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

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114 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 ...
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22 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
42 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 ...
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82 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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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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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, ...
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2answers
37 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 ...
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1answer
242 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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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?
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68 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 ...
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1answer
244 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 ...
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245 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 ...
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958 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 ...
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47 views

From keyword missing in view

I am this view which I am trying to compile. Given below is the view. CREATE OR REPLACE FORCE VIEW "My_View" ("my_ORDER", "REQUESTOR", "DEPARTMENT", "HOD", "SHIP_TO", "SOLD_TO", "PRODUCT", ...
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71 views

Return a string from a pivot query

I have a query that uses around 6 or 7 tables and uses pivot to return a formatted string from this entire structure. Actually, today this query is dynamically generated via C#/Entity Framework and it ...
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206 views

Mysql View Performance on Aggregate Functions

I've a table that contains weekly statistical infos. ex. Society - Week - Year - Data AAA Inc - 1 - 2014 - 10250 AAA Inc - 2 - 2014 - 5235 BBB Inc - 2 - 2014 - 3210 ... Over this table i need to ...
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2answers
169 views

Postgres 9.2 - Create View Different Column Names

I want to create a view of a table with a column renamed. I do not want to effect the source table, just the view. I need to rename the column addr:housename to addr_housename. We have a 3rd party ...
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2answers
100 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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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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1answer
41 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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114 views

Why does mysql show Primary key constraint on a View?

As far as I know views cannot have a primary key. However the result of SELECT FROM KEY_COLUMN_USAGE says differ. PRIMARY | S_MOBILE_ITEM_VIEW | ID | ...
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68 views

Procedure after commit

I have an application which periodically will insert large amounts of data, from that data I build a few materialized views (well emulate by creating a table from a view and replacing it with the ...
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1answer
74 views

Where can I read about views for MySQL?

I really don't know nothing about SQL.. I know how to insert and select data from database using PHP but besides that, nothing. I found this view And I am sure that 5 minutes for you to answer this ...
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2answers
66 views

View for a MANY_MANY_MANY relationship

Let's say I have 3 main tables: category, tag, url category and tag have a MANY_MANY relationship (category_tag). tag and url have a MANY_MANY relationship (url_tag). I would like for a given ...
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2answers
59 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 ...
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1answer
497 views

mysql view with user variables

I have a query that calculate distance from point a to point b using gps coordinates, and would like to make it view. Is it posible to pass variables that will replace xxx and yyy in my query with ...
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1answer
792 views

How to create view in SQLite using INSERT INTO? [closed]

I'm trying to create view that will summarize data in two tables. Each table have several columns, but they both have NAME and AREA columns. And I want these two columns to be united correspondingly ...
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1answer
231 views

Selecting just one table from Oracle view [closed]

I am creating a view to ease my manual selecting because I only want to fetch data from DB where it is meeting certain criteria which are present in several tables, so it is containing a lot of joins. ...
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1answer
84 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 ...
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1answer
182 views

Odd syntax error when creating view with SCHEMABINDING [closed]

I've been working with SQL Views for a while now, and I recently read that something that I want to do requires that one of my views be created with schemabinding. That sounds fine, but I get a ...
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1answer
4k views

sql server - could not allocate space for object

I am trying to retrieve the first 1000 records of my view and am getting this error message: Msg 1105, Level 17, State 2, Line 2 Could not allocate space for object 'dbo.SORT temporary run ...
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0answers
25 views

Postgres - Optimizing a View Query

I have a view which gets populated by approximately 150,000 records per day. The data from the view is consumed by another application. While reading the view, it takes almost 10 minutes, which is a ...
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2answers
92 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): ...
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1answer
214 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 ...
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1answer
54 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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1answer
2k views

Can I create a view against a table on another instance? [closed]

I need to query a table from another SQL Server on a different server but same domain, but I am not sure how I will be able to do it. I tried the solution in this answer but it doesn't work for me as ...