Yes/NoBy default, an Access Yes/No column is converted to an SQL Server bit field. To avoid record locking, Make sure the bit field is set to disallow NULL values. IN SSMA, you can select the bit column to set theAllow Nullsproperty to NO. In TSQL, use theCREATE TABL...
You may be tempted to have a single field for full names, or for product names along with product descriptions. If you combine more than one kind of information in a field, it is difficult to retrieve individual facts later. Try to break down information into logical parts; for example, c...
This can cause a query plan to be inefficient for some values of the parameter, also known as a parameter sensitive plan. Parameterized queries can have multiple cached query plans for different selectivity categories of a parameter. Parameter sensitive plan optimization is enabled by default in ...
This could lead to an inconsistent model state unless you manually restore the original field values. For example, given MyModel with an active field, this snippet ensures that the if obj.active check at the end uses the correct value if updating active to True fails in the transaction: ...
Hitting the database multiple times for different parts of a single ‘set’ of data that you will need all parts of is, in general, less efficient than retrieving it all in one query. This is particularly important if you have a query that is executed in a loop, and could therefore ...
Add a date and time hidden field in a form Add a file path in the web config file? add assembly to GAC_MSIL Add byte array column to datatable Add code behind file to an existing page Add css and javascript to html file dynamically in c# add datarow matching multiple column values ad...
values of the parameter, also known as a parameter sensitive plan.Parameterized queries can have multiple cached query plans for different selectivity categories of a parameter. Parameter sensitive plan optimization is enabled by default in compatibility level 160. For more information, seePSP ...
Database for PostgreSQL. The following are suggested configurations for different scenarios. When copying data into file-based data store, it's recommended to write to a folder as multiple files (only specify folder name), in which case the performance is better than writing to a single file....
Because the documents did not include_id,mongodcreates and adds the_idfield for each document and assigns it a uniqueObjectId()value. TheObjectIdvalues are specific to the machine and time when the operation is run. As such, your values may differ from those in the example. ...
create table cards ( id INT, name VARCHAR(50), planeswalker BOOLEAN, signature_spell BOOLEAN ); insert into cards (id, name, planeswalker, signature_spell) values (1, 'Norby', false, true),(2, 'Johanna', true, false), (3, 'Killian', false, true), (4, 'Madalyn', f...