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A new QgsStringUtils class has been added containing some common fuzzy matching algorithms, including Levenshtein edit distance and Soundex. These can be used for finding "similar" strings in a table. Expression functions for these algorithms have also been added to a new "Fuzzy Matching" group.
18 lines
685 B
Plaintext
18 lines
685 B
Plaintext
<h3>longest_common_substring function</h3>
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Returns the longest common substring between two strings. This substring is the longest
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string that is a substring of the two input strings. Eg, the longest common substring
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of "ABABC" and "BABCA" is "ABC". The substring is case sensitive.
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<h4>Syntax</h4>
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<pre>longest_common_substring(string1,string2)</pre>
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<h4>Arguments</h4>
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string1 → a string<br />
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string2 → a string<br />
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<h4>Example</h4>
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<pre> longest_common_substring('ABABC','BABCA') → 'ABC'</pre><br />
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<pre> longest_common_substring('abcDeF','abcdef') → 'abc'</pre><br />
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<pre> longest_common_substring(upper('abcDeF'),upper('abcdex')) → 'ABCDE'</pre>
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