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55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
package sqlite3
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import (
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"context"
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"github.com/c9s/rockhopper"
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)
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func init() {
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AddMigration(upTradeIndex, downTradeIndex)
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}
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func upTradeIndex(ctx context.Context, tx rockhopper.SQLExecutor) (err error) {
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// This code is executed when the migration is applied.
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_, err = tx.ExecContext(ctx, "CREATE INDEX trades_symbol ON trades(symbol);")
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if err != nil {
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return err
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}
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_, err = tx.ExecContext(ctx, "CREATE INDEX trades_symbol_fee_currency ON trades(symbol, fee_currency, traded_at);")
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if err != nil {
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return err
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}
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_, err = tx.ExecContext(ctx, "CREATE INDEX trades_traded_at_symbol ON trades(traded_at, symbol);")
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if err != nil {
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return err
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}
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return err
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}
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func downTradeIndex(ctx context.Context, tx rockhopper.SQLExecutor) (err error) {
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// This code is executed when the migration is rolled back.
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_, err = tx.ExecContext(ctx, "DROP INDEX trades_symbol;")
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if err != nil {
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return err
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}
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_, err = tx.ExecContext(ctx, "DROP INDEX trades_symbol_fee_currency;")
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if err != nil {
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return err
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}
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_, err = tx.ExecContext(ctx, "DROP INDEX trades_traded_at_symbol;")
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if err != nil {
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return err
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}
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return err
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}
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