Überprüfen Sie, ob der Datensatz mySQL existiert
-- Returns 1 if exists, 0 else
SELECT EXISTS(SELECT 1 FROM my_table WHERE text LIKE '%something%');
SELECT
CASE
WHEN EXISTS(SELECT 1 FROM my_table WHERE text LIKE '%something%') = 1 THEN
'It exists'
ELSE 'Does not exist'
END;
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