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87b2d90725
Function that extracts from haystack all matching non-overlapping groups with regular expressions,
and put those into Array(Array(String)) column.
Example:
:) SELECT extractAllGroups('abc=111, def=222, "jkl mno"="444 foo bar"', '("[^"]+"|\\w+)=("[^"]+"|\\w+)');
┌─extractAllGroups('abc=111, def=222, "jkl mno"="444 foo bar"', '("[^"]+"|\\w+)=("[^"]+"|\\w+)')─┐
│ [['abc','def','"jkl mno"'],['111','222','"444 foo bar"']] │
└────────────────────────────────────────────────────────────────────────────────────────────────┘
24 lines
470 B
Plaintext
24 lines
470 B
Plaintext
0 groups, zero matches
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[]
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1 group, multiple matches, String and FixedString
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[['hello','world']]
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[['hello','world']]
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[['hello','world']]
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[['hello','world']]
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[['hello','world']]
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[['hello','world']]
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mutiple groups, multiple matches
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[['abc','def','ghi','"jkl mno"'],['111','222','333','"444 foo bar"']]
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big match
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0 1 0 []
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260 1 1 [156]
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520 1 3 [156,156,156]
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lots of matches
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0 1 0 0
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260 1 260 260
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520 1 520 520
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lots of groups
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0 100 0 []
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260 100 2 [1,1]
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520 100 5 [1,1,1,1,1]
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