timsaucer commented on code in PR #1475:
URL:
https://github.com/apache/datafusion-python/pull/1475#discussion_r3051554793
##########
python/datafusion/context.py:
##########
@@ -1141,6 +1142,120 @@ def session_id(self) -> str:
"""Return an id that uniquely identifies this
:py:class:`SessionContext`."""
return self.ctx.session_id()
+ def session_start_time(self) -> str:
+ """Return the session start time as an RFC 3339 formatted string.
+
+ Examples:
+ >>> ctx = SessionContext()
+ >>> start_time = ctx.session_start_time()
+ >>> assert "T" in start_time # RFC 3339 contains a 'T' separator
+ """
+ return self.ctx.session_start_time()
+
+ def enable_ident_normalization(self) -> bool:
+ """Return whether identifier normalization (lowercasing) is enabled.
+
+ Examples:
+ >>> ctx = SessionContext()
+ >>> assert isinstance(ctx.enable_ident_normalization(), bool)
+ """
+ return self.ctx.enable_ident_normalization()
+
+ def parse_sql_expr(self, sql: str, schema: DFSchema) -> Expr:
+ """Parse a SQL expression string into a logical expression.
+
+ Args:
+ sql: SQL expression string.
+ schema: Schema to use for resolving column references.
+
+ Returns:
+ Parsed expression.
+
+ Examples:
+ >>> from datafusion.common import DFSchema
+ >>> ctx = SessionContext()
+ >>> schema = DFSchema.empty()
+ >>> expr = ctx.parse_sql_expr("1 + 2", schema)
+ >>> assert "Int64(1) + Int64(2)" in str(expr)
+ """
+ from datafusion.expr import Expr # noqa: PLC0415
+
+ return Expr(self.ctx.parse_sql_expr(sql, schema))
Review Comment:
If we do that then we get the unwrapped inner PyExpr, which wouldn't be
usable later on.
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