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10 more do's and don'ts for faster SQL queries

Everyone wants faster database queries, and both SQL developers and DBAs can turn to many time-tested methods to achieve that goal. Unfortunately, no single method is foolproof or ironclad. But even if there is no right answer to tuning every query, there are plenty of proven do's and don'ts to help light the way. While some are RDBMS-specific, most of these tips apply to any relational database.
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Get to know iOS 8: Messages gets new ways to communicate

Messages is arguably the most useful communications tool on your iPhone. What started as a way to make SMS text conversations easier to follow has blossomed into a full-fledged communication powerhouse. And in iOS 8, Messages is better than it's ever been. Ironically, one of its best new tricks is the equivalent of leaving an old-fashioned voicemail--only now that's way more useful because it lives alongside the texts, photos, videos, and shared locations you keep in Messages already. Let's walk through what's new and cool in Apple's chat app.
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