feat: add day5 6 7

solutions/07.sql

@@ -0,0 +1,59 @@
+create or replace table day07_data as
+    select row_number() over () as line, column0
+  from read_csv('inputs/07/input.txt', header=false, delim='\n');
+create or replace table day07_test as
+    select row_number() over () as line, column0
+  from read_csv('inputs/07/test.txt', header=false, delim='\n');
+
+create or replace table day07_input as
+  select
+    line as y,
+    if(c = 'S', x, null) as starter,
+    if(c = '^', x, null) as splitter
+  from day07_test,
+    unnest(split(column0, '')) with ordinality as u(c, x)
+  where c != '.'
+;
+
+with recursive seq(y, x) as (
+  select
+    y,
+    starter as x
+  from day07_input
+  where y = 1
+
+  union all
+
+  select distinct
+    s.y + 1 as y,
+    if(m.splitter = s.x, unnest([s.x + 1, s.x - 1]), s.x) as x
+  from seq as s
+  left join day07_input as m
+    on m.y = s.y + 1 and m.splitter = s.x
+  where s.y <= (select max(y) from day07_input)
+)
+select count(1) as part1
+from seq s
+inner join day07_input m on s.y = m.y - 1 and s.x = m.splitter;
+
+with recursive seq(y, x) as (
+  select
+    y,
+    starter as x,
+    0 as split
+  from day07_input
+  where y = 1
+
+  union all
+
+  select
+    s.y + 1 as y,
+    if(m.splitter = s.x, unnest([s.x + 1, s.x - 1]), s.x) as x,
+    if(m.splitter = s.x, 1, 0) as split
+  from seq as s
+  left join day07_input as m
+    on m.y = s.y + 1 and m.splitter = s.x
+  where s.y <= (select max(y) from day07_input)
+)
+select sum(split) as part2
+from seq s;