Wednesday 22 July 2015

Sql query to find records in one table not in another

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  http://www.vb6.us/tutorials/introduction-sql-structured-query-language
This is because the ShipperID field is defined as an Autonumber field, thus, whenever a new record is added to the Shippers table, the ShipperID field will automatically populate with the next available number. This would leave out records where the ReportsTo field is NULL, perhaps indicating that the employee is a supervisor and doesn't report to another employee in the Employees table (as is the case for Andrew Fuller)

  http://database.ittoolbox.com/groups/technical-functional/sql-server-l/how-to-copy-column-data-from-one-table-to-another-table-in-sql-4826967
Ram Sagar Mourya replied Jun 25, 2012 First thing you need to insert only Col1 data from TableA to TableB , then afterwards update the col2, col3 , col4.... Laxmi Chary replied Jun 25, 2012 As per requirement, first I need to copy only one column(col1) data after few actions required another col2 data required

  http://guides.rubyonrails.org/active_record_querying.html
This method will query the database using the same query as find, but instead of returning an object or collection of objects it will return either true or false. 1.1 Retrieving a Single ObjectActive Record provides several different ways of retrieving a single object.1.1.1 find Using the find method, you can retrieve the object corresponding to the specified primary key that matches any supplied options

  http://docs.oracle.com/cd/B10500_01/appdev.920/a96624/05_colls.htm
Because associative arrays are intended for temporary data rather than storing persistent data, you cannot use them with SQL statements such as INSERT and SELECT INTO. When the remote database performs operations such as FIRST and NEXT, it uses its own character order even if that is different from the order where the collection originated

Microsoft Access Query Tips and Techniques with SQL and VBA Code


  http://www.fmsinc.com/tpapers/queries/index.html
For instance, if you are generating a series of reports while other people are changing the data, a Make Table query can create a snapshot of your data and allow your reports to work off that table. For multi-table queries, if it is set to Yes, (similar to using a DISTINCTROW in a SQL statement) only unique records in the underlying tables are retrieved

  http://blog.sqlauthority.com/2009/07/29/sql-server-2008-copy-database-with-data-generate-t-sql-for-inserting-data-from-one-table-to-another-table/
Select the desired output options of Script to file, Script to Clipboard or Script New Query Window.3 Clicking on Finish button will generate a review screen containing the required objects along with script generating data. i have a procedure for this which needs a table in your DB which stores information about the other server and the tables which we going to send over two servers

  http://blog.sqlauthority.com/2007/01/10/sql-server-query-to-find-number-rows-columns-bytesize-for-each-table-in-the-current-database-find-biggest-table-in-database/
script the source table and then run the script on destination, where you want to create the table, this will create a table with the same name with all the features of the source table. Tha query will give you properties for that table (columns, keys, values, etc.) I want to pull the same properties from a result set that is not already a table

  http://javarevisited.blogspot.com/2012/12/how-to-find-duplicate-records-in-table-mysql-query-example.html
You can see in first query that it listed Ruby as duplicate record even though both Ruby have different phone number because we only performed group by on name. Can you please write something about DB performance tuning as well as its being repetitvely asked to me and am unable to convince a great deal as I havent really worked on such scenarios December 17, 2012 at 8:07 AM Anonymous said..

database - SQL query to find record with ID not in another table - Stack Overflow


  http://stackoverflow.com/questions/12048633/sql-query-to-find-record-with-id-not-in-another-table
For example, Table1 has columns (ID, Name) and sample data: (1 ,John), (2, Peter), (3, Mary) Table2 has columns (ID, Address) and sample data: (1, address2), (2, address2) So how do I create a SQL query so I can fetch the row with ID from table1 that is not in table2

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