01_en.html' By ...
0
votes
1answer
35 views

Does SQL/MED (ISO/IEC 9075-9) defines a writable foreign data wrapper interface

I just can't find anything about it. I don't have the paper or draft of the SQL:2011, and have almost only drafts from SQL:2008, 2006, 2003. Does anyone know if "SQL/MED (ISO/IEC 9075-9)" defines a ...
1
vote
2answers
119 views

Create read only user without being root

I want to create read only user in MySQL without any intervention of root user. CREATE USER ‘$user‘@’127.0.0.1′ IDENTIFIED BY ‘$password‘; Works for me only If I am a root user. But I want it to ...
1
vote
1answer
522 views

IBM DB2 9.7 and latest 10 version compatibility

At some point projects need to move from IBM DB/2 9.7 to some 10 version. Are there any significant compatibility issues that should be taken into account? We ofcourse use tables in schemas, but then ...
1
vote
0answers
1k views

Calculate the compound interest with variable annual rate

I'm moving this question from SO Some years ago I was asked to create something to calculate the current value of a lot of insurance policies, I came out with a query that worked fine, but I was ...
0
votes
0answers
85 views

Set max memory lower than minimal

I dont know the best way to fix that, but for lucky now I am using one Transactional Replication Repository server, please someone can save me? The main server is down beacuse I set the max memory to ...
0
votes
1answer
387 views

Failover Cluster - Add Witness Disk?

I'm trying to build SQL Server 2012 Cluster on top of Windows Cluster 2008R2. Can anyone please suggest.. do we need quorum disk in setting up SQL cluster 2012 on top of windows cluster 2008r2
1
vote
1answer
3k views

Authentification failure for PostgreSQL server (9.3)

I can currently not connect to my Postgresql server (9.3) from pgadmin (Running on Ubuntu 14.04). The server according to pg_lsclusters is on port 5433. Ver Cluster Port Status Owner Data ...
2
votes
1answer
5k views

Writing a query to find all employee salaries that are higher than their managers

I have two tables with some dummy data. I need to find all employees that make more than their managers. I was led to believe the point of the exercise is to learn how to do subqueries. I can isolate ...
2
votes
1answer
57 views

Reading from subscriber during Transactional Replication

When using Transaction Replication, are there any restrictions around selecting data from the subscriber whilst transactions are being applied to it? i.e. can selects be made against tables to which ...
1
vote
0answers
160 views

PostgreSQL 9.3 slaves don't recognize hstore as a type

I am using the postgres built in replication with two slave nodes and a single master. On the master node (as well as the slaves) the hstore extension is installed. But whenever a query using hstore ...
2
votes
3answers
2k views

How to do a one-time log shrink on a database with transactional replication

I have inherited a 10 GB database with an 80 GB log [only 3% in use according to DBCC SQLPERF(logspace)]. It seems safe to assume the extreme log growth was due to problems from long before I was ...
0
votes
4answers
136 views

Move MySQL database to another server

I need to move 20 Gb MySQL database from on Debian server to another. The problem is that there is no way to create its backup since there are almost no free HDD space on the source server. What would ...
1
vote
1answer
205 views

Why does IN (subquery) perform bad when = (subquery) is blazing fast?

Have a look at these two queries: Simple: mysql> SELECT * FROM omgbatch JOIN omgoutput ON (idomgbatch=omgbatch) WHERE idomgoutput = (SELECT DISTINCT lastoutput FROM omgenvelope WHERE ...
4
votes
1answer
3k views

How to remove known elements from a JSON[] array in PostgreSQL?

I'm facing an issue regarding using the JSON data type in PostgreSQL. I try to achieve storing a Java model denormalized in the DB. The model features lists of complex objects. Thus, I decided to ...
2
votes
3answers
2k views

postgreSQL 9.3 streaming replication delay

I'm running a fairly simple WAL streaming replication setup between two postgreSQL 9.3 servers that are on a private 1Gb LAN, but recently I've noticed that there is an increasing amount of ...
1
vote
1answer
62 views

restore database using bak file - resorting to old date?

Last night I made a full backup of my DB in SQL server management, when I restore the DB instead of being complete - it is missing all its data from the last few month. The full backup was taken ...
-1
votes
4answers
7k views

Host is not allowed to connect to MySQL

I have already uploaded some files in the free web host I chose and created a database there using phpMyAdmin v2.11.4 Also, I have Googled first this question before posting this here but I don't ...
0
votes
1answer
96 views

Apply DB2 logs from production to DR

Is it possible to Apply DB2 9.5 logs files from Production site to DR site? Or do I have to do Backup/Restore and rollforward ...? I copied log files from production site to DR and issued the ...
-1
votes
1answer
353 views

Lost connection to mysql?

We're receiving the following error on every 1 hour. Lost connection to MySQL server at 'reading initial communication packet', system error: 115 "Operation now in progress" Any clue ?
1
vote
0answers
35 views

Host is not allowed to connect to MySQL [duplicate]

First of all I'm acknowledging you that I am a completely newbie in this field. The field I'm referring to is the summation of these things: Accessing files on different computers or over the ...
0
votes
1answer
9k views

Trigger to update a date field on one table when another table is updated

I want to be able to update a date filed in one table when another table is updated. I have the following two tables: Transdetails, Customers. In the Customers table I have a field called ...
12
votes
3answers
842 views

Get streak count and streak type from win-loss-tie data

I made a SQL Fiddle for this question if that makes things easier for anyone. I have a fantasy sports database of sorts and what I'm trying to figure out is how to come up with "current streak" data ...
1
vote
3answers
1k views

MySQL: How to avoid case sensitivity in SQL queries when migrate from Windows to Linux?

I have migrated my Database from Windows to Linux server. In many places, query has been written without focusing their cases (uppercase / lowercase). So, these queries are not getting executed and ...
0
votes
1answer
8k views

How to calculate time difference in sql

I have one table named test. In that table I have a column named test_time of type DATE. I want to calculate the time difference between test_time and sysdate in minutes. select 1440 * ...
2
votes
2answers
327 views

Count where previous record exists in either of two tables

I'm trying to COUNT records on one table where both the counted records and their "previous" records exist either in the same table or on another. The table that I'm sampling has a composite PRIMARY ...
2
votes
1answer
532 views

MySQL Seconds behind Master fluctuation

I have two servers set up in Master-Master with one additional Slave connected to the first master. Lately I've started getting alerts from monyog that Master 1 has a seconds_behind_master value of ...
2
votes
0answers
132 views

Postgres: missing disk space after truncate and re-insert

We've got a IP address range dataset stored in a table that was truncated and then re-populated with a slightly modified version of the dataset (almost identical in size). However, after truncating ...
6
votes
1answer
780 views

high background flush avg mongodb

similar question: High Global Lock % on Mongodb Overview We have a production setup replica set in v2.4.8 mongodb running on five 4-core, 28gb RAM VMs with standard azure datadisk HDDs running on ...
0
votes
1answer
300 views

SQL Select query to include each row a number of times

This is probably easy to do (I hope), but my experiments with OUTER JOIN and CROSS JOIN etc do not give the results I am after, so here's the question: I need to do do a projection on fields in a ...
3
votes
1answer
329 views

Multi-Site clustering on Windows 2012 for SQL Server 2012

I am hoping someone can point me in the right direction here. We are trying to do a proof of concept for a 3 node multi-site cluster on Windows Server 2012 R2 for our SQL Server environment. There ...
1
vote
1answer
724 views

Upgrading using pg_upgrade on windows fails

When upgrading from postgres 9.2 to 9.3 by following the upgrade procedure found in PostgreSQL 9.3.4 documentation about pg_upgrade, the following command fails: RUNAS /USER:postgres "CMD.EXE" ...
1
vote
4answers
372 views

Mass data upload from Excel - technology

I am a Developer seeking help in terms of DB technology for a specific requirement. I have done some research but can not conclude with list. Requirement: There will be a web application which will ...
2
votes
3answers
700 views

Moved Model Database and now my SQL Server doesn't work

I moved my Model data and log files: ALTER DATABASE Model MODIFY FILE (NAME = 'modeldev', FILENAME = 'D:\Data\model.mdf') ALTER DATABASE Model MODIFY FILE (NAME = 'modellog', FILENAME = ...
8
votes
2answers
2k views

Alternative to EAV for dynamic fields in a star schema data warehouse

I need to support dynamic fields and values in a big datawarehouse for storing API requests log, my user case is that I need to store all API requests query string and able to perform query against ...
1
vote
1answer
130 views

Rerunning query in the same connection takes significantly longer

I am having a weird issue when a running a query that joins some semi-large tables (one table is about 2 million rows and the other about 21 million) together. What happens is the query does not run ...
1
vote
1answer
314 views

Consolidated realtime mysql backup with master/slave setup or binlog

I have 20+ mysql servers and their have low write requirements. So, I want to see if any way I can replicate the data/binlog from these servers to a single slave so realtime backup purpose. If I ...
1
vote
1answer
456 views

Why does innodb_flush_method = O_DSYNC provide such a performance boost with SAN-backed storage?

I've seen some people suggest that O_DSYNC should be used with a SAN. The MySQL docs have this to say about O_DSYNC in general: In some versions of GNU/Linux and Unix, flushing files to disk with ...
0
votes
1answer
1k views

Export, based on query, into INSERT text file

I need to export some data into a file. The data are selected with a query that will often be made of multiple joins. I want the import operation to be as easy as possible. I was thinking of building ...
1
vote
1answer
40 views

Can an index refer to only one or a subset of possible values?

I am using Postgres. The table looks something like this: tran_id SERIAL PRIMARY KEY, account_id integer NOT NULL CONSTRAINT fk_account_id REFERENCES base.account(account_id) ON DELETE CASCADE, ...
0
votes
1answer
127 views

Replace String within Serialized data

I am moving my forum from one domain to another and need to replace all instances of the previous domain with the new one. In looking at the mysql data, many of the matches are going to be in the ...
3
votes
1answer
294 views

How to Substitute Variables in PostgreSQL

The given Oracle query inserts data into table by substituting variables. How I achieve the same in PostgreSQL? INSERT INTO control_threshold ( threshold_id, group_name, description, sql, ...
0
votes
2answers
2k views

Difficulty with Postgis extension on Ubuntu 14.04

I have a updated Ubuntu 14.04 running postgresql 9.3 (installed using the tutorial from https://wiki.postgresql.org/wiki/Apt). When I access my database through pgadmin and go to the console and ...
0
votes
0answers
79 views

Sorting the view on which the stored procedure runs

I want to sort the view on a particular column before my stored procedure runs. Is there a way to do this through the stored procedure? Can anyone show me a MySQL example? This is what the stored ...

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