bbgo_origin/pkg/migrations/20200819054742_trade_index.go
2021-01-15 10:31:37 +08:00

54 lines
1.2 KiB
Go

package migrations
import (
"context"
"github.com/c9s/rockhopper"
)
func init() {
rockhopper.AddMigration(upTradeIndex, downTradeIndex)
}
func upTradeIndex(ctx context.Context, tx rockhopper.SQLExecutor) (err error) {
// This code is executed when the migration is applied.
_, err = tx.ExecContext(ctx, "CREATE INDEX trades_symbol ON trades(symbol);")
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, "CREATE INDEX trades_symbol_fee_currency ON trades(symbol, fee_currency, traded_at);")
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, "CREATE INDEX trades_traded_at_symbol ON trades(traded_at, symbol);")
if err != nil {
return err
}
return err
}
func downTradeIndex(ctx context.Context, tx rockhopper.SQLExecutor) (err error) {
// This code is executed when the migration is rolled back.
_, err = tx.ExecContext(ctx, "DROP INDEX trades_symbol ON trades;")
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, "DROP INDEX trades_symbol_fee_currency ON trades;")
if err != nil {
return err
}
_, err = tx.ExecContext(ctx, "DROP INDEX trades_traded_at_symbol ON trades;")
if err != nil {
return err
}
return err
}