Evaluatethefollowingcode:SQLVARIABLEtask_nameVARCHAR2(255);SQLVARIABLEsql_stmtVARCHAR2(4000);SQLBEGIN:sql_stmt:=’SELECTCOUNT(*)FROMcustomersWHEREcust_state_province=’’CA’’’;:task_name:=’MY_QUICKTUNE_TASK’;DBMS_ADVISOR.QUICK_TUNE(DBMS_ADVISOR.SQLACCESS_ADVISOR,:task_name,:sql_stmt);END;Whatistheoutcomeofthisblockofcode?()A.Itcreatesataskandworkload,andexecutesthetask.B.Itcreatesataskandworkloadbutdoesnotexecutethetask.C.Itproducesanerrorbecauseatemplatehasnotbeencreated.D.ItproducesanerrorbecausetheSQLTuningSethasnotbeencreated.
Evaluatethefollowingcode:SQL>VARIABLEtask_nameVARCHAR2(255);SQL>VARIABLEsql_stmtVARCHAR2(4000);SQL>BEGIN:sql_stmt:=’SELECTCOUNT(*)FROMcustomersWHEREcust_state_province=’’CA’’’;:task_name:=’MY_QUICKTUNE_TASK’;DBMS_ADVISOR.QUICK_TUNE(DBMS_ADVISOR.SQLACCESS_ADVISOR,:task_name,:sql_stmt);END;Whatistheoutcomeofthisblockofcode?()
A.Itcreatesataskandworkload,andexecutesthetask.
B.Itcreatesataskandworkloadbutdoesnotexecutethetask.
C.Itproducesanerrorbecauseatemplatehasnotbeencreated.
D.ItproducesanerrorbecausetheSQLTuningSethasnotbeencreated.
相关考题:
5、下面的哪一种颜色表示最接近黑色?A.t.colormode(255) t.fillcolor(0, 100, 100)B.t.colormode(255) t.fillcolor(100, 100, 100)C.t.colormode(255) t.fillcolor(200, 200, 200)D.t.colormode(255) t.fillcolor(255, 255, 255)
如果执行以下代码,会输出什么值: from traits.api import HasTraits, Color class Circle(HasTraits): color = Color c = Circle() c.color = 'blue' print(c.color.getRgb())A.(255,0,0,255)B.(0,255,0,255)C.(0,0,255,255)D.(255,255,255,255)