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Why need a lock? - Mailing list pgsql-hackers

From jacktby jacktby
Subject Why need a lock?
Date
Msg-id 8687F927-65A1-441F-8DCE-0D3AFF8A59F1@gmail.com
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Responses Re: Why need a lock?
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I find this in source code
#define ShareLock                5    /* CREATE INDEX (WITHOUT CONCURRENTLY) */
I think if there is no CONCURRENTLY, so why we need a lock, I think that’s unnecessary. What’s the point?

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