How to represent object in literal?

[Xuanwo]

I can represent array/tuple by

SELECT ('a', 1, true); -> tuple
SELECT [1, 2, 3]; -> array

But how to present an object in literal without parse_json? With this support, I can implement something like:

my_table_function({
  'arg1': 123
})

cc @andylokandy & @b41sh for help.

[Xuanwo]

Maybe we can implement an Object in Expr?

[andylokandy]

It's not supported yet but we can make it a syntax sugar if desired.

[b41sh]

new expression add a new data type map, maybe we can convert {'arg1': 123} to map.

[Xuanwo]

{'arg1': 123} => map, and {arg1 => 123} to object?

[b41sh]

We will remove Array and Object data types in the future, and use Variant instead.
And we can support converting string literals like "{\"arg1\": 123}" to Variant without the parse_json function.