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"""
Create mRNA resources table
"""
from yoyo import step
__depends__ = {'20230410_01_8mwaf-create-linked-mrna-data-table'}
steps = [
step(
"""
CREATE TABLE IF NOT EXISTS mrna_resources
-- Link mRNA data to specific resource
(
resource_id TEXT NOT NULL, -- A resource can have multiple items
data_link_id TEXT NOT NULL,
PRIMARY KEY (resource_id, data_link_id),
UNIQUE (data_link_id) -- ensure data is linked to single resource
FOREIGN KEY (data_link_id) REFERENCES linked_mrna_data(data_link_id)
ON UPDATE CASCADE ON DELETE RESTRICT
) WITHOUT ROWID
""",
"DROP TABLE IF EXISTS mrna_resources")
]
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