Mercurial > hg > orthanc-databases
diff MySQL/Plugins/GetLastChangeIndex.sql @ 87:48d445f756db db-changes
new extension implemented for MySQL: GetLastChangeIndex
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 10 Jan 2019 20:39:36 +0100 |
parents | |
children | 740d9829f52e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MySQL/Plugins/GetLastChangeIndex.sql Thu Jan 10 20:39:36 2019 +0100 @@ -0,0 +1,16 @@ +CREATE TABLE GlobalIntegers( + property INTEGER PRIMARY KEY, + value BIGINT + ); + + +INSERT INTO GlobalIntegers +SELECT 0, COALESCE(MAX(seq), 0) FROM Changes; + + +CREATE TRIGGER ChangeAdded +AFTER INSERT ON Changes +FOR EACH ROW +BEGIN + UPDATE GlobalIntegers SET value = new.seq WHERE property = 0@ +END;