sql 执行 错误

执行这样的sql

alter table pj_usr_auth add constraint FK_Reference_8 foreign key (usr) references usr (usr) on delete restrict on update restrict;

错误

2016-03-29 21:04:42,423 [ERROR][com.alibaba.druid.filter.stat.StatFilter] - merge sql error, dbType mysql, sql : alter table pj_usr_auth add constraint FK_Reference_8 foreign key (usr) references usr (usr) on delete restrict on update restrict; com.alibaba.druid.sql.parser.ParserException: syntax error, error in :'rict on update restrict;',expect ON, actual ON on at com.alibaba.druid.sql.parser.SQLParser.printError(SQLParser.java:231) at com.alibaba.druid.sql.parser.SQLStatementParser.parseStatementList(SQLStatementParser.java:407) at com.alibaba.druid.sql.parser.SQLStatementParser.parseStatementList(SQLStatementParser.java:145) at com.alibaba.druid.sql.parser.SQLStatementParser.parseStatementList(SQLStatementParser.java:140) at com.alibaba.druid.sql.visitor.ParameterizedOutputVisitorUtils.parameterize(ParameterizedOutputVisitorUtils.java:53) at com.alibaba.druid.filter.stat.StatFilter.mergeSql(StatFilter.java:145) at com.alibaba.druid.filter.stat.StatFilter.createSqlStat(StatFilter.java:630) at com.alibaba.druid.filter.stat.StatFilter.internalBeforeStatementExecute(StatFilter.java:397) at com.alibaba.druid.filter.stat.StatFilter.statementExecuteBefore(StatFilter.java:345) at com.alibaba.druid.filter.FilterEventAdapter.statement_execute(FilterEventAdapter.java:185) at com.alibaba.druid.filter.FilterChainImpl.statement_execute(FilterChainImpl.java:2487) at com.alibaba.druid.proxy.jdbc.StatementProxyImpl.execute(StatementProxyImpl.java:137) at com.alibaba.druid.pool.DruidPooledStatement.execute(DruidPooledStatement.java:421) at org.nutz.dao.impl.sql.run.NutDaoExecutor._runStatement(NutDaoExecutor.java:321) at org.nutz.dao.impl.sql.run.NutDaoExecutor.exec(NutDaoExecutor.java:52) at org.nutz.plugins.cache.dao.CachedNutDaoExecutor.exec(CachedNutDaoExecutor.java:105) at org.nutz.dao.impl.DaoSupport$DaoExec.invoke(DaoSupport.java:316) at org.nutz.dao.impl.sql.run.NutDaoRunner.run(NutDaoRunner.java:59) at org.nutz.dao.impl.DaoSupport.run(DaoSupport.java:239) at org.nutz.dao.impl.DaoSupport._exec(DaoSupport.java:271) at org.nutz.dao.impl.DaoSupport.execute(DaoSupport.java:235) at com.rekoe.MvcSetup.init(MvcSetup.java:79) at org.nutz.mvc.impl.NutLoading.evalSetup(NutLoading.java:276) at org.nutz.mvc.impl.NutLoading.load(NutLoading.java:120) at org.nutz.mvc.ActionHandler.(ActionHandler.java:19) at org.nutz.mvc.NutFilter._init(NutFilter.java:87) at org.nutz.mvc.NutFilter.init(NutFilter.java:65) at com.rekoe.mvc.RkCmsNutFilter.init(RkCmsNutFilter.java:22) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382) at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:103) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4650) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5306) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) 2016-03-29 21:04:42,669 [ERROR][com.alibaba.druid.pool.DruidDataSource] - discard connection

原提问者GitHub用户Rekoe