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

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408 views

How does security context propagate between schemas within a database?

We have a SQL Server 2008 database that contains two schema's. The owners of these schema's have been granted full SELECT permissions to all tables within each others ownership. I have created a ...
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3answers
1k views

Space used by databases file through linked server

I need to find out space used by database file for multiple databases through linked server(from one central server to multiple client SQL servers). I created view on client size, for all databases: ...
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1answer
40 views

Two dichotomy views of a table, and means to express this as a stored procudure?

There is a table events. Some relatively complex logic determines for each event whether it is archived. Then I need two more views: All archived events and all not archived events. How to express ...
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1answer
55 views

viewing Original Object under synonyms

I have certain synonyms in my schema which represent views from another schema. Now in oracle sqldeveloper, I am unable to see the actual SQL for those views but I see only an SQL like: CREATE OR ...
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1answer
414 views

Combining a tree structured Group model with its HABTM User model in one VIEW

I have a tree structured model Group which has the columns id, parent_id, name, lft and rght. I also have a model User which has the columns id, name and password. Group and User have a ...
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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 ...
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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 ...
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12 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 ...
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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 | ...
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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 ...
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2answers
110 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 ...
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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 ...
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1answer
55 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 ...
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0answers
89 views

Query on a SQL Server view with openquery to Hive returning wrong answer

I have a view in a SQL Server instance which is running an OPENQUERY to Hive through MS OLE DB Provider. The view is getting all the records from the Hive table without any WHERE clause. Now, I ...
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0answers
35 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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0answers
133 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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0answers
70 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 ...
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0answers
506 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: ...
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0answers
220 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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0answers
32 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
48 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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0answers
123 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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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
22 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
41 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
306 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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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?
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0answers
80 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
333 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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0answers
289 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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0answers
1k 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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48 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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0answers
80 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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0answers
243 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
242 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
101 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
3k 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
43 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
120 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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0answers
70 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
76 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
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 ...
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1answer
684 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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votes
1answer
959 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 ...
-1
votes
1answer
239 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
100 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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votes
1answer
192 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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votes
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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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): ...