Which two statements are true about WHERE and HAVING clauses? () A WHERE clause can be used to restrict both rows and groups.。 A WHERE clause can be used to restrict rows only.。 A HAVING clause can be used to restrict both rows and groups.。 A HAVING clause can be used to restrict groups only.。 A WHERE clause CANNOT be used in a query of the query uses a HAVING clause.。 A HAVING clause CANNOT be used in subqueries.。
【背景资料】某工业厂房车间3层,7度抗震设防。高度20m,长度为70m,独立基础,结构形式为砌体承重结构。在建成使用几个月后发现底层局部地面呈锅底形下沉,砼地面脱落、开裂,后来又发生墙体开裂,裂缝呈正八字裂缝和斜向裂缝,裂缝宽度达1mm~2mm,一般分布在底层中下部,且首先在窗对角突破,严重影响了建筑物的使用和工厂面貌,给工厂造成了重大的经济损失。经翻阅资料发现,该仓房实际上处于软弱土层,且为淤泥质土,地勘报告不准确;最终认定是由于地面不均匀沉降造成的危害
当地基承载力和变形不能满足设计要求时,应将地基进行人工处理。
You find that the execution time of reports in your datawarehouse application is significantly high. You suspect the lack of indexes to be the reason for the degradation in performance. Which advisory component would you refer to, in order to determine the appropriate indexes?() Memory Advisor。 Segment Advisor。 SQL Access Advisor。 Automatic Workload Repository (AWR)。 Automatic Database Diagnostic Monitor (ADDM)。
城市产生的原因有哪几种学说?
水电工程施工项目实行“()”的质量责任机制。 项目法人负责。 承包人保证。 监理单位控制。 运行单位接收。 政府机构监督。
扣缴义务人采取前款所列手段,不缴或者少缴已扣、已收税款,由税务机关追缴其不缴或者少缴的税款、滞纳金,并处不缴或者少缴的税款()的罚款。