BREAKING CHANGE: use other methods for pinging the database

BREAKING CHANGE: functions, methods and classes marked as deprecated are removed now

BREAKING CHANGE: removed Node.root_tables() method, use ibis.expr.analysis.find_immediate_parent_tables() instead

The DestructValue expressions didn't have corresponding operation nodes.

BREAKING CHANGE: removed ir.DestructValue, ir.DestructScalar and ir.DestructColumn, use table.unpack() instead

BREAKING CHANGE: ibis.expr.lineage.lineage() is now removed

also make the Signature object validatable

BREAKING CHANGE: use ibis.common.validators.{Patameter, Signature} instead

Unify the result of pandas/dask with the rest of the backends

BREAKING CHANGE: Use timezone conversion functions to compute the original machine localized value

The objective of this refactor is to achieve a simpler, stricter and
more generic internal representation by removing intermediate Expression
objects so there is a single Expression object wrapping an Operation
tree only to provide the user-facing API but all the internals work with
homogeneous Operation trees.

BREAKING CHANGE: Expr(Op(Expr(Op(Expr(Op))))) is now represented as
Expr(Op(Op(Op))), so code using ibis internals must be migrated

…imported for types

BREAKING CHANGE: Removed Node.output_type in favor of abstractmethod Node.to_expr() which now must be explicitly implemented

…class for ops.Selection

BREAKING CHANGE: HasSchema is no longer available, directly subclass ops.TableNode and implement schema property instead

…dling

BREAKING CHANGE: Node.blocks() method has been removed.

…ggregation

… of the pandas backend

BREAKING CHANGE: removed ops.Node.inputs property, use the multipledispatched get_node_arguments() function in the pandas backend

previously node attributes contained tuple of other nodes which required additional isinstance checks for traversals, now all the traversable elements of the tree are node instances

BREAKING CHANGE: removed Node.flat_args(), directly use node.args property instead

…aming semantics

BREAKING CHANGE: node.has_resolved_name() is removed, use isinstance(node, ops.Named) instead; node.resolve_name() is removed use node.name instead

This avoids the large number of repeated traversals on construction.

…able

BREAKING CHANGE: Annotable is mutable by default now

updates:
- [github.com/asottile/pyupgrade: v2.37.3 → v2.38.0](asottile/pyupgrade@v2.37.3...v2.38.0)

This package incorrect requires setuptools at runtime which causes nix
builds to break with an infinite recursion error, because setuptools is
required for bootstrapping. I put up a PR to address this a few days
ago--gotcha/ipdb#254 it's not clear whether
the project is maintained.