Functionsยง
- aexpr_
output_ name - aexpr_
to_ leaf_ name - aexpr_
to_ leaf_ names - aexpr_
to_ leaf_ names_ iter - column_
node_ to_ name - comma_
delimited - Utility to write comma delimited strings
- expr_
output_ name - output name of expr
- expr_
to_ leaf_ column_ name - unpack alias(col) to name of the root column name
- expr_
to_ leaf_ column_ names - This should gradually replace expr_to_root_column as this will get all names in the tree.
- expr_
to_ leaf_ column_ names_ iter - expressions_
to_ schema - Take a list of expressions and a schema and determine the output schema.
- has_
aexpr - has_
aexpr_ literal - has_
aexpr_ window - has_
expr - Can check if an expression tree has a matching_expr. This requires a dummy expression to be created that will be used to pattern match against.
- has_
null - merge_
schemas - Concatenate multiple schemas into one, disallowing duplicate field names