27 lines
690 B
Python
27 lines
690 B
Python
"""
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This module contains a db migration.
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Migration Name: add_status_index
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Migration Version: 20251116173731
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"""
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async def upgrade(connection):
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"""
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Add index on json_extract(data, '$.status') for better query performance.
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This index improves performance when filtering items by status field,
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which is stored in the JSON data column.
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"""
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sql = """
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CREATE INDEX IF NOT EXISTS "history_status" ON "history" (json_extract("data", '$.status'));
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"""
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await connection.execute(sql)
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async def downgrade(connection):
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"""
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Remove the status index.
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"""
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sql = """
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DROP INDEX IF EXISTS "history_status";
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"""
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await connection.execute(sql)
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