 To-do list for Null (SQL): edit · history · watch · refresh · Updated 2009-09-28
Add a graphic. Possibly a screenshot of a query with NULL in the results, or other relevant image.- Continual copyediting and improvement.
- Please review for redundancies so we can eliminate them if necessary.
- Displaying the equality operator's truth table is wrong (like all "regular" comparison operators comparing against NULL always results in UNKNOWN, so the current truth table is a general operator truth table). The IS operator must be used with booleans.
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&sq=Qlik&lang=&file=File:Crystal_kcontrol.svg){kind=small}
&sq=Qlik&lang=&file=File:People_icon_dead.svg){kind=icon}
