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52 lines
2.2 KiB
SQL
52 lines
2.2 KiB
SQL
-- error cases
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SELECT extractGroups(); --{serverError 42} not enough arguments
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SELECT extractGroups('hello'); --{serverError 42} not enough arguments
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SELECT extractGroups('hello', 123); --{serverError 43} invalid argument type
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SELECT extractGroups(123, 'world'); --{serverError 43} invalid argument type
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SELECT extractGroups('hello world', '((('); --{serverError 427} invalid re
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SELECT extractGroups('hello world', materialize('\\w+')); --{serverError 44} non-const needle
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SELECT '0 groups, zero matches';
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SELECT extractGroups('hello world', '\\w+'); -- { serverError 36 }
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SELECT '1 group, multiple matches, String and FixedString';
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SELECT extractGroups('hello world', '(\\w+) (\\w+)');
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SELECT extractGroups('hello world', CAST('(\\w+) (\\w+)' as FixedString(11)));
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SELECT extractGroups(CAST('hello world' AS FixedString(12)), '(\\w+) (\\w+)');
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SELECT extractGroups(CAST('hello world' AS FixedString(12)), CAST('(\\w+) (\\w+)' as FixedString(11)));
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SELECT extractGroups(materialize(CAST('hello world' AS FixedString(12))), '(\\w+) (\\w+)');
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SELECT extractGroups(materialize(CAST('hello world' AS FixedString(12))), CAST('(\\w+) (\\w+)' as FixedString(11)));
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SELECT 'multiple matches';
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SELECT extractGroups('abc=111, def=222, ghi=333 "jkl mno"="444 foo bar"', '("[^"]+"|\\w+)=("[^"]+"|\\w+)');
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SELECT 'big match';
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SELECT
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length(haystack), length(matches), arrayMap((x) -> length(x), matches)
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FROM (
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SELECT
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repeat('abcdefghijklmnopqrstuvwxyz', number * 10) AS haystack,
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extractGroups(haystack, '(abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz)') AS matches
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FROM numbers(3)
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);
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SELECT 'lots of matches';
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SELECT
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length(haystack), length(matches), arrayReduce('sum', arrayMap((x) -> length(x), matches))
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FROM (
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SELECT
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repeat('abcdefghijklmnopqrstuvwxyz', number * 10) AS haystack,
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extractGroups(haystack, '(\\w)') AS matches
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FROM numbers(3)
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);
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SELECT 'lots of groups';
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SELECT
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length(haystack), length(matches), arrayMap((x) -> length(x), matches)
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FROM (
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SELECT
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repeat('abcdefghijklmnopqrstuvwxyz', number * 10) AS haystack,
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extractGroups(haystack, repeat('(\\w)', 100)) AS matches
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FROM numbers(3)
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);
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