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  • MySQL privileges - DROP tables, not databases

    - by Michal M
    Hi, Can someone help me with privileges here. I need to create a user that can DROP tables within databases but cannot DROP the databases? From what I understand from MySQL docs you cannot simply do this: The DROP privilege enables you to drop (remove) existing databases, tables, and views. Beginning with MySQL 5.1.10, the DROP privilege is also required in order to use the statement ALTER TABLE ... DROP PARTITION on a partitioned table. Beginning with MySQL 5.1.16, the DROP privilege is required for TRUNCATE TABLE (before that, TRUNCATE TABLE requires the DELETE privilege). Any ideas?

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  • MS SQL share identitiy seed amongst tables

    - by Net Citizen
    In MS SQL is it possible to share an identity seed across tables? For example I may have 2 tables: Table: PeopleA id name Table: PeopleB id name I'd like for PeopleA.id and PeopleB.id to always have unique values between themselves. I.e. I want them to share the same Identity seed. Note: I do not want to hear about table partitioning please, only about if it's possible to share a seed across tables.

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  • Fulltext search on many tables

    - by Rob
    I have three tables, all of which have a column with a fulltext index. The user will enter search terms into a single text box, and then all three tables will be searched. This is better explained with an example: documents doc_id name FULLTEXT table2 id doc_id a_field FULLTEXT table3 id doc_id another_field FULLTEXT (I realise this looks stupid but that's because I've removed all the other fields and tables to simplify it). So basically I want to do a fulltext search on name, a_field and another_field, and then show the results as a list of documents, preferably with what caused that document to be found, e.g. if another_field matched, I would display what another_field is. I began working on a system whereby three fulltext search queries are performed and the results inserted into a table with a structure like: search_results table_name row_id score (This could later be made to cache results for a few days with e.g. a hash of the search terms). This idea has two problems. The first is that the same document can be in the search results up to three times with different scores. Instead of that, if the search term is matched in two tables, it should have one result, but a higher score. The second is that parsing the results is difficult. I want to display a list of documents, but I don't immediately know the doc_id without a join of some kind; however the table to join to is dependant on the table_name column, and I'm not sure how to accomplish that. Wanting to search multiple related tables like this must be a common thing, so I guess what I'm asking is am I approaching this in the right way? Can someone tell me the best way of doing it please.

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  • dataset not getting all the resultant tables i.e multiple tables are not being displayed in dataset

    - by Shantanu Gupta
    How to fill multiple tables in a dataset. I m using a query that returns me four tables. At the frontend I am trying to fill all the four resultant table into dataset. Here is my Query. Query is not complete. But it is just a refrence for my Ques Select * from tblxyz compute sum(col1) suppose this query returns more than one table, I want to fill all the tables into my dataset I am filling result like this con.open(); adp.fill(dset); con.close(); Now when i checks this dataset. It shows me that it has four tables but only first table data is being displayed into it. rest 3 dont even have schema also. What i need to do to get desired output

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  • Polymorphism in SQL database tables?

    - by Patrick Daryll Glandien
    I currently have multiple tables in my database which consist of the same 'basic fields' like: name character varying(100), description text, url character varying(255) But I have multiple specializations of that basic table, which is for example that tv_series has the fields season, episode, airing, while the movies table has release_date, budget etc. Now at first this is not a problem, but I want to create a second table, called linkgroups with a Foreign Key to these specialized tables. That means I would somehow have to normalize it within itself. One way of solving this I have heard of is to normalize it with a key-value-pair-table, but I do not like that idea since it is kind of a 'database-within-a-database' scheme, I do not have a way to require certain keys/fields nor require a special type, and it would be a huge pain to fetch and order the data later. So I am looking for a way now to 'share' a Primary Key between multiple tables or even better: a way to normalize it by having a general table and multiple specialized tables.

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  • Group SQL tables in SQL Server Management Studio object explorer

    - by MainMa
    I have a table which has approximately sixty tables, and other tables are added constantly. Each table is a part of a schema. A such quantity of tables makes it difficult to use Microsoft SQL Server Management Studio 2008. For example, I must scroll up in object explorer to access database related functions, or scroll down each time I need to access Views or Security features. Is it possible to group several tables to be able to expand or collapse them in Object Explorer? Maybe a folder may be displayed for each schema, letting collapse the folders I don't need to use?

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  • How to reliably retrieve tables and columns information stored in Torque Criteria object

    - by David Zhao
    Hi there, Is there a way to retrieve tables, including alias tables, and columns, including alias columns, from an Apache Torque Criteria object reliably? I understand that there is methods like: getSelectedColumns, getAsColumns(), getJoins(), etc., but for examples, getJoins() will just return a list of joined tables strings in free text, where one has to use regular expression to extract the needed joined table information out of it. Thanks in advance! David

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  • MySQL configuration that allows for locking many tables?

    - by Floyd Bonne
    I need to do a MySQLDump on a DB with ~700 tables and when I try with my current configuration, I get an error: mysqldump: Got error: 1016: Can't open file: './my_db/content_node_field_instance.frm' (errno: 24) when using LOCK TABLES Searching around I've found that this happens because it tries to lock all tables and fails because they are "too many". I know I can try lock-tables=no and get a dump, but this way my DB might be in an inconsistent state. So, does anyone know what is the MySQL configuration setting I need to change in order to be able to do the locking I need? I'm running 5.1.37-1ubuntu5.1 with MyISAM. Thanks!

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  • OutOfMemory during paging

    - by Tony
    Hi I am using ObjectDataSource, ListView, CustomPaging If the total number of rows is too big, I got OutOfMemory exception, it seems that it caused by some array, I don't get it, because total number of rows should never make any array to be filled with elements, the page size do!! This is the logger. ****EXCEPTION # 3 : 4/30/2010 9:43:07 PM System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. --- System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown. at System.Web.UI.WebControls.ListView.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at System.Web.UI.WebControls.ListView.get_Controls() at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) at System.Web.UI.Control.LoadViewStateRecursive(Object savedState) at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) at System.Web.UI.Control.LoadViewStateRecursive(Object savedState) at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) at System.Web.UI.Control.LoadViewStateRecursive(Object savedState) at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) at System.Web.UI.Control.LoadViewStateRecursive(Object savedState) at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) at System.Web.UI.Control.LoadViewStateRecursive(Object savedState) at System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) at System.Web.UI.Control.LoadViewStateRecursive(Object savedState) at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace --- at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.default_aspx.ProcessRequest(HttpContext context) in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\flickrdemo\15752207\c63ea96c\App_Web__8yxn9sb.0.cs:line 0 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

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  • Tables with no Primary Key

    - by Matt Hamilton
    I have several tables whose only unique data is a uniqueidentifier (a Guid) column. Because guids are non-sequential (and they're client-side generated so I can't use newsequentialid()), I have made a non-primary, non-clustered index on this ID field rather than giving the tables a clustered primary key. I'm wondering what the performance implications are for this approach. I've seen some people suggest that tables should have an auto-incrementing ("identity") int as a clustered primary key even if it doesn't have any meaning, as it means that the database engine itself can use that value to quickly look up a row instead of having to use a bookmark. My database is merge-replicated across a bunch of servers, so I've shied away from identity int columns as they're a bit hairy to get right in replication. What are your thoughts? Should tables have primary keys? Or is it ok to not have any clustered indexes if there are no sensible columns to index that way?

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  • Membership Provider users in different tables

    - by Mike
    I have an existing database with users and administrators in different tables. I am rewriting an existing website in ASP.net and need to decide - should I merge the two tables into one users table and just have one provider, OR leave the tables separated and have two different providers. Administrators, they need the ability to create, edit and delete users. I am thinking that the membership/profile provider way of editing users (i.e. System.Web.Profile.ProfileBase pro = System.Web.Profile.ProfileBase.Create("User1"); pro.Initialize("User1", true); txtEmail.Text = pro["SecondaryEmail"].ToString(); is the best way to edit users because the provider handles it? You cannot use this if you have two separate providers? (because they are both looking at different tables). Or should I make a whole lot of methods to edit the users for the administrators? UPDATE: Making a custom membership provider look at both tables is fine, but then what about the profile provider? The profile provider GetPropertyValues and SetPropertyValues would be going on the same set of properties for users and admins. Mike

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  • Problem reading from 3 tables in mysql

    - by user225269
    What do I do, I need to fetch data from 3 tables in mysql, here is my current query. All of the tables contain the IDNO which has 03A45 number. But this query isnt returning any results: SELECT * FROM father, mother, parents WHERE father.IDNO=mother.IDNO=parents.IDNO AND mother.IDNO='03A45' AND father.IDNO='03A45' AND parents.IDNO='03A45' What would be the correct query for this? All of the tables have the IDNO as primary key.

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  • Sorting DB tables from least dependent to most dependent

    - by Sergey Mikhanov
    Hi community, I'm performing a data migration and the database I'm using only allows to export and import each table separately. In such a setup importing becomes a problem since the order in which tables are imported is important (you have to import referenced tables before referencing ones). Is there any external tool that allows me to list the database tables sorted from least dependent to most dependent? Thanks in advance.

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  • Issue with percona-xtrabackup-2.0.0 hotbackup on MyIsam tables

    - by arn
    I am trying to implement hot backup for MyIsam tables with "percona-xtrabackup-2.0.0" and getting the following error? As the all tables are MyIsam I doubt am I using the correct package ? Backup : ./innobackupex --user="root" --password=<pass> --defaults-file="<path>/my.cnf" --ibbackup="<path>/percona-xtrabackup-2.0.0/bin/xtrabackup" <path>/backup/ innobackupex: fatal error: no 'mysqld' group in MySQL options innobackupex: fatal error: OR no 'datadir' option in group 'mysqld' in MySQL options apply-log : ./innobackupex-1.5.1 --apply-log --defaults-file=<path>/backup/2012-06-02_09-59-30/backup-my.cnf --ibbackup=<path>/percona-xtrabackup-2.0.0/bin/xtrabackup <path>/backup/2012-06-02_09-59-30/

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  • MySQL Create tables without commiting current transaction

    - by user276648
    I'd like my program to be able to install plugins, and rollback all the changes made if an error occurs. So I create a transaction that keeps all the things that were added while installing the plugin. The problem is that the plugin may want to create tables, and doing so automatically commits the current transaction in MySQL. See Statements That Cause an Implicit Commit on MySQL web site. Any idea on how I could do it? I thought of using temporary tables as they are not automatically commited, unless they are using too much memory, but it looks like temporary tables cannot be rolled back anyway (and I haven't found a way to convert them to permanent tables). I just found out about "save points" (http://dev.mysql.com/doc/refman/5.1/en/savepoint.html), but I don't really understand how/when it should be used nor if it can help me achieve what I want.

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  • Replicating/Synchronizng multiple tables across diffrent Databases on the same instance

    - by Idan
    I have few tables that needed to be replicated/synchronized across several databases in our SQL Server 2008 cluster. I know it's possible to replicate between multiple instances, but I'm looking for replication or synchronization in the same instance between specific tables of databases. The replicaiton/synchronization should happen every half-hour or so, but I don't mind it happening constantly. I can't use DROP the target table and INSERT (copy) the source table since there are many constraints. Reason for this is to not manage in the application layer and write to 2 different databases at the same time. Example: DB1 has T1, T2 and T3 - these are constantly being updated by the application, APP1 running on DB1. DB2 needs to have an updated copy of T1 at all times, also, there is a different application, APP2 runs only on DB2. Both DB1 and DB2 are located on the same instance, INST1. Would it be possible to replicate T1, T2 and T3 from DB1 to DB2 ? Thanks, Idan.

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  • Creating membership tables online

    - by JPJedi
    I want to create the membership tables online that are used for ASP.Net 3.5 login controls. I thought their was a script I could use or executable on my computer to install those tables. Is that the case? or what would be the best method to create the tables online.

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  • What are all the disadvantages of using files as a means of communicating between two processes?

    - by Manny
    I have legacy code which I need to improve for performance reasons. My application comprises of two executables that need to exchange certain information. In the legacy code, one exe writes to a file ( the file name is passed as an argument to exe) and the second executable first checks if such a file exists; if does not exist checks again and when it finds it, then goes on to read the contents of the file. This way information in transferred between the two executables. The way the code is structured, the second executable is successful on the first try itself. Now I have to clean this code up and was wondering what are the disadvantages of using files as a means of communication rather than some inter-process communication like pipes.Is opening and reading a file more expensive than pipes? Are there any other disadvantages? And how significant do you think would be the performance degradation. The legacy code is run on both windows and linux.

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