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

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118 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
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1answer
19 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 ...
2
votes
2answers
30 views

Joining two Mysql VIEWs takes a very long time

I have a textbox (for which I used jQuery auto-completion) in my PHP form where user can insert an actor/actress name and then by clicking "Search" button, a new window is opened showing list of ...
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2answers
27 views

Schema/Structure to handle secondary computed data

I'm trying to design a LAMP-based website for my pinball league, which plays competitive pinball every week in match play. One of the features of our league is that we convert raw scores to ...
1
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1answer
92 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 ...
0
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1answer
37 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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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 ...
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18 views

Recursive view for dynamic tree in MySql

Lets assume that there is a factory that produces products. the factory have catalog of a products, therefore tbl_catalog will be. ...
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2answers
3k views

How can I help SQL Server recognize my indexed view column is NOT NULL-able?

I have the following indexed view defined in SQL Server 2008 (you can download a working schema from gist for testing purposes): CREATE VIEW dbo.balances WITH SCHEMABINDING AS SELECT user_id ...
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2answers
74 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 wanna join to and also a junction table. Event table (it's very big so it's just dummy data): ...
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1answer
192 views

Restrict access to rows by usename

In my database i store data of different users (e.g. addresses or invoices) in the corresponding tables. I want to make sure that a logged in user only has access to it's own data in the tables (so ...
2
votes
1answer
42 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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52 views

Performance of VIEWs with UNIONs in different databases

For various corporate and historical and replicating reasons, I have multiple databases that contain similar-structured tables, holding the main production data used as a source for other home-made ...
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49 views

SQL Server: efficient query with (double) linked servers

I am DBA of server A (SQL Server 2008R2), linked to server B (SQL Server 2012SP1), linked to server C (not sure which version). I have no control on server C, and I cannot contact its DBA. On server ...
0
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1answer
172 views

FAST REFRESH ON COMMIT on Materialized view

I am trying to implement a materialized view which would Fast refresh on commit. I have created materialized view logs on base table as well but i am faced with the following error. ORA-12052: cannot ...
0
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1answer
81 views

How many LEFT JOINS make a VIEW unusable?

I have a view which involves LEFT JOINS on 20+ tables to a base table but when querying this view and looking at the execution plans I am getting something totally unexpected. For example, with the ...
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1answer
4k 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'@'%') ...
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28 views

MySQL: #126 - Incorrect key file for table '/tmp/#sql_9dc_1.MYI'; try to repair it

I've been reading possible solutions to this problem but until this time, those solutions don't work with my case. Activity: In phpMyAdmin, the following error pops up while opening a View. Error: ...
2
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2answers
1k views

Set permissions on a view

I'm creating a view on a SQL Server 2005 database via SQL Server Management Studio 2008, the view reads from two tables. The view is accessed from a web application and I want users to be able to ...
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2answers
59 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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44 views

Create separate temporary table/view and variables for every query

How can I create something similar to VIEW or TEMPORARY TABLE for every query separately? I have 1 process, it creates and holds one connection (doesn't destroy connection after request, so doesn't ...
2
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1answer
693 views

View with parameters in Sybase SQL Anywhere

A view with Sybase engine cannot take parameters. Is there a way to do this?
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13 views

MySQL Replication problem with VIEWS and “Sub-Databases”

I've got three servers that should do a master-master replication. On server 1 i got "01_maindb" which holds the master tables. I replicate this table to the two other servers without problems. ...
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1answer
39 views

Migrating database with views trough phpMyAdmin causes error in second host

I'm trying to migrate a database which contains some views and I'm doing trough phpMyAdmin export feature. MySQL version on servers are: Server to migrate: Server version: 5.5.34-0ubuntu0.12.04.1 ...
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0answers
30 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
38 views

Combining data of multiple rows in view

I have a table that holds timetracking data of users and looks somewhat like this: projectid activityid worklocationid year week day hours 1 22 21 2014 37 ...
2
votes
1answer
39 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 ...
4
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0answers
186 views

Replace a materialized view in Postgres

I have a materialized view in Postgres 9.3 that I'd like to update with new columns. Other materialized views also depend upon this view, but the error message indicates that dropping a view isn't ...
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2answers
98 views

Anyway to optimize complex view?

In the system, Files can belong to either products, clearances, business_lines or titles. Clearances are records that represent a combination of a title and a product. Products are collections of ...
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1answer
64 views

View vs TableValued Function vs SubQuery

I have a scenario where i need to join with 3 tables to get the value for one field for second field join with 4 tables for third field join with 3 tables all above joins are inner and if data ...
3
votes
2answers
6k views

SQL SERVER - Linked Server and query performance

I have a performance problem related to SQL Server/linked servers/views. I hope you can help me understand what is the best way to do what I want =). I have a database K with 3 linked servers ...
0
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1answer
71 views

How to grant select on a view … based on IP adress?

I wonder if it's possible to allow a client A to "see" some data in a view while allowing any other clients, namely B and C, to see ALL data from the same view. The distinction between A, B and C ...
3
votes
1answer
3k views

Problem with mysqldump and view

When using mysqldump to backup MySQL, I got following error. mysqldump --all-databases --routines >> all.sql mysqldump: Couldn't execute 'show table status like 'hdkien'': SELECT command denied ...
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49 views

What is the cost to create Materialized View log

Recently I ran DBMS_ADVISOR.TUNE_MVIEW and it gives me several lines to CREATE MATERIALIZED VIEW LOG ON "MYSCHEMA"."COMPANY" WITH ROWID CREATE MATERIALIZED VIEW LOG ON "MYSCHEMA"."BOARD" WITH ...
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1answer
121 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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0answers
17 views

Get tp.address_from and tp.address_to from travel_point table

I'm building a view for get tp.address_from and tp.address_to but I can't get this works. This is the query I'm working on: SELECT `tp`.`address_from` AS `address_from`, `tp`.`address_to` AS ...
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0answers
20 views

What is the optimal way to get a tabular view from an Entity-Attribute-Model table?

Following up on my previous question, I have created a table for storing measurements of different physical quantities. The schema looks like this: CREATE TABLE sensorreadings ( time TIMESTAMP, ...
2
votes
1answer
343 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 on that cross tab, so I can pass a date, and get data for the specific date? Also is it a good practice to ...
0
votes
1answer
20 views

Collate view with old record on couchdb

I need to create a collate view with couch db but I dont want to use the current records, I want to use records of a specific revision. For example, lets imagine that I have an invoice with an array ...
0
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2answers
32 views

primary_key problem in MySql view

I have 3 tables. and I want to create a view. There is no problem about generating SQL qeury and creating a view. but when I want to use this view in my web app it says me (LIKE THIS): "your view's ...
0
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1answer
48 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 ...
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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
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1answer
45 views

PostgreSQL : inconsistent result when using WHERE clause on VIEW

This is my VIEW declaration CREATE OR REPLACE VIEW inv_groups_vw AS SELECT gg.id, gg.sku, gg.name, gg.description, CASE WHEN count(i.*) = 0 THEN '[]'::json ...
0
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1answer
136 views

Best Practice For Data Views with Linked Server in SQL Server

In SQL Server, I have to design a View that I can map on a DBML file in order to dynamically retrieve information from the database with multiple conditions to filter. The problem is that I have to ...
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1answer
52 views

How to freeze a view in standard SQL? [closed]

I have the following: create view ONE as select ID workers_A; create view TWO as select ID workers_B; create view FINAL as (select * from ONE) UNION (select * from TWO); That works correctly, but ...
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0answers
18 views

View in View slower to execute?

Sometimes it's easier and clearer arranged to create a View from another View. Can this cause some speed losses in relation to selecting everything just in one Big and long View-Command?
4
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4answers
9k views

How to list all views in SQL in PostgreSQL?

How do I list all views for a database using an SQL command in PostgreSQL? I would like something similar to output of the psql \dv command, but preferably just a list of view names. e.g., SELECT ...
2
votes
1answer
371 views

Why is the ORDER BY clause in a view ignored as soon as it's called with a WHERE claue?

I have a view that joins several tables, just to simplify a frequently called query. This view has an ORDER BY clause on a calculated field (the order will never be different). (on SQL Server Express ...
1
vote
1answer
71 views

Why am I getting different results from a query vs. a view

The base problem I'm facing is that I need the latest record for each item. A little setup... MySQL 5.6.14. I need to create two views (because MySQL won't let me have a subquery in a view). My ...
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0answers
52 views

CREATE VIEW joining two tables, only displaying rows from the first table with the most recent date in the second table

I have multiple tables. My main table has a composite key consisting of a phone number and an order number. I want to create a VIEW where only the subscriptions with the most recent order date are ...