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全部博文（487）
发布时间：2019-11-19 09:16:19
Examine the data in the CUST NAME column of the CUSTOMERS table:------------------------------Jason MallinAllan MCEwenJulia NayerWhich two WHERE clauses give the required result?B) WHERE UPPER (SUBSTR(cust_nane, INSTR(cust_name, ' ') +1 ) ) LIKE UPPER('MC%')D) WHERE SUB.........【阅读全文】
发布时间：2019-11-18 15:01:27
Evalute these conmands which execate sucestullyINCREMENT BY 1MAXVALUE 100000CACHE 5000;A) Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ.C) Sepuence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 timesE) Se.........【阅读全文】
发布时间：2019-11-18 14:36:48
·MANAGER is an existing role with no privileges or roles.·EMPLOYEES is an existing table in the HR schema.A) GRANT CREATE SEQUENCE TO manager, emp;C) GRANT CREATE TABLE, emp TO manager;E) GRANT CREATE ANY SESSION, CREATE ANY TABLE TO manager;(解析：DAnswer：：不能同时授权.........【阅读全文】
发布时间：2019-11-14 14:27:26
The ORDERS table has a column ORDER_DATE of date type DATEWhich two WHERE conditions demonstrate the correct usage of conversion functions?B) WHERE TO_CHAR(order_date, 'MON DD YYYY') = 'JAN 20 2019'D) WHERE order_date IN (TO_DATE ('Oct 21 2018', 'MON DD YYYY'), TO_CHAR('Nov 21 2018','M.........【阅读全文】
发布时间：2019-11-14 13:26:48
Which two statements are true about the DUAL table?B) It can be accessed only by the SYS user.D) It can display multiple rows but only a single column.F) It can be used to display only constants or pseudo columns.(解析：dual 这个虚拟的表可以显示多行多列;任何用户都可以访问它。这道题.........【阅读全文】
