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

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4
votes
0answers
140 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 ...
0
votes
2answers
92 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 ...
0
votes
1answer
166 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 ...
0
votes
2answers
55 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): ...
0
votes
3answers
1k 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 ...
-1
votes
1answer
39 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 ...
0
votes
1answer
38 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 ...
3
votes
2answers
4k 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
votes
1answer
68 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 ...
0
votes
1answer
2k 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
883 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 ...
0
votes
1answer
91 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
votes
0answers
35 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 ...
1
vote
1answer
94 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 ...
0
votes
0answers
16 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 ...
0
votes
0answers
16 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
214 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
16 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
votes
2answers
30 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
votes
1answer
13 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 ...
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
1answer
37 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
votes
1answer
33 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 ...
0
votes
1answer
54 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 ...
-2
votes
1answer
49 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 ...
0
votes
0answers
16 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
votes
4answers
7k 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
253 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
57 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 ...
0
votes
0answers
34 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 ...
1
vote
3answers
329 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 ...
1
vote
3answers
252 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, ...
0
votes
1answer
73 views

MySQL pivot table via a view

Suppose the following schema CREATE TABLE `log_apache` ( `date` datetime NOT NULL, `count` int(10) unsigned NOT NULL, `input` bigint(20) unsigned NOT NULL, `output` bigint(20) unsigned NOT ...
2
votes
1answer
41 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 ...
0
votes
1answer
22 views

whether to merge partitioned table with only partially overlapping columns

I opted for MonetDB for my static data, but this might be less of a MonetDB-specific question about features than about RDBMS (or just SQL) in general. I have data with a few "cross-sectional" ...
0
votes
1answer
31 views

About creating a View With additional coumns (that are not in the table)

I have this view with following definition. create view VIEW_IRS1 as Select MBR.PRSN_MBRSH_ID , Atr.Ssn_Tx , Names.First_Na , Names.Middle_Na , Names.Last_Na , Reff.Ref_Cd_Desc_Tx Suffix_Na ,'FALSE' ...
1
vote
0answers
64 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 ...
7
votes
3answers
13k views

Modify DEFINER on Many Views

I have am having problems backing up my databases after an update. I have been poking around on my system trying to figure out why. One query I ran returned this result. Got error: 1449: The user ...
0
votes
0answers
80 views

MySQL - Problems caused by SQL Security definer or invoker

I have a view used to be defined as: > **CREATE > ALGORITHM = UNDEFINED > DEFINER = `user1`@`localhost` > SQL SECURITY DEFINER VIEW `schema1`.`view1` AS > select ...
1
vote
1answer
236 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 ...
0
votes
2answers
36 views

Aggregating results of two database views in one database view

I have a view with name of UserInfo like this: And another view with name of UserRoleInfo like this: I want to aggregate all the records of the two views for one user name like H.F into ...
1
vote
0answers
66 views

Tools and techniques for untangling monster views (nested views)

First a bit of context (venting). I'm working with a new vendor product which is really nothing more than a SQL Server database with a .NET interface. First few weeks with this client and users are ...
7
votes
1answer
3k views

Oracle materialized view refresh schedule

Since I see that it is possible to specify an expression like sysdate + 1, here are my questions: Is it possible to specify the exact time of the refresh for materialized views in oracle? Is it ...
0
votes
1answer
76 views

MySQL query using left join on two inline views not returning rows without values in second view

For some reason when I execute the code below I'm only getting results back that have sku in both views. I thought this should give me everything in the first view and add the content from the second ...
0
votes
1answer
42 views

Why is it not possible to alter a view with a “CREATE OR REPLACE”?

The Postgresql documentation is clear on this point: you can not change the columns of an existing view. The new query must generate the same columns that were generated by the existing view query ...
1
vote
1answer
103 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 ...
2
votes
1answer
94 views

Make View Supersede Table in Same Database?

For testing purposes we have a sanitized copy of our production database in our test world. Because of the way it is sanitized, we now have empty fields where encrypted data previously existed. We ...
0
votes
0answers
316 views

How can I create a view in a stored procedure on MySQL?

I am trying to dynamically create views based on an SQL query and have a trigger recreate them when the fields in the view are to change. When I call the procedure I end up with a permission denied ...
3
votes
1answer
101 views

Do SQL Server Views update their data types automatically based on what tables feed them?

Someone mistakenly created a bunch of nchar fields in database tables. I noticed this, and after examining the issue, we're moving these fields to nvarchar types and trimming the values inside. In my ...
2
votes
0answers
34 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 ...