Increase redshift path inputs to use max varchar instead of default 2…

…56 (Close #26)

macros/path_transformations/create_udfs.sql

@@ -180,7 +180,7 @@
   {% set trim_long_path %}
   -- Returns the last snowplow__path_lookback_steps channels in the path if snowplow__path_lookback_steps > 0,
   -- or the full path otherwise.
-  create or replace function {{target.schema}}.trim_long_path(path varchar, snowplow__path_lookback_steps integer)
+  create or replace function {{target.schema}}.trim_long_path(path varchar(max), snowplow__path_lookback_steps integer)
   returns varchar
   stable
   AS $$
@@ -211,7 +211,7 @@
   {% set remove_if_not_all %}
   -- Returns the path with all copies of targetElem removed, unless the path consists only of
   -- targetElems, in which case the original path is returned.
-  create or replace function {{target.schema}}.remove_if_not_all(path varchar, target_elem varchar)
+  create or replace function {{target.schema}}.remove_if_not_all(path varchar(max), target_elem varchar)
   returns varchar
   stable
   AS $$
@@ -237,7 +237,7 @@
   {% set remove_if_last_and_not_all %}
   -- Returns the path with all copies of targetElem removed from the tail, unless the path consists
   -- only of targetElems, in which case the original path is returned.
-  create or replace function {{target.schema}}.remove_if_last_and_not_all(path varchar, target_elem varchar)
+  create or replace function {{target.schema}}.remove_if_last_and_not_all(path varchar(max), target_elem varchar)
   returns varchar
   stable
   AS $$
@@ -268,7 +268,7 @@
   {% set unique %}
   -- Returns the unique/identity transform of the given path array.
   -- E.g. [D, A, B, B, C, D, C, C] --> [D, A, B, B, C, D, C, C].
-  create or replace function {{target.schema}}.unique_path(path varchar)
+  create or replace function {{target.schema}}.unique_path(path varchar(max))
   returns varchar
   stable
   AS $$
@@ -283,7 +283,7 @@
   -- Sequential duplicates are collapsed.
   -- E.g. [D, A, B, B, C, D, C, C] --> [D, A, B, C, D, C].
 
-  create or replace function {{target.schema}}.exposure_path(path varchar)
+  create or replace function {{target.schema}}.exposure_path(path varchar(max))
   returns varchar
   stable
   AS $$
@@ -307,7 +307,7 @@
   -- Returns the first transform of the given path array.
   -- Repeated channels are removed.
   -- E.g. [D, A, B, B, C, D, C, C] --> [D, A, B, C].
-  create or replace function {{target.schema}}.first_path(path varchar)
+  create or replace function {{target.schema}}.first_path(path varchar(max))
   returns varchar
   stable
   AS $$
@@ -330,7 +330,7 @@
   -- Returns the frequency transform of the given path array.
   -- Repeat events are removed, but tracked with a count.
   -- E.g. [D, A, B, B, C, D, C, C] --> [D(2), A(1), B(2), C(3)].
-  create or replace function {{target.schema}}.frequency_path(path varchar)
+  create or replace function {{target.schema}}.frequency_path(path varchar(max))
   returns varchar
   stable
   AS $$