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23 lines
411 B
MySQL
23 lines
411 B
MySQL
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-- Delete the empty ap_ids
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delete from activity where ap_id is null;
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-- Make it required
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alter table activity alter column ap_id set not null;
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-- Delete dupes, keeping the first one
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delete
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from activity
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where id not in (
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select min(id)
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from activity
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group by ap_id
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);
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-- The index
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create unique index idx_activity_ap_id on activity(ap_id);
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-- Drop the old index
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drop index idx_activity_unique_apid;
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