`id` INT NOT NULL AUTO_INCREMENT, `name` TEXT NOT NULL, PRIMARY KEY (`id`), UNIQUE (`id`) ); Now i'm inserting a row like this: command = connection.CreateCommand(); command.CommandText = "INSERT INTO `images` (`id`, `name`) VALUES (NULL, 'test');"; MySqlDataRe...
mysql获取自增主键有两种方式: 1.last_insert_id()是MYSQL提供的返回当前客户端(其实就是和Connection相关)最后一个insert或update中设置为AUTO_INCREMENT列的值。 2.getGeneratedKey() 二者区别以及使用场景介绍: selectKey和useGeneratedKeys的异同 概括来说selectKey用于单个记... ...
如果使用INSERT IGNORE并且忽略了该行，则AUTO_INCREMENT计数器不会递增，LAST_INSERT_ID（）返回0，这反...
调用GetAutoIncrementUsageStatistic接口,获取表自增ID的使用数据。 接口说明 本接口只适用于 RDS MySQL 和 PolarDB MySQL 版实例。 使用阿里云或 DAS 的 SDK 时,建议使用最新版本。 在使用 SDK 调用 DAS 服务时,需要将地域指定为 cn-shanghai。 调试 您可以在OpenAPI Explorer中直接运行该接口,免去您计算签名的困...
mysql> insert into t5 values('abcd'); ERROR 1406 (22001): Data too long for column 'c1' at row 1 1. 2. 经常使用的sql_mode值: 如果把sql_mode的值设置成后面的两个值(也就是我们说的严格模式),那么当在列中插入或更新不正确的值时,mysql将会给出错误,并且放弃insert/update操作。在我们的一般...
xjk key: NULL key_len: NULL ref: NULL rows: 64000 filtered: 0.00 Extra: Using whereHow to repeat:create table foo (i int primary key auto_increment, j int, k int, l int) engine=heap; insert into foo values (null,0,0,0),(null,0,0,0),(null,0,0,0),(null,0,0,0),(null...
It doesn't crash for me with 5.1. mysql> CREATE TABLE t1 (pk INTEGER AUTO_INCREMENT, PRIMARY KEY (pk)) ENGINE = InnoDB; Query OK, 0 rows affected (0.05 sec) mysql> INSERT INTO t1 VALUES (NULL) , ('-685113344') , (NULL) ; ERROR 1467 (HY000): Failed to read auto-increment valu...
If you really need the next auto increment id, then you should strongly reconsider the way you have designed your application. You should just do the insert and let the id be whatever the database server assigns to it. After the insert you can get the id generated via mysql_...
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in, I'd like to be able to send a single query and retrieve the id, either inserting a record if it doesn't exist, updating logins if it exists, or in some cases (for similar tables) just select(id) if it exists, or insert (and get the auto_increment id) if it doesn't exist...