[lemma=even | tag=RB] | [□ | □]
[lemma=even | tag=RB] | [□=□ | □]
[lemma=even | tag=RB] | [□ & □ | □]
Code written in SQL are even more trivial to add to the server . The script files are in text format and can be used to reconstruct the database , even on other machines and other architectures . Incorrect use of an optimization clause can result in backend crashes , subtly wrong output , or other Bad Things . Nearly every catalog contains some reference to instances in one or both of these classes . The HASHES flag indicates to the query optimizer that a hash join may safely be used with this operator . In fact , a viable solution to the shortage of engineers is surprisingly obvious . So , even if it works for you today , you might regret overloading names later when you try to run the code somewhere else . Now as EWB turns its attention to recovery and reconstruction efforts in the most often overlooked towns and villages damaged and destroyed by the tsunami last December , we appreciate its outreach even more . You can frequently get away with using either eqsel or neqsel for operators that have very high or very low selectivity , even if they are n't really equality or inequality . Unless you have problems later on , these messages may be safely ignored .