DO NOT USE this for questions targeting Microsoft SQL Server, use the tag sql-server instead. "SQL" is an acronym for "Structured Query Language", it is used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. ...

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5
votes
1answer
444 views

Execute output from query

I've got this query that builds my drop login statements. As part two I want to execute this output. Ideally I want to do this in a sql job with two steps (generate and execute). Can this be done? ...
0
votes
1answer
49 views

Bit column vs multiple join tables

I asked a question earlier about how I could define a many to many relationship between users and FOSes (fields of study). My original question was how could we know whether the user was the ...
-2
votes
3answers
169 views

Load Balancing in SQL

We are implementing new database applications with large users and the developer thinks we need to look into doing some kind of load balanced SQL database.our server is slow due to vast amount of ...
6
votes
2answers
2k views

Turning OFF CHECK_POLICY by default

We moved from SQL Server 2000 to SQL Server 2005. The client software, which I can not change, creates a user without option CHECK_POLICY = OFF; After creating a user, I have to run the command ...
1
vote
1answer
560 views

how to transfer data from table to table

I have two tables Table1, Table2. From Table1 want to transfer data to Table2. Suppose I have the following query: Select * from Table1 where UserID between 5 and 10 I want to store above ...
-2
votes
1answer
99 views

Handle vast amount of data in DB [closed]

Now my current database is working in SQL Server 2008 R2 and we are uploaded its only in 1 server. How can I migrate my existing database in to Hyper Table ? (My current database has huge amounts of ...
-1
votes
1answer
71 views

validate where each parent intermediary is also a parent to itself [duplicate]

I want to validate where each parent intermediary is also a parent to itself. So this query should return invalid parents in SELECT If table has any. I need to do is first of all get all parents ...
2
votes
1answer
102 views

How to select nodes where all children is satisfied?

I have a tree structure of light bulbs. I want to turn on all the light bulbs starting from the leafs of the tree. A light bulb cannot be turned on unless all its immediate children are turned on. ...
2
votes
1answer
209 views

Unique Non Clustered Column in Partitioned table

We have partitioned one of our SQL Server tables on a Clustered Index datetime column, we have a Primary key Non-clustered index column with Identity data type and this column is setup as a ...
4
votes
4answers
2k views

Examples of SQL transaction procedures for sales tracking or a financial database

I am making a database for an accounting/sales type system similar to a car sales database and would like to make some transactions for the following real world actions: salesman creates new product ...
4
votes
2answers
609 views

how to get unique records

Table structure CREATE TABLE [dbo].[Order Details2]( [OrderID] [int] NOT NULL, [ProductID] [int] NOT NULL, [UnitPrice] [money] NOT NULL DEFAULT (0), [Quantity] [smallint] NOT NULL ...
0
votes
1answer
456 views

How to load more than one MS-Access-db tables with data in SQL-Server-DB

I'm just getting into SQL-server 2008 R2 ssis, so forgive me if this is a basic question. I'm building an application using integration service. One of my computer folders contains more than one ...
7
votes
4answers
6k views

Select statement takes long remotely due to long “client processing time”, but short locally

While connected to our production server (SQL2008. very powerful machine), this select statement takes 2 seconds, spitting back all fields (4 MB of data in total). select top 30000 * from person ...
5
votes
3answers
173 views

Check server activity with code

I would like to see the activity on of the SQL server. So I can run a query when the server load is low. I know there is an activity monitor in SQL server but my company doesn't want me to give the ...
0
votes
2answers
143 views

How do you store tabular data in an RDBMS?

First: I really haven't got any idea how to google for this. If you got one, leave a comment. If I want to store arbitrarily large tables in a database, how should I set up my database tables? ...
1
vote
1answer
2k views

Mysql query grouping by two columns for max date takes too long

I have table that looks like this: l_p l_a l_timestamp l_n l_act l_name 123 321 2011-1-1T01:00:00Z B q das 21 23 2012-1-1T01:00:00Z C q sd 123 ...
1
vote
1answer
6k views

Connect Error (2054) - mysql_old_password issue still not solved

i use php 5.4.3 and i want to connect to a MySQL DB remotely (php script resides on a different server than the db) with normal oop way: $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME); ...
0
votes
1answer
267 views

Multiple junction tables?

I am working on a system where you have users, and you have Fields of Study or 'fos' for short. Each user can have many fos and each fos can have many users. So we are dealing with a many to many ...
1
vote
0answers
56 views

Which database could handle storage of billions/trillions of records in sql? [duplicate]

We are looking at developing a tool to capture and analyze netflow data, of which we gather tremendous amounts of. Each day we capture about ~1.4 billion flow records which would look like this in ...
9
votes
3answers
7k views

Are individual queries faster than joins?

Conceptual question: Are individual queries faster than joins, or: Should I try to squeeze every info I want on the client side into one SELECT statement or just use as many as seems convenient? ...
1
vote
2answers
478 views

Join on different types

In a database I have two tables: The first has a field named taxonomy_id that is an integer The latter has a field named ID that is a character varying The two tables are related: if it exists a ...
2
votes
2answers
127 views

Query to find Maximum friends not giving correct resuts [closed]

Table Schema for the Likes table: id id1 1 2 1 3 2 1 I count the total number of Likes for each student with this: select id,count(*) from friends group by id I have to find the students with ...
2
votes
2answers
2k views

Postgres 9.2 select multiple specific rows in one query

I have a table with three columns, Id Serial. Value real. timein Timestamp. I want to select the values based on a range of days ie. from two days ago until now. The table may contain one or two ...
1
vote
1answer
1k views

Remove specific duplicates (all but latest)

When removing duplicate rows, using the below query from this tutorial, how would I go about forcing which of the found duplicates to remove? DELETE FROM dbo.ATTENDANCE WHERE AUTOID NOT IN ...
0
votes
1answer
484 views

MySQL stored routine performance while using PREPARE

Instead of maintaining stored routines for each database in my current environment I have decided to create separate database just for stored routines storage. Mainly I am using them for reporting. ...
11
votes
3answers
2k views

Updating a table with millions of records, its been 4 days

I am currently updating a table with millions of records, its been 4 days and query is still executing. I checked the activity monitor its shows that query is running. In event log there is no ...
1
vote
2answers
753 views

Remove scientific notation from an XML column

I have a XML column as shown below: <Root> <Row> <Rowid>1</Rowid> <date>2013-05-06</date> <Balance>1.0002E7</Balance> </Row> ...
2
votes
4answers
161 views

When should I use the shrink option

I have seen a lot of blogs stating that shrinking is not a good habit as it will reduce the performance of the system. I agree with all those things it will lead to side effects like fragmentation, ...
1
vote
0answers
291 views

Search for multiple keywords related to separate columns on a single table

Imagine I have a table with the schema shown. Each of the columns represent a searchable collection that I would like to be picked up in the search. I am looking for a method that would derive the ...
0
votes
2answers
3k views

How to forcibly flush the undo log/tablespace of UNDOTBS1

I'm looking for a way to flush the undo logs so that the UNDOTBS1 doesn't give me an error saying that my tablespace isn't large enough. I tried using a commit, but without success, it still gives me ...
0
votes
0answers
20 views

Where condition execution sequence in MySQL [duplicate]

I am using MySQL 5.0.88. I have a query like select DISTINCT party.­id FROM party­ LEFT join party_­identifier AS pi ON pi.­party_­id = party.­id­ WHERE ­(pi.­source_­note=? AND first_­name LIKE ? OR ...
4
votes
1answer
262 views

How to get a row_number to have the behavior of dense_rank

I have a stored procedure will be used to page through data. One of the requirements of the procedure is to have a parameter that will be used to sort two columns of data, the sorting should be used ...
4
votes
4answers
4k views

Over use of Oracle With Clause?

I'm writing many reporting queries for my current employer utilizing Oracle's With clause to allow myself to create simple steps, each of which is a data oriented transformation, that build upon each ...
0
votes
1answer
30 views

Separate table by often changed / not often changed data?

I have a application which querys different gameservers, and stores for example if the server is online, and how many players are connected. But of course there is also data which is changed rarely. ...
2
votes
1answer
50 views

How can I include more query in one query?

These are my tables: tbl_answers => aid qid answer uid dateposted emailnotify namedisplay status isbestanswer tbl_questions => qid question ...
0
votes
1answer
69 views

Replicating Results of Queries on Oracle

I wan to setup a database such that its data come from queries run on a remote database. Basically the source database is very slow and we have no control over it. So, I want to create a second ...
5
votes
6answers
2k views

Backup very large table

I have to update certain values of a large table (for the sake of a presumed example, it is called 'Resource' and it is over 5M rows) and thus I have to make a backup before performing the changes. We ...
2
votes
2answers
292 views

MySQL many to many relation

Sorry is this seems a stupid question, but I have a table of server addresses and a second table with a list of hardware devices which use the addresses, it is possible for multiple devices to use the ...
1
vote
2answers
746 views

Oracle Linked Server query error

We have a problem with a query from a SQL Server 2008R2 - 64bit to an Oracle Linked Server. We use the Oracle 64-bit driver for Windows. When we query a certain table we get the following error: ...
0
votes
1answer
129 views

Looking for performance improvements for this query

This query is taking a long time to execute. We are expecting results in 0 sec, if possible. Please help me to do any other following: Rewrite the query Suggest any indexes Any other optimization ...
4
votes
1answer
5k views

Convert SQL Server 2012 SSIS package to 2008

I've created a few SSIS packages in SQL Server 2012 that I need to run on SQL Server 2008. I've been told that it is impossible in their current state. Is there a way to convert the 2012 packages to ...
8
votes
3answers
740 views

Worse performance on a new server

We've been on a dedicated server (single quad-core, 6 GB RAM) and are moving to a new dedicated server (2x hex-core, 32 GB RAM). Both are Windows Server 2008, SQL Server 2008. The performance on the ...
0
votes
1answer
316 views

String replace using concatenated strings from various columns

I'd like to remove a substring in a column via update statement. The substring to replace consists of multiple strings from other different columns but in strict order. The specification says: ...
0
votes
2answers
6k views

Use an Alias in Where Clause Subquery

I need to show some fields from another table in Oracle. Here is my query: SELECT ANGGARAN.SIMPEG_PEGAWAI.ID_PEGAWAI AS KODE, ANGGARAN.SIMPEG_PEGAWAI.NAMA, ANGGARAN.SIMPEG_PEGAWAI.NIP, ...
1
vote
2answers
6k views

Query WHERE clause and JOIN

I'm having an issue using a WHERE clause and JOIN. SELECT * FROM `CallDetailRecord` WHERE `StartTime` >=1357102799000 AND `StartTime` <=1357880399000 JOIN `CallEvent` ON `EventID` = ...
3
votes
1answer
3k views

Insert Row With Foreign Key Equal to ID - Circular Reference

In MySQL database I have an events table which has a circular reference to itself with the following columns. id (PK) | user_id (FK) | event_id (FK) | title Each new row inserted has a circular ...
2
votes
2answers
3k views

Using T-SQL to dynamically create Extended Properties

I would like to add Description and Status in the Extended Properties of a large database to all my tables and columns so that someone can fill in the values. It would be very laborious to add these ...
1
vote
1answer
4k views

How can we get table name from inside trigger?

I need to pass the table name from trigger to procedure. ALTER TRIGGER [dbo].[Trg_ProjectCreation] ON [dbo].[Projects] AFTER INSERT AS BEGIN SET NOCOUNT ON; -- procedure call ...
1
vote
6answers
872 views

Best practices with large amount of data

I'm building a solution and I have a question. All my data is currently stored in a unique table. Each row of data is associated with a type. My question is, what's the best practice for defining a ...
4
votes
2answers
520 views

Should I use a composite or single-column index?

I have the following columns in my database table (Medicines). ID bigint, MedicineName nvarchar(50), BrandName nvarchar(50), MedicineCode nvarchar(20), and price,quantity. I am making a stored ...