Added the --tabs command-line option that sets
+ .mode tabs.
+
The --init option reports an error if the file named as its argument
+ cannot be opened. The --init option also now honors the --bail option.
+
+
Query planner improvements:
+
+
Improved estimates for the cost of running a DISTINCT operator.
+
When doing an UPDATE or DELETE using a multi-column index where
+ only a few of the earlier columns of the index are useful for the
+ index lookup, postpone doing the main table seek until after all
+ WHERE clause constraints have been evaluated, in case those
+ constraints can be covered by unused later terms of the index,
+ thus avoiding unnecessary main table seeks.
+
The new OP_SeekScan opcode is used to improve performance of
+ multi-column index look-ups when later columns are constrained
+ by an IN operator.
+
+
The BEGIN IMMEDIATE and BEGIN EXCLUSIVE commands now work even
+ if one or more attached database files are read-only.
+
Improved performance of WAL mode locking primitives in cases where
+ there are hundreds of connections all accessing the same database file
+ at once.
+