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14 lines
715 B
SQL
14 lines
715 B
SQL
-- the query is so complex because we accidentally stored unique constraint case sensitive
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-- the query checks first if there is a case sensitive match and afterwards if there is a case insensitive match
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(instance_id = $%[1]d AND unique_type = $%[2]d AND unique_field = (
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SELECT unique_field from (
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SELECT instance_id, unique_type, unique_field
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FROM eventstore.unique_constraints
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WHERE instance_id = $%[1]d AND unique_type = $%[2]d AND unique_field = $%[3]d
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UNION ALL
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SELECT instance_id, unique_type, unique_field
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FROM eventstore.unique_constraints
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WHERE instance_id = $%[1]d AND unique_type = $%[2]d AND unique_field = LOWER($%[3]d)
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) AS case_insensitive_constraints LIMIT 1)
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)
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