Changes in release 3.19.3
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* Fixed `SELECT' with grouping on `BLOB' columns not to return
incorrect `BLOB' info. Grouping, sorting and distinct on `BLOB'
columns will not yet work as expected (probably it will group/sort
by the first 7 characters in the `BLOB'). Grouping on formulas
with a fixed string size (use `MID()' on a `BLOB') should work.
* When doing a full join (no direct keys) on multiple tables with
`BLOB' fields, the `BLOB' was garbage on output.
* Fixed `DISTINCT' with calculated columns.