there can be only one auto column and it must be defined as a key原因以及解决办法

文章目录

现状
原因
解决

转载请标明出处：
https://bigmaning.blog.csdn.net/article/details/124448508
本文出自:【BigManing的博客】

现状

新建表时出错：

-- 教师表
create table Teacher(
tid int not null   auto_increment,
tname varchar(10)
);

报错如下：

org.jkiss.dbeaver.model.sql.DBSQLException: SQL 错误 [1075] [42000]: Incorrect table definition; there can be only one auto column and it must be defined as a keyat org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:135)at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeStatement(SQLQueryJob.java:492)at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.lambda$0(SQLQueryJob.java:427)at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:170)at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.executeSingleQuery(SQLQueryJob.java:419)at org.jkiss.dbeaver.ui.editors.sql.execute.SQLQueryJob.extractData(SQLQueryJob.java:779)at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.readData(SQLEditor.java:2966)at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.lambda$0(ResultSetJobDataRead.java:111)at org.jkiss.dbeaver.model.exec.DBExecUtils.tryExecuteRecover(DBExecUtils.java:170)at org.jkiss.dbeaver.ui.controls.resultset.ResultSetJobDataRead.run(ResultSetJobDataRead.java:109)at org.jkiss.dbeaver.ui.controls.resultset.ResultSetViewer$17.run(ResultSetViewer.java:3582)at org.jkiss.dbeaver.model.runtime.AbstractJob.run(AbstractJob.java:103)at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: java.sql.SQLSyntaxErrorException: Incorrect table definition; there can be only one auto column and it must be defined as a keyat com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120)at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)at com.mysql.cj.jdbc.StatementImpl.executeInternal(StatementImpl.java:763)at com.mysql.cj.jdbc.StatementImpl.execute(StatementImpl.java:648)at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.execute(JDBCStatementImpl.java:342)at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCStatementImpl.executeStatement(JDBCStatementImpl.java:132)... 12 more

原因

auto_increment 修饰的字段必须是主键

解决

给自增字段添加primary key

-- 教师表
create table Teacher(
tid int not null primary key  auto_increment,
tname varchar(10)
);

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there can be only one auto column and it must be defined as a key原因以及解决办法

文章目录

现状

原因

解决

there can be only one auto column and it must be defined as a key原因以及解决办法相关推荐

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