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

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3
votes
1answer
419 views

Can indexing views in SQL Server 2005+ speed up SELECT count(*) from a View?

My initial question was How does someone determine if it is a good idea to index a view?. Update: My underlying assumption was that indexing views speeds them up. This is apparently not sensible, ...
3
votes
1answer
90 views

view corrupted when viewed using design feature

All, I had a very strange thing happen last Friday. We have a table that is updated on a daily basis using a job that fires a proc that utilizes a view. The columns were being transposed from the view ...
1
vote
0answers
16 views

How to improve performance when joining against coalesce

In an effort to remove a caching layer from our application, I'm building a number of views to encapsulate the different ways a user can have access to a piece of content - one per "rule" of access. ...
0
votes
1answer
27 views

ER Diagram - View Intergration/Centralised approach

Could anyone enlighten me on the difference between a view integration and centralised approach when designing a database, and how the ER diagram can be used to illustrate upon this; can't seem to ...
28
votes
5answers
13k views

Why not use a table instead of a materialized view?

I'm new to Oracle databases. If I have understood correctly, materialized view is a view which result set is saved as a physical table in the database and this view/table is refreshed bases on some ...
0
votes
3answers
2k views

Running an “ORDER BY CASE” query on MySQL view breaks it afterwards

Whenever I create a MySQL view and then run a query ordering the results with ORDER BY CASE WHEN (...), the view becomes unusable. The newly created view works properly and all SQL is correct. This ...
0
votes
1answer
330 views

Insert into a view derived from a table with a discriminator field

I am in a situation in which I have a base table with some fields and a discriminator field which could have one out of a specific set of values. From that base table, I have derived many views, one ...
1
vote
1answer
44 views

PostgreSQL JSON data type used as NOSQL, But VIEW as Relational Data Structure

Could I create a VIEW from the JSON data type but have it as a relational structure? Example: SELECT * FROM json_test; Results [ { "name": "Roy", "Country": "USA", ...
0
votes
1answer
61 views

SQL Server table and view show different values

I have a view that selects data from a table that is showing different data. The table is dbo.user, the view is dbo.users (don't judge, I inherited this system). The view is simply select * from ...
1
vote
1answer
17 views

Insertion Rule on a view

I m using postgres 9.3 and i m trying to insert data to the view objectifsBoutique and and PostgreSQL returns following error(« objectifsboutique » relation is not found). I have to mention that the ...
0
votes
0answers
10 views

creating best results from two tables

I have two tables, one is the results of an assessment from users(per row) and column starting with 819....X1 represents the qid. The other table holds the score for the answers (A1,A2,A3), both are ...
2
votes
1answer
25 views

Is using MySQL views a good translation mechanism?

We want to use a foreign vendor MySQL database, but the whole schema is barely understandable by our development team. We could alter the schema to rename tables and columns once for all, but the ...
2
votes
1answer
26 views

Select multiple rows based on date interval from two fields

I am still learning SQL and I would like to do something that I dont know if it is possible. I have a table in which each record has a initial date and a final date. I would like to create I query ...
1
vote
2answers
49 views

Slow Select over View

My simple SELECT statement on a view in Postgres 9.3.1 is pretty slow. The receipts table has 20 million entries and the other one has around 17k. But I still think it should be faster than ~16 ...
1
vote
1answer
38 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 ...
0
votes
0answers
11 views

Refresh materialized view in Teiid

I have created a teiid vdb with sql server data source. The view model contains a materialized view, how to refresh the materialized view manually or automatically? Is there any sql command to trigger ...
1
vote
1answer
21 views

Create Views Quickstart

I have setup a few buckets and now I’d like to create a view but I’m not sure where to start. I have logged in to the web console but the views I have created to not return any results. Also, is it ...
0
votes
1answer
24 views

Maintaining permissions on a replicated view after reinitialization

When we were on SQL Server 2005, there was some way that I was able to keep custom permissions on a view at the subscriber. Now that I'm on SQL Server 2012, there doesn't seem to be a way to do ...
0
votes
0answers
13 views

Creating a Views on an non-relational table, can't rotate

I have a table that is set up similar to this. id | key | value1 | value2 | value 3 01 | fname | "john" | null | null 01 | lname | "doe" | null | null 01 | bday | null | YYYY-MM | ...
0
votes
1answer
7k views

Database user specified as a definer

I have a view in my database. problem is below Error SQL query: SELECT * FROM `lumiin_crm_prod`.`v_contact` LIMIT 1 ; MySQL said: 1449 - The user specified as a definer ('lumicrm'@'%') ...
2
votes
1answer
67 views

With Clause vs View of the same name

In my database, there is a view named VAL_DATES_V which is used in many other views in the same schema. For example, the SQL code in the view SECTOR_V uses VAL_DATES_V. CREATE OR REPLACE VIEW ...
1
vote
1answer
550 views

Best way to create materialized view in mysql

I am using mysql 5.6, I am not being able to create materialized view here like oracle. I got one or two solution like flexview and all... Can anybody tell me best way to create materialized view in ...
2
votes
0answers
113 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 ...
3
votes
1answer
3k views

Using a linked server with OPENQUERY in a database project

I have a SQL Server 2008 running a database I want to throw in TFS. Therefore I used a Visual Studio 2013 database project where I imported the DB. After fixing a bunch of errors I'm stuck with only ...
5
votes
4answers
209 views

How to check if Alter view/stored proc script has run successfully

For the database deployments, I call all the db schema changes in a batch file and run them on the target database. Sometimes we have scripts for altering the views or stored procs. I'm wondering ...
0
votes
1answer
128 views

View collation are incomplete joins in couchdb

I was trying to create view collations following this tutorial: http://elegantcode.com/2012/02/14/view-collation-in-couchdb/ but I realize that the result was an array with 5 elements with 2 objects ...
0
votes
1answer
21 views

Reusing views to do aggregate queries [closed]

I have created some views which give me some values. So some thing like the following select from a table of all ids gives me some thing like id1 id2 id3 id4 view1 gives me id1 2 id1 1 id1 3 ...
1
vote
0answers
27 views

MYSQL — Inventory View with calculated fields

Trying To create an inventory view. I have created this query using MS Access query builder since I am no pro at SQL and this is pretty convoluted. When translating this into MYSQL syntax I get an ...
4
votes
1answer
2k views

need suggestions to improve view performance

I am looking to improve the performance of a view in SQL Server 2008. This view exists in a reporting database that is widely used by not-very-technical-folk to basically denormalize all of these ...
2
votes
1answer
1k views

Can a view affect ALTER TABLE commands?

I provide a database system to a number of customers. The database is installed locally on Oracle. We periodically upgrade the database structure (either adding new fields, renaming old fields, ...
0
votes
2answers
66 views

Efficiencies and pitfalls of a dynamically updated “Uber” View to streamline future code

We have a number of tables (about 40) with approximately 2500 columns between them that all have matching primary keys, but different unique columns. For various procedures and views, we'll draw on ...
1
vote
3answers
58 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 ...
0
votes
0answers
25 views

MySQL View: Transform rows in columns and update

i would like to show data from this mysql-table: ID | Channel_ID | Value | Time | 01 | 15 | 10,5 | 364 | 02 | 3 | 4,2 | 365 | 03 | 3 | 5,3 | 394 | in an ...
15
votes
4answers
6k views

Determining how a schema change occurred?

Something bad happened yesterday. A view that was created sometime back ago was modified by someone which eventually broke the reports. Unfortunately. somebody (knowingly or unknowingly) did this ...
2
votes
1answer
282 views

How to return a record from function, executed by INSERT/UPDATE rule (trigger)?

I'm having some issue when I'm trying to join two tables in a single view (for migrating code we want to split one big record into two records). I'm using Postgres 9.4! Here is an SQL fiddle. The ...
0
votes
2answers
108 views

How to find all schemas where a table has records?

In my Oracle database, I have a number of schemas (users/owners) with similar table structures (about 100 in total). However, some tables are empty in a lot of schemas. Is there a way to find out for ...
-1
votes
2answers
95 views

MYSQL: Join with many to many

I'm trying to create a view and trying to see what can be done, I have a main table a table I want to join to and also a junction table. Event table (it's very big so it's just dummy data): ...
3
votes
1answer
105 views

Error when using views on a linked server

I have this query: SELECT DescTipoentrevistador FROM Alfabase.dbo.tblTipoEntrevistador WHERE CodTipoEntrevistador IN ( SELECT CASE WHEN EXISTS ...
2
votes
1answer
122 views

MySQL : Avoid Temporary/Filesort Caused by GROUP BY Clause in Views

I'm planning on creating a view using this SQL SELECT, but the explain for it shows it's using temporary and using filesort. I can't figure out what indices I need in order to fix this problem. ...
2
votes
1answer
1k views

How to pass a parameter into a function

At the moment I have a view created, see it here in the answer. How can I create a function based on that crosstab() query , so I can pass a date, and get data for the specific date? Also is it good ...
1
vote
1answer
118 views

Postgresql Rename Table without Updating View Definitions

I've found out today that renaming tables in Postgresql also renames the VIEW definitions for Views that use the table I renamed automatically? Is there any way to turn this off? So I rename the ...
1
vote
1answer
36 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 ...
2
votes
1answer
188 views

Grant permissions on views, deny select on tables

I have a MySQL user and I want it to view ONLY the views I want and not any other table in the database. I've granted this user permissions only on certain views as following: GRANT SHOW VIEW ON ...
0
votes
1answer
26 views

How can I aggregate multiple results from another table using something like BOOL_AND?

I'm using PostgreSQL as my database. CREATE TABLE users ( id SERIAL NOT NULL, name TEXT NOT NULL, PRIMARY KEY (id), UNIQUE (name) ); CREATE TABLE groups ( id ...
0
votes
1answer
42 views

How can I create a bool column for a view based on the result of a statement?

I'm using PostgreSQL as my database. CREATE TABLE groups ( id SERIAL NOT NULL, name TEXT NOT NULL, PRIMARY KEY (id), UNIQUE (name) ); CREATE TABLE users ( id ...
0
votes
1answer
49 views

Selecting row multiple times, as specified by a field in that row

As part of an redesign, there's need for an different schema in one of the main tables in our database. The data in one of the existing tables will be kept as legacy data. To make the changeover ...
0
votes
1answer
54 views

create insertion rule on view returning id

I have a table private.products and a view public.products representing that table. And I want to create entries in private.products while inserting into view, it all works right, except that I also ...
0
votes
0answers
30 views

Slow queries while using views in MySQL

We have MyISAM tables on MySQL 5.5 and there is this select * from theView where serial_number = 'QWE12345' or select * from theView where user_id = 1234 kind of queries when searching. When I ...
1
vote
1answer
62 views

Insufficient privilege

We are using oracle 11g I am replicating production db for dev environment. I Have a user named CST2 and CST0 where CST0 contains all tables and view and public synonyms for the same. I have provided ...
1
vote
1answer
196 views

Slow max, min query in Postgresql View

I have a view and it's a left join between two tables (table_a has hundreds of millions of rows, table_b has ~2 millions). The query SELECT MIN("id") AS "min_id",MAX("id") AS "max_id" FROM "the_view" ...