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Регулярное выражение, ограничить количество
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--Oracle 11g Express Edition --please drop objects you've created at the end of the script --or check for their existance before creating --'\\' is a delimiter --Регулярное выражение, ограничить количество with t as ( select 1 n, '_170_' s from dual union all select 2, '%170_' from dual union all select 3, '171%' from dual union all select 4, '172_' from dual union all select 5, '173' from dual union all select 6, '123456789012345678_%' from dual union all select 7, '12345678901234567890_%' from dual ) select n, s, length(s) l from t where not regexp_like(s, q'~[^[:digit:]_%]| .{21,}| ^[:digit:][[:digit:]_]*$| ^[:digit:][[:digit:]%]*$| ^%[%[:digit:]]*$| ^%[%_]*$| ^_[_[:digit:]]*$| ^_[_%]*$~', 'x')
absolute service time: 1,36 sec
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N
S
L
1
2
%170_
5
2
3
171%
4
3
4
172_
4
4
5
173
3
5
6
123456789012345678_%
20