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Categories
Category Archives: SQL
SQL Snapshot Notes
Sometimes when testing you need to repetitively restore a database back to a certain point in time. For very large databases the regular SQL restore can take quite a while. It seemed to me that using snapshots instead of regular … Continue reading
Posted in CodeMinder, SQL
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Force a SQL Restore
Really tired of having to google this and piece it together every time I want it, so I’m posting it here. <span class="kwrd">alter</span> <span class="kwrd">database</span> DbName <span class="kwrd">set</span> single_user <span class="kwrd">with</span> <span class="kwrd">rollback</span> <span class="kwrd">immediate</span> <span class="kwrd">go</span> <span class="kwrd">restore</span> <span … Continue reading
Posted in CodeMinder, SQL
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Update a SQL table’s XML value to insert a node
Sometimes a snippet of example code is all that’s needed: <span class="kwrd">update</span> MyTable <span class="kwrd">set</span> XmlColumn.<span class="kwrd">modify</span>(<span class="str">' insert <Description>This is a description</Description> as last into (/xpath/to/parent)[1] '</span>) <span class="kwrd">where</span> SomeValue = <span class="str">'whatever'</span>
Posted in CodeMinder, Programming, SQL, XML
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SQL Injection Joke (with a lesson)
At a recent team stand up meeting I passed along a joke I caught on twitter: A SQL Injection walks into a bar, starts to quote something but stops, drops a table, then dashes out. The joke is a … Continue reading
Posted in Programming, SQL
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Drop a SQL column default constraint that has been implicitly named
CodeMinder: to remind myself of stuff that I usually have to look up each time I do it. Notice the unnamed default in the following line: alter table test add col1 int not null default 1 This creates a default … Continue reading
Posted in CodeMinder, Programming, SQL
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Update a SQL table’s XML value to remove nodes
CodeMinder: to remind myself of stuff that I usually have to look up each time I do it. To delete all PersonAlternativeName nodes from XmlColumn of the People table: <span style="color: #0000ff;">with</span><span style="color: #000000;"> xmlnamespaces( </span><span style="color: #ff0000;">'</span><span style="color: #ff0000;">http://mydomain.com/person/extension/0.1</span><span … Continue reading
Posted in CodeMinder, Programming, SQL, XML
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Select multiple XML nodes out of each row in a SQL table
CodeMinder: to remind myself of stuff that I usually have to look up each time I do it. If a People table has a column named XML, and the XML column may specify multiple PersonAlternativeName entities, then to get all … Continue reading
Posted in CodeMinder, SQL, XML
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