Allow columns to have variant type, using SQL type name "ANY", and allow rows to have undeclared fields, using a field called "_extra".
Driver handler allows sub-classed drivers to execute hooks when creating a connection, etc. It is orthogonal to the Factory extension mechanism.
Trace generated Java code; fix typo.
Fix bug counting number of records inserted; linq4j was incorrectly inlining a variable.
Allow type of columns in a VALUES clause to be dictated by the target columns of an INSERT statement. Important when VALUES contains character literals (of type CHAR, with trailing spaces) and the target column is a VARCHAR. Remove the dummy SELECT wrapper we used to create around each VALUES.