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| 20. 25. 2. 更新标注 |
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The Update annotation is used to decorate a method specifying an SQL update statement. |
The method's return value can be an int or void. |
Only if the return value type is int will the update count be returned. |
| Element | Type | Accessibility | | sql or value | String | The SQL statement to be executed | | keys | Generated Keys | Indicates if autogenerated keys are returned. The default value is GeneratedKeys.NO_KEYS_RETURNED |
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import java.sql.BaseQuery;
import java.sql.DataSet;
import java.sql.Select;
public interface UserQueries extends BaseQuery {
// Delete user
@Update ("DELETE Users WHERE firstName={firstName}" +
"AND lastName={lastName}")
int deleteUser (String firstName, String lastName);
}
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| 20. 25. JDBC注释 | | 20. 25. 1. | JDBC的说明 | | | | 20. 25. 2. | 更新标注 | | |
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