Bases: sqlalchemy.sql.compiler.SQLCompiler
used to compile <sql.expression.Update> expressions
only implements a subset of the SQLCompiler.visit_update method e.g. updating multiple tables is not supported.
change the params to enable partial updates
sqlalchemy by default only supports updates of complex types in the form of
“col = ?”, ({“x”: 1, “y”: 2}
but crate supports
“col[‘x’] = ?, col[‘y’] = ?”, (1, 2)
by using the Craty (MutableDict) type. The update statement is only rewritten if a item of the MutableDict was changed.
Bases: sqlalchemy.engine.default.DefaultDialect
alias of CrateCompiler