### Cause: dm.jdbc.driver.DMException: 第 9 行, 第 85 列[is]附近出现错误: 语法分析出错

问题出现

 (case when pcf.CONTRACTS_DURATION_UNITS = ''|| pcf.CONTRACTS_DURATION_UNITS is null then null else 'M' end)
        contractsDurationUnits,
        (case  when pcf.CONTRACTS_DURATION_UNITS_NAME = ''|| pcf.CONTRACTS_DURATION_UNITS_NAME is null  then null else '月' end)
        contractsDurationUnitsName,

### Cause: dm.jdbc.driver.DMException: 第 9 行, 第 85 列[is]附近出现错误: 
语法分析出错
; bad SQL grammar []; nested exception is dm.jdbc.driver.DMException: 第 9 行, 第 85 列[is]附近出现错误: 
语法分析出错
	at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:99)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:82)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:82)
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	at com.sun.proxy.$Proxy134.selectList(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
	at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:139)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:76)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	at com.sun.proxy.$Proxy139.getHTZContractsList(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
	at com.sun.proxy.$Proxy140.getHTZContractsList(Unknown Source)
	at cn.chinaunicom.modular.hr.reportcore.service.ReportPersonCoreService.createReportMonthHtzPerson(ReportPersonCoreService.java:899)
	at cn.chinaunicom.modular.hr.reportcore.service.ReportPersonCoreService.createReportMonthPerson(ReportPersonCoreService.java:171)
	at cn.chinaunicom.modular.hr.reportcore.service.ReportPersonCoreService.createReportMonthAll(ReportPersonCoreService.java:75)
	at cn.chinaunicom.modular.hr.reportcore.service.ReportPersonCoreService$$FastClassBySpringCGLIB$$370f7d30.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	at org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:115)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.lang.Thread.run(Thread.java:748)
Caused by: dm.jdbc.driver.DMException: 第 9 行, 第 85 列[is]附近出现错误: 
语法分析出错
	at dm.jdbc.driver.DBError.throwException(DBError.java:657)
	at dm.jdbc.a.b.p.D(MSG.java:582)
	at dm.jdbc.a.b.p.A(MSG.java:542)
	at dm.jdbc.a.b.p.z(MSG.java:523)
	at dm.jdbc.a.a.a(DBAccess.java:795)
	at dm.jdbc.a.a.a(DBAccess.java:213)
	at dm.jdbc.driver.DmdbPreparedStatement.prepareSql(DmdbPreparedStatement.java:199)
	at dm.jdbc.driver.DmdbPreparedStatement.allocateHandle(DmdbPreparedStatement.java:168)
	at dm.jdbc.driver.DmdbPreparedStatement.<init>(DmdbPreparedStatement.java:120)
	at dm.jdbc.driver.DmdbPreparedStatement.<init>(DmdbPreparedStatement.java:135)
	at dm.jdbc.driver.DmdbConnection.do_prepareStatement(DmdbConnection.java:696)
	at dm.jdbc.driver.DmdbConnection.do_prepareStatement(DmdbConnection.java:682)
	at dm.jdbc.driver.DmdbConnection.prepareStatement(DmdbConnection.java:1280)
	at com.alibaba.druid.filter.FilterChainImpl.connection_prepareStatement(FilterChainImpl.java:572)
	at com.alibaba.druid.filter.FilterAdapter.connection_prepareStatement(FilterAdapter.java:930)
	at com.alibaba.druid.filter.FilterEventAdapter.connection_prepareStatement(FilterEventAdapter.java:122)
	at com.alibaba.druid.filter.FilterChainImpl.connection_prepareStatement(FilterChainImpl.java:568)
	at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.prepareStatement(ConnectionProxyImpl.java:341)
	at com.alibaba.druid.pool.DruidPooledConnection.prepareStatement(DruidPooledConnection.java:351)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.instantiateStatement(PreparedStatementHandler.java:87)
	at org.apache.ibatis.executor.statement.BaseStatementHandler.prepare(BaseStatementHandler.java:88)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.prepare(RoutingStatementHandler.java:59)
	at sun.reflect.GeneratedMethodAccessor195.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63)
	at com.sun.proxy.$Proxy307.prepare(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor195.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49)
	at com.baomidou.mybatisplus.plugins.PaginationInterceptor.intercept(PaginationInterceptor.java:108)
	at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61)
	at com.sun.proxy.$Proxy307.prepare(Unknown Source)
	at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:85)
	at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62)
	at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:326)
	at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
	at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:136)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
	at sun.reflect.GeneratedMethodAccessor198.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
	... 27 more

问题处理

在dm数据库中||代表的是连接符，例如

所以我们将||改成or就可以了