user
73 lines
1.6 KiB
PL/PgSQL
73 lines
1.6 KiB
PL/PgSQL
-- Функция: нет двойных пробелов подряд
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CREATE OR REPLACE FUNCTION no_double_space (str text)
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RETURNS boolean
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AS $$
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BEGIN
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RETURN str !~ E'\s{2,}';
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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-- Функция: нет пробелов в начале и конце строки
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CREATE OR REPLACE FUNCTION no_space_start_end (str text)
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RETURNS boolean
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AS $$
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BEGIN
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RETURN str !~ E'^\s'
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AND str !~ E'\s$';
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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-- Функция: нет пробелов вообще
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CREATE OR REPLACE FUNCTION no_space (str text)
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RETURNS boolean
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AS $$
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BEGIN
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RETURN str !~ E'\s';
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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-- Функция: длина строки в заданных границах
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CREATE OR REPLACE FUNCTION str_length_between (str text, min_len int, max_len int)
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RETURNS boolean
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AS $$
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BEGIN
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RETURN LENGTH(str) BETWEEN min_len AND max_len;
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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-- Функция: стандартная проверка для слова
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CREATE OR REPLACE FUNCTION default_word_check (str text)
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RETURNS boolean
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AS $$
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BEGIN
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RETURN str IS NULL
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OR no_space (str)
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AND str_length_between (str, 1, 64);
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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-- Функция: стандартная проверка для строки
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CREATE OR REPLACE FUNCTION default_str_check (str text)
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RETURNS boolean
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AS $$
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BEGIN
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RETURN str IS NULL
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OR no_double_space (str)
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AND no_space_start_end (str)
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AND str_length_between (str, 1, 128);
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END;
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$$
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LANGUAGE plpgsql
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IMMUTABLE;
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