An acronym for "Structured Query Language" (it's not the name of a specific DBMS product), SQL can be used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. It can also be used to manage schemas and data ...

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3
votes
1answer
87 views

Sargable Queries

Very simple question I hope, I'm currently having some scripts I inherited into my project reviewed by the database admins. This has never been done before apparently and lots of issues are being ...
2
votes
1answer
99 views

Select data based on records created_at column

I have two tables Keywords, ProjectReports: http://sqlfiddle.com/#!15/06ae3/1 As you can see in that example everything works fine, but I want to get more data from those 2 tables and I don't know ...
1
vote
1answer
32 views

How to make MySQL join one-to-many with lowest value?

I have following database structure Domain has many URL which has many positions which belongs to phrase which belongs to user which belongs to subscription. In subscriptions table I have period ...
0
votes
1answer
26 views

Want to create partitions of a MySQL table and change the charset of new partitions

I have a database table which contains large amount of data. I have written a script to create new partitions every week and drop old partitions (which are of no use). Currently, I have a column in ...
0
votes
1answer
40 views

Is using a relational DB for storing votes and (accessed resources) overkill?

I am writing a forum component for a site and would like to keep track of what topics/questions a user accesses so that other topics/questions can be recommended based on said users previous choices. ...
0
votes
1answer
42 views

Print the execution time on messages Pane?

How I can print the execution time of each query on messages Pane? For example the Select * from tbl1 runs for 10 mins then Select * from tbl2 runs for 15mins and so on.. Select * from tbl1 Go Select ...
-1
votes
1answer
63 views

Divide single column value into multiple column depending upon the bit value of another column [closed]

I have a table containing following fields. Id varchar(5), TranDate date, TranType bit, TranAmount decimal(15,3) My table looks like this: Id TranDate TranType TranAmount ...
1
vote
1answer
31 views

How to update a single record in a table based of foriegn key ID in another table?

I am still very new to sql. I am having troubles updating one table. I am sending information from a web application into Microsoft SQL 2008 database. I have a table called EmployeePermissions that ...
2
votes
2answers
64 views

best possible index on this situation

create table #testing(id int, name varchar(50)) go Insert Into #testing Values(231, 'fasd') Insert Into #testing Values(232, 'dsffd') Insert Into #testing Values(233, 'xas') Insert Into #testing ...
0
votes
2answers
31 views

Insert data into a column where other columns have constraints

I want to insert data into the zipcode column of the employee3 table. SQL says write - INSERT INTO Employee3 (ZipCode) VALUES (28279);, however I keep getting this error message: Msg 515, Level 16, ...
0
votes
0answers
25 views

Starting up postgres on Ubuntu for the first time

I've installed postgres on ubuntu, created a node and now I'm trying to start up that node as per the instructions: postgres --coordinator -D /usr/local/pgsql/data -p 1281 But I get the following ...
-3
votes
1answer
75 views

Select Top N rows for Employees in a SQL Server table

I would like to select the TOP 2 activities carried out by all employees from an Employees table "Emp" which has a timestamp column. The regular "Select Top 2 * from Emp...." will only fetch the top ...
1
vote
1answer
51 views

set date value based on other row values

Sorry for the Header, I can't find the right way to describe what I want, possibly the reason why I can't get a solution by googling :) ... Here my problem: I've got a table with the following ...
0
votes
0answers
23 views

Multiple client tables or large overall table

I've recently taken over a project linking to a large MySQL DB that was originally designed many years ago and need some help. Currently the DB has 5 tables per client that store their users ...
0
votes
0answers
10 views

SQL-Count actions which are performed every 10 minutes

I have a table which shows the time when a user connects to the database.I want to count the number of Loggins which are performed every 10 minutes. for example here is some columns of my table user ...
0
votes
0answers
88 views

Error Code: 1133. Can't find any matching row in the user table

Im reading O'Relly "Learning MySQL" and it says that you can create a user in MySQL by doing just this: mysql> GRANT ALL ON *.* TO 'jill'@'%.invyhome.com' IDENTIFIED BY 'the_password'; Query OK, 0 ...
0
votes
0answers
37 views

Auto backup only for MySql database and selected folders in WHM or via cron job command

Hell all i have a VPS, WHM provide use auto backup feature. but i want only backup some selected database and folder. i try to use command via cron job but its not working. current code (not ...
0
votes
2answers
69 views

Adding an extra character to my column in select statement [on hold]

id varchar(10) 1 2 3 I need to display the contents as id 1A 2A 3A .. but it should not affect data in the table..
0
votes
0answers
30 views

Oracle right outer join SELECT statement with a table

I am trying to find out the tables that are in MONITORING.USAGE_TRACKING table in first place, along with the other tables that need to be analyzed. SELECT A.JOB_NAME, A.START_DATE from ...
0
votes
0answers
18 views

Hide message to who deleted the message

Please I am building a messaging system,below are my tables. table --users |u_id | Name | | 01 | Aku | | 02 | Sika | | 03 | Admin| table --messages ...
1
vote
1answer
123 views

Very slow simple PostgreSQL query on RDS

I seem to be getting very slow queries on a medium sized RDS box (db.m3.medium, 3.7gb ram). This is across a table of 4,152,928 rows.. select sum(some_field) c from pages where pages.some_id=123 and ...
0
votes
1answer
35 views

PostgreSQL: how do I query over a column with a custom range?

I'm trying to write a query over a string column called grades_served that can have values such as k-5 1-5 5-9 The query could be for a specific grade or it could be a range with a start and end ...
0
votes
1answer
38 views

What are alternatives to Replication to distibute data (Microsoft SQL Server)

Is anyone knowledgeable of alternatives to SQL Server replication? I have a scenario where separate databases will share a lot of the same data which complex queries will match against. We want to ...
3
votes
1answer
65 views

Query with dynamic ranges in PostgreSQL based on status

We have a table with invoices classified per day, with normal invoices and void invoices (invoices that are voided, in our country we use the Spanish term "anuladas"). For example suppose that we have ...
0
votes
1answer
20 views

MYSQL testing string field contains another altered string field

I have this table : mysql> desc mytab; +------------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | ...
0
votes
4answers
78 views

Use SQL or NoSQL? [closed]

I'm designing a system that checks a given website for any security vulnerabilities. The system includes a client (firefox plugin) and a server. The server does all the scanning while the client just ...
0
votes
1answer
33 views

Oracle: Replace corrupted first datafile

A datafile associated with a tablespace has been corrupted (got truncated to size 0). I don't mind losing the data, because I have a full DB dump which I can import. Now I want to replace this ...
2
votes
1answer
76 views

MS SQL - export tables to format compatible with PostgreSQL

We're using MS SQL Server 2005 at work and I want to export our data to PostgreSQL for testing. MS SQL Server has an export function but the only one that looks like it would work would be to export ...
10
votes
1answer
310 views

Resolving deadlock from 2 tables only related through indexed view

I have a situation where I'm getting deadlocks, and I think I've narrowed down the culprits, but I'm not quite sure what I can do to fix it. This is on a production environment running SQL Server ...
2
votes
1answer
68 views

TSQL- Column DataType Length

Can anyone please explain me the below one. I used the below query in getting the table columns info, but the max length seems to be x*2 of the actual col length. I mean if I have a col with datatype ...
0
votes
0answers
21 views

Select changes in table by date

I have following table schema name type id int key string count int date date url_id id with example data id key count date url_id 1 system 100 ...
0
votes
0answers
44 views

How to improve performance joining tables with no primary keys

Given two large tables of ~8,000,000 rows each. They are being joined on substrings of name address zipcode Naturally, the query is taking a long time. What are the best methods to improve it
0
votes
2answers
84 views

PostgreSQL : select columns inside json_agg

If I have a query like SELECT a.id, a.name, json_agg(b.*) as "item" FROM a JOIN b ON b.item_id = a.id GROUP BY a.id, a.name; How can I select the columns in b so I don't have b.item_id in the ...
3
votes
1answer
48 views

PostgreSQL seems to ignore RAISE EXCEPTION in a CTE

Using PostgreSQL 9.3 I have been trying to define an assert helper function to check for empty query results and similar things as follows: CREATE FUNCTION public.assert ( in_assertion boolean, ...
0
votes
0answers
20 views

Installing database

I have created database in my system using mysql.I tried to use in one of my friend's system.How can install the database in other system?
1
vote
2answers
31 views

SQL view, how to append results from tableB with the results from tableA

I am using SQL server 2012. I would like to generate a sql view where I got all records from tableA. And below these results I would like to have the results from tableB. There are no relations ...
0
votes
0answers
80 views

eCommerce product table design - MySQL

I am designing database for an web application, I have designed the product and specification details database as follows, create table pr_size ( size_id int not null auto_increment, ...
0
votes
1answer
37 views

SQL Server 2012 Express SP1 install still not 11.1

I run the SQL Server 2012 Express SP1 install and it succeeds. After I have rebooted my computer, I do a select @@version But still I only have version 11.0.21600.64. I have tried this on two ...
0
votes
0answers
17 views

Redesign tables, multiple foreign key and related table to same table

Hello I have this database: Table Teams is used in each one table. Match table contains teamA and teamB and round contains team that win the SET and team that start the set. But I dont know how I ...
0
votes
1answer
9 views

Get devices with not driver assigned

I have this related tables: And I need to get those devices with no driver assigned, in other words the device returned on this query shouldn't be on driver_has_device table since it'll not have ...
0
votes
4answers
252 views

Database/Storage engine suggestion for a project involving heavy inserts?

I am looking into a project which involves large number of inserts daily.I will have a list of user's (for example a user set of 500k ) , for which I need to monitor daily certain activities ...
0
votes
1answer
30 views

Can PostgreSQL results include the query?

I run the following command to run 2 queries in a sql file. Could be 1, could be 50 queries. Depends on the deployment. psql -U <username> -h <servername> -d <databasename> -f ...
1
vote
1answer
83 views

Postgres Update, limit 1

I have a postgres database which contains details on clusters of servers, such as server status (active, standby, etc). Active servers at any time may need to fail over to a standby, and I don't care ...
1
vote
4answers
123 views

Is it ok to change from full recovery to simple recovery in Sql Server

I have an old database - a users membership/role that was setup automatically by an ASP.Net 2 application years ago: The Sql Server version currently running is: Sql Server 10.5.1617 The users ...
0
votes
1answer
33 views

Finding Item's distribution over customer routes

Please help me to find a solution. I have two tables [CustomerMaster and SalesData] as shown below. CustomerMaster | CODE | NAME | ROUTE | DIVISION | |------|------------|-------|----------| ...
-1
votes
3answers
64 views

Retrieve recently inserted 5 rows [closed]

I want to fetch recently inserted 5 rows from my table. I want to know the sql query for the same. My table is: table xyz ( id integer generated always as identity (start with 1 increment by 1), ...
0
votes
1answer
42 views

Join reorders results [duplicate]

Is there any particular reason why adding an additional join to an ordered table would reorder the result set? Using a left join on the existing result set table-valued function is similar to below ...
1
vote
0answers
66 views

Database Archival Process [closed]

I am designing a database archiving process - which is a automated process. Do you have any advice for how to accomplish these goals? Below are my thoughts : create another clone database ...
0
votes
2answers
45 views

Oracle conditional statements

I am making a report, and I am trying to do following: If the value of the field is NULL, output empty string. Another words, I don't need the word "null" to be output to the user, just empty string. ...
1
vote
2answers
57 views

Finding the highest quarter of the year

I'm sitting here and do some practise but I just can't find the Solution. Maybe someone could give me some help? I have a table and should find the highest sale amount of a quarter per year. Data ...