ORA-00937: not a single-group group function (2) 求每个部门的平均薪水 SQL> select department_id,avg(salary) from employees group by department_id; (3) 显示在每个部门中付给每个工作岗位的合计薪水的报告。 SQL> select department_id,job_id,sum(salary) from employees group by department_id,job_...
必须包含于 GROUP BY 子句中 -- 错误的示例代码SELECTdepartment_id,COUNT(last_name)FROMemployees-- SELECT department_id, COUNT(last_name)-- *-- ERROR at line 1:-- ORA-00937: not a single-group group function 不能在 WHERE 子句中使用组函数。 可以在 HAVING 子句中使用组函数。 -- 错误的示例...
ORA-00937: not a single-group group function --使用having子句过滤分组结果 --查询平均工资高于的部门号,及其平均工资。 select deptno,avg(sal) from emp group by deptno having avg(sal)>2000; idle> select deptno,avg(sal) from emp group by deptno having avg(sal)>2000; DEPTNO AVG(SAL) --- ...
ORA-00937: not a single-group group function 理论很简单,如果不GROUP BY TITLE,显示哪一个呢?这个在试题中经常出现。 结论:不加分组函数修饰的列必定要出现在GROUP BY 里。 错误实例: SQL> SELECT dept_id, AVG(salary) 2 FROM s_emp 3 WHERE AVG(salary) > 2000 4 GROUP BY dept_id; WHERE AVG(...
EXEC sp_execute_external_script @language = N'Python' , @script = N' OutputDataSet = InputDataSet' , @input_data_1 = N'select 1' , @input_data_1_name = N'InputDataSet' , @output_data_1_name = N'OutputDataSet' WITH RESULT SETS (([output] ...
NonParallelizableIntrinsicFunction 查询引用不可并行的内部函数。 CLRUserDefinedFunctionRequiresDataAccess 需要数据访问的 CLR UDF 不支持并行。 TSQLUserDefinedFunctionsNotParallelizable 查询引用不可并行的 T-SQL 用户定义函数。 TableVariableTransactionsDoNotSupportParallelNestedTransaction 表变量事务不支持并行嵌套事务...
COLUMN_ON_SINGLE_FIELD_SCHEMA、DELTA_INCORRECT_LOG_STORE_IMPLEMENTATION、DELTA_MISSING_PROVIDER_FOR_CONVERT、DELTA_MODE_NOT_SUPPORTED、DELTA_NESTED_NOT_NULL_CONSTRAINT、DELTA_NON_DETERMINISTIC_FUNCTION_NOT_SUPPORTED、DELTA_OPERATION_NOT_ALLOWED、DELTA_OPERATION_NOT_ALLOWED_DETAIL、DELTA_OPERATION_NOT_...
A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The semaphore timeout period has expired.) A USE database statement is not allowed in a procedure, function or trigger. A week this year Against a week this time last year in...
SQL does not consolidate duplicate groups generated for a GROUPING SETS list. For example, in GROUP BY ( (), CUBE (Country, Region) ), both elements return a row for the grand total and both rows will be listed in the results. GROUP BY () Specifies the empty group, which generates th...
解决方法:GROUP BY中避免非精确数据类型,如FLOAT等,建议使用精确的数据类型。 报错:CREATE TABLE is not supported for current instance 问题原因:当前实例是共享集群(实例Endpoint以hgmc开头,如hgmc-cn-xxwwwkkk,可前往Hologres管控台查看实例Endpoint)或者从实例,共享集群不支持创建内部表,只能创建外部表,从实例只能查...