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- Timestamp:
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11/27/15 11:54:15 (8 years ago)
- Author:
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jballanco-x
- Comment:
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| 1 | | Actually my past experience is related to MySQL (though I'll do a bit of research to see what Oracle has to say as well). Specifically, from |
| | 1 | Actually my past experience is related to MySQL (though I'll do a bit of research to see what Oracle has to say as well). Specifically, from [http://dev.mysql.com/doc/refman/5.7/en/blob.html this] page: |
| 2 | 2 | |
| 3 | 3 | > * Instances of BLOB or TEXT columns in the result of a query that is processed using a temporary table causes the server to use a table on disk rather than in memory because the MEMORY storage engine does not support those data types (see Section 8.4.4, “How MySQL Uses Internal Temporary Tables”). Use of disk incurs a performance penalty, so include BLOB or TEXT columns in the query result only if they are really needed. For example, avoid using SELECT *, which selects all columns. |
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