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up vote 1 down vote favorite

How would I find address records the do not contain a digit followed by a space? (eg., 15SMith St. as opposed to 15 Smith St)

WHERE a.address not like '.[0-9] .'

is clearly not working for me.

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1  
What about WHERE a.address NOT SIMILAR TO '%[0-9] %'? – Wiktor Stribiżew 2 days ago
    
Perfect! Thank You! – Tony Hendrix 2 days ago
up vote 2 down vote accepted

You may use SIMILAR TO with NOT and a pattern that is a "a curious cross between LIKE notation and common regular expression notation". It supports [0-9]:

A bracket expression [...] specifies a character class, just as in POSIX regular expressions.

So, you may use

WHERE a.address NOT SIMILAR TO '%[0-9] %'

Here, % matches any number of any chars, [0-9] matches any digits, a space matches a space and then % again matches any number of any chars. These % are necessary because SIMILAR TO requires a full string match, same as LIKE.

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