Support for duckdb's fancy Syntaxes

[aersam]

DuckDB supports a number of interesting features, not all are supported yet.
See https://duckdb.org/2023/08/23/even-friendlier-sql.html

Here's what's not supported:

FROM first

import sqlglot

sql = """FROM my_table SELECT my_column"""
sqlglot.parse_one(sql, read="duckdb")

Union BY NAME

import sqlglot
sql = """ SELECT 
          'Revenge is a dish best served cold' AS klingon_proverb 
     UNION ALL BY NAME 
     SELECT 
          'You will be assimilated' AS borg_proverb,
          'If winning is not important, why keep score?' AS klingon_proverb"""
sqlglot.parse_one(sql, read="duckdb")

Insert By Name

import sqlglot

sql = """INSERT INTO proverbs BY NAME 
     SELECT 'Resistance is futile' AS borg_proverb"""
sqlglot.parse_one(sql, read="duckdb")

List Comprehensions

import sqlglot

sql = """SELECT 
     [x.string_split(' ')[1] 
     FOR x IN ['Enterprise NCC-1701', 'Voyager NCC-74656', 'Discovery NCC-1031'] 
     IF x.contains('1701')] AS ready_to_boldly_go"""
sqlglot.parse_one(sql, read="duckdb")

That's it I think. In general I was surprised how much is already supported by sqlglot, thanks a lot for this!