25 lines
658 B
Go
25 lines
658 B
Go
package upgrades
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import (
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"database/sql"
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)
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func init() {
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upgrades[1] = upgrade{"Add ON DELETE CASCADE to message table", func(dialect Dialect, tx *sql.Tx) error {
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if dialect == SQLite {
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// SQLite doesn't support constraint updates, but it isn't that careful with constraints anyway.
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return nil
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}
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_, err := tx.Exec("ALTER TABLE message DROP CONSTRAINT message_chat_jid_fkey")
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if err != nil {
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return err
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}
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_, err = tx.Exec(`ALTER TABLE message ADD CONSTRAINT message_chat_jid_fkey
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FOREIGN KEY (chat_jid, chat_receiver) REFERENCES portal(jid, receiver)
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ON DELETE CASCADE`)
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if err != nil {
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return err
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}
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return nil
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}}
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}
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