Null / Out of Bounds Error when running Liquibase - grails

Question

I am using the database-migration Grails plugin. But running dbm-update runs into fatal errors for some of my sql when using the liquibase formatted sql migrations. I get this error:
liquibase : 'Change Set GraphFunctions.sql::graph_functions_initialize_1::<user> failed. Error: null'
java.lang.ArrayIndexOutOfBoundsException
This happens when I run the code:
--changeset <username>:graph_functions_initialize_1
CREATE OR REPLACE FUNCTION build_trcd(
IN new_parent_id bigint,
IN new_child_id bigint)
RETURNS TABLE(ancestor_id bigint, descendant_id bigint, paths bigint, cost bigint) AS '
SELECT
t1.ancestor_id AS ancestor_id,
t2.descendant_id AS descendant_id,
SUM(t1.paths*t2.paths)::bigint AS paths,
MIN(t1."cost"+t2."cost")+1::bigint AS "cost"
FROM db_set_membership_closure t1, db_set_membership_closure t2
WHERE t1.descendant_id=new_parent_id AND t2.ancestor_id=NEW_child_id
GROUP BY t1.ancestor_id, t2.descendant_id
UNION
SELECT
NEW_parent_id AS ancestor_id,
descendant_id AS descendant_id,
paths AS paths ,
(c."cost" + 1)::bigint AS "cost"
FROM db_set_membership_closure c
WHERE ancestor_id = NEW_child_id
UNION
SELECT
ancestor_id AS ancestor_id,
NEW_child_id AS descendant_id,
paths AS paths,
c."cost" + 1::bigint AS "cost"
FROM db_set_membership_closure c
WHERE descendant_id = NEW_parent_id
UNION VALUES (NEW_parent_id, NEW_child_id,1::bigint,1::bigint);
' LANGUAGE sql;
--rollback drop function build_trcd;
If I don't use formatted-sql then it runs fine. However, if I do that, then I cannot manage a rollback through the Liquibase interface. Does anyone have an insight into what I might change to make this work?

Answer 1

It turns out that sql changesets including function declarations have been failing because they contain semi-colons in the middle of the create statement. To fix these errors I just had to change the formatted-sql to not split the statements:
--changeset <username>:graph_functions_initialize_1 splitStatements:false