Impact of Querying Table Information From information_schema
Percona
MARCH 27, 2023
A lot of useful information can be retrieved from this schema, for example, table metadata and foreign key relations, but trying to query I_S can induce performance degradation if your server is under heavy load, as shown in the following example test. performance degradation. That is (46320 – 38472) * 100 / 46320 = 16.9%
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