Guru: Regular Expressions, Part 2

In the first part of this series, I showed how to replace characters in a string using SQL and regular expressions. This time, I’ll show other regular expressions that are available for us to use. The regular expression functions I’ll show are REGEXP_COUNT and REGEXP_LIKE and the examples come from production programs that I’ve recently implemented.

In the first example (Figure 1), I want to get a count of the number of occurrences of a pattern within a string. To make this more interesting, I’m searching for two different patterns within a sting. To accomplish this objective, I used

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