Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>There are a few options you could take, the "fastest" really depends on your database.</p> <p>To firstly answer your questions on seeding, etc - TRUNCATE TABLE will delete all information in a table (very fast, as it is not logged) and will reset your identity column.</p> <p>eg:</p> <pre><code>TRUNCATE TABLE dbo.table </code></pre> <p><a href="http://msdn.microsoft.com/en-us/library/aa260621(SQL.80).aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/aa260621(SQL.80).aspx</a></p> <p>The significant restriction here is that you cannot use it on a table that is referenced by another table. In this case you can use a standard delete and then use DBCC CHECKIDENT</p> <p>eg:</p> <pre><code>DELETE FROM dbo.table GO DBCC CHECKIDENT(dbo.table, reseed, 0) </code></pre> <p><a href="http://msdn.microsoft.com/en-us/library/ms176057.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/ms176057.aspx</a></p> <p>Remember with delete to make sure you delete information in the correct order (i.e. taking into account foreign keys).</p> <p>Another approach I often use is simply writing a complete tear-down / rebuild script when I want to reset the database. The basic premise is to tear down, or drop all database objects at the beginning of the script and then recreate them. This is not necessarily a solution for all scenarios, but for basic tasks works well for me. To avoid errors I would usually add my drop statements in IF statements, eg:</p> <pre><code>IF EXISTS ( SELECT * FROM information_schema.tables WHERE table_name = 'table' AND table_schema = 'dbo' ) BEGIN DROP TABLE dbo.table END </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POQuickest way to delete all content in a database and rebuild from scratch?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USChris
    1. USChris
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POQuickest way to delete all content in a database and rebuild from scratch?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COMany thanks + 1
      singulars
      1. PO
      1. USWil
    2. COI can't get truncate working - it randomly changes indexes - sometimes starts from 3, other times 1 but your second method/example works perfectly... I copied and pasted it 6 times with different names and can run together - it resets everything and does **exactly** what I need. Many thanks.
      singulars
      1. PO
      1. USWil
    3. COThanks, happy to help :) Sounds odd behavior with the truncate, if you ever start dealing with very large amounts of data you may have to revisit this method - but if you get there let us know and we can help you resolve the issue
      singulars
      1. PO
      1. USChris
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload