Fix an adverse interaction between the IS NOT NULL optimization (available
only with SQLITE_ENABLE_STAT3) and the transitive constraint processing.
Fix for ticket [d805526eae253]
Make sure an adequate number of digits are shown for binary-to-text rendering
of very small floating point values.
Make sure the schema is verified prior to processing a "WHERE 0" on the
first term of a compound SELECT statement.
Fix for ticket [490a4b723562429]