A virtual table that represents the data in one or more tables in an alternative way.

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45 views

Optimization suggestions for db2 materialized view

I have a view for db2 9.7 which has consolidated o/p from few tables. The view is built and it is working fine I want optimization suggestions on the view SQL CREATE VIEW XYZZ AS SELECT ...
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1answer
49 views

Best way to design a database with one person with different roles

We've been browsing for a while looking for an answer to this, but any of them suited exactly my needs, I hope is a relevant question. We have a database for managing books. In this database, a same ...
2
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1answer
48 views

Adding a column to the view which shows the date in format YYYYMM

In the following view, I want to add a column (not alter the view) named say "ABC" which shows the date in format YYYYMM (no date, only year and month). How can I do that? I am using db2. create view ...
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107 views

Identity in a view treated as ordinary int - migrating from SQL Server 2000 to 2012

I'm migrating a very old platform from a SQL Server 2000 backend and MS Access 2003 as its frontend to SQL Server 2012 backend and MS Access 2010 as the frontend. This obviously means a bit of ...
2
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1answer
53 views

Is there a way to make an OOo form for PostgreSQL updateable view?

I have a PostgreSQL database, with data from some 8 tables (not counting enums implemented as a table referenced by foreign key) summarized in a view. I made an INSTEAD OF trigger, so the view is in ...
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53 views

Setting up triggers based on exposed columns in a view's source table

I have a table where I want to do a AFTER UPDATE trigger if one of the columns modified was in a specific view CREATE VIEW [dbo].[iv_EmployeesView] AS SELECT EMPLOYEE_GUID AS EmployeeGuid, ...
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3answers
347 views

Selecting from a view shows the wrong set of columns

I'm selecting from a view in SQL Server. If I right-click on it and choose "Select Top n Rows", it runs and shows me 30 columns. If I open the view in ALTER mode (right-click, Script View As, ...
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3answers
870 views

do MYSQL views occupy physical space?

do MYSQL views occupy physical space? Or in other words, is a MYSQL database limited to a certain number of views?
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1answer
55 views

Does view take advantage of table indexes

I have a table with a clustered index and 2 non clustered index. Now, in my view I am selecting everything from my table create view dbo.MyView as Select * from MyTable Now, when I am using this ...
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1answer
185 views

Performance hit with column alias

I have a database in SQL Server 2008, with the final data table having about 2 million rows. The development team is implementing a new application and they have suggested changing the column name to ...
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1answer
27 views

SQL Server execution plan using a view, but no view is inside the stored procedure

I am troubleshooting this slow stored procedure and when checking the actual execution plan I noticed a warning of a possible missing index. Taking a closer look, it's against one of the views, not an ...
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1answer
36 views

can I give permission to insert into view, but not to referred table?

Here I have a view in public schema referring to the table in private schema: CREATE OR REPLACE VIEW public.products AS SELECT products.id, products.product_id, products.title, products.company_id ...
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2answers
95 views

Indexed views on double linked server

A server SERVER_A has some data. A server SERVER_B defines A as a linked server, and defines some views on the data. The queries are like this: CREATE view myview as select * from openquery ( ...
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1answer
328 views

Can I alter a view being referenced with schemabinding if the change fulfills the binding requirement?

In SQL Server 2008, I have views WITH SCHEMABINDING and I need to alter one. I am changing a column while not changing its alias so consumers will be unaffected. If I were to drop all my other views ...
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1answer
2k views

In creating view use SQL Security definer or invoker?

CREATE VIEW syntax is CREATE [OR REPLACE] [ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}] [DEFINER = { user | CURRENT_USER }] [SQL SECURITY { DEFINER | INVOKER }] VIEW view_name ...
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1answer
117 views

Does the SQL Server Backup Database Command also backup views from a Database?

I have a backup job (SQL Server Agent job) which will iterate through all of our SQL Server databases in SSMS, invoke the BACKUP DATABASE command to create a .bak file on a different server. This ...
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1answer
125 views

Where do caching servers conceptually fit in my architecture?

Given the simple well-known architecture below: Where (conceptually) does the caching server(s) sit?
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1answer
855 views

Triggers vs Views in MySQL

We are in the process of denormalizing a large amount of data for performance reasons. Basically a Query that would normally JOIN over 10 tables is replaced with a Query that has no JOINs, yet all the ...
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1answer
189 views

Add info to mysql view around an IP address - 10.10.1.100 to https://10.10.1.100

I have built a database in MySQL to replace the use of MANY excel spreadsheets that document our servers, network, IP addresses, etc. In that database I have created a view called DRAC (dell remote ...
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1answer
89 views

Index optimization on a view using a full outer join

Table structure: Foo FooChild Bar --- -------- --- ID ID ID Date FooID Date ...
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1answer
77 views

Full outer joins, coalescing, indexes and views

I have two tables, let's call them TableA and TableB. TableA TableB ------ ------ ID ID Date Date Foo Bar Both tables ...
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1answer
907 views

I have an INSTEAD OF trigger, but PostgreSQL still complains while I insert into view

I have created a view and an INSTEAD OF trigger for inserting/ updating/ deleting from that view. Now I have tried to insert some data to the view, and PostgreSQL returns following error (translation ...
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3answers
691 views

best practice for 'staging' relation in stored procedure: use temp table, or view?

When I write stored procedures that take relation A and output relation Z, I like to create 'staging' relations along the way, so I can inspect the state of the data after each step in the programming ...
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2answers
546 views

MySQL views and table locking (5.1 MyISAM)

I have a large (160 million rows, 50GB) table in MySQL 5.1 using MyISAM. If I were to construct a view defined by a fairly complicated query, would a SELECT on the view lock the underlying table?
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1answer
120 views

PostgreSQL - Create view with autoincremental column

I have a PostgreSQL table, and I need to create a view with a new column. This column needs to be an auto-incremental column starting at 1 and going to N. Is this possible to do without effecting the ...
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1answer
63 views

Is deriving a value using multiple joins a good idea? [closed]

I am working on a university project. I need to create a database from conceptual to implementation. That allows customers to create an order with multiple products the specification says that we ...
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1answer
2k views

Optimize command issuing “'View is not base table” and “Corrupt” error messages

I have no experience with MySQL. My boss ran an optimize against a MySQL database. Against a bunch of views we got the message "tablexyz" is not BASE TABLE and the next has message is ...
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1answer
1k views

while restoring mysql database, views changed into tables

I have a full database dump and i restored it. But in my new restored server all the views are appeared as MyISAM tables. In early times dumps were restored perfectly. can anyone help me to trigger ...
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1answer
166 views

How should row-specific metadata be created handled for an outer join view?

I have two tables, a large (millions) table of Tickets for orders, and a small (hundreds of thousands) table for Invoices metadata on a subset of those tickets. The metadata is information about when ...
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2answers
913 views

SQL Server 2000: Can't DROP VIEW?

I have SQL Server 2000. I want to clean it by dropping obsolete and unused objects. One of the views causes me an error. I try to give more information but I still have no clue what the cause is. ...
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2answers
94 views

Fixed database paths in stored procedures/views - is there a smoother way of doing this?

Our developers love to create lots of different stored procedures/views, which extracts data from lots of different databases on different servers. Every time we migrate to a new database server, ...
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1answer
1k views

View dropped, now shows as table “in use”, can't drop

I have a view on a MySQL/MyISAM setup, then the underlying table had a column dropped, and made that view invalid. I tried dropping the view so I could recreate it, then MySQL said it was a table ...
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1answer
99 views

Is it a best practice to contrast table and dependent view metadata to target which views to refresh?

We have non-indexed views created on vendor tables. When they change table structure or column definitions we run sp_refreshview as needed. What is the viability of a script to contrast the table ...
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2answers
2k views

SQL Server 2008R2 - How to prevent a role from creating or altering views within a database?

I have a situation on SQL Server 2008 R2 where I am trying to prevent users of an AD group from being able to create new views, or alter any existing views, within a particular database. This AD group ...
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2answers
8k views

Why an object became invalid in oracle databse.

There are some invalid views and functions in my database. I am not sure what changes caused these objects to became invalid since many people are working on the same database. How can I see which ...
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1answer
17k views

Oracle SQL create view privileges

This is more of a theoritical question but I need help ASAP. Here it is: With the appropriate use of SQL queries, grant as system administrators the required access privileges to a database user ...
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1answer
46 views

building a view w/ fields that only contain a certain word

Trying to build a simple SQL query... I have a table filled with "Yes" and "No" I want a view that only shows me records that contain "No" SELECT PhysicalBuild.Name AS Name, PhysicalBuild.Labels ...
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3answers
48 views

Add fields to view from select (transpose fields)

I've got a table with following structure: CREATE TABLE test ( id integer, field character varying, value character varying ); field value ------ ----- field1 value1 field2 ...
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1answer
32 views

Creating a View with results from join of scalar tables

I am really bad at SQL Queries and seem to be stuck at a very odd problem. Maybe there's an alternative of doing this, but I simply can't figure it out. Maybe you guys can help! So, here's my ...
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1answer
291 views

ORA-00942: table or view does not exist while creating synonym

We are using oracle 11g, the db structure goes like this: We have users CST and FAS. CST contains a table ST_CAT2, a public synonym ST_CAT has been created for the table CST.ST_CAT2 as a SYS user. ...
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1answer
608 views

PostgreSQL : drop column from view

I have a VIEW where I'm attempting to create an evolution script for, so I can add a column to it. That part works fine; column added just fine. However, the reverse does not work; remove that last ...
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2answers
32 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 ...
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1answer
154 views

Huge cross product view query speed

I have a huge view what consists of about 15+ million rows and about 150+ columns. That view is made of a lot of LEFT OUTER JOIN between a master table and various related tables. That master table ...
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1answer
480 views

Postgres - Optimizing an view dependent on an aggregate function?

I have a table of about 15 million records. Whenever information about a specific charge_id is changed, a new row is added with the current timestamp and the changes. This results in multiple rows ...
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2answers
1k views

Determining what algorithm MYSQL View is using

When creating a MySQL View, the algorithm is set to UNDEFINED. How do I see which algorithm MySQL is choosing for the query ? I tried using "EXPLAIN", but it is not obvious from the results what ...
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2answers
157 views

Configure Oracle user in Enterprise Manager to CREATE VIEW on any of his tables

Is it possible to configure an Oracle user in Enterprise Manager, so that he can later create views on any future, yet unknown table in his schema? I am currently running into "ORA-01031 insufficient ...
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1answer
535 views

Question about Oracle's interpretation of “host cpu utilization” in v$sysmetric view

I am studying the v$sysmetric view from Oracle and trying to understand what is Oracle's interpretation of "Host CPU Utilization" It says in the metric_unit as % busy/(idle + busy), but what is busy? ...
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1answer
223 views

What is the locking behavior for Updatable/Insertable Views?

Consider I have a View that is merely a simple join between 2 tables, selecting all columns. The View is Updatable and Insertable. What would be the locking behavior when executing an UPDATE or ...
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1answer
212 views

What is a good way to query data stored in multiple identical tables split by date/time

I have a 3rd party piece of software which records data samples from industrial equipment. This data logging software stores data in sample data tables with approximately one day's worth of samples ...
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1answer
2k views

PostgreSQL 9.1 - Query on VIEWS taking a lot of time

Using PostgreSQL 9.1, we are having problems while executing queries on a VIEW of PostgreSQL. Following is the situation: We have a partitioned Table "buz_scdr" over which we have built a VIEW ...