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Which two statements are true regarding partitioning in Mysql?（）
- A、Tables with BLOB and TEXT columns cannot be partitioned
- B、Partitioning allows easier management of smaller data sets for certain queries
- C、Partitioning allows different columns to be stored in separate files
- D、The partitioning expression is an integer or function that returns an integer value or NULL value
- E、Partitioning is only available for those storage engines that implements it natively
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更多 “Which two statements are true regarding partitioning in Mysql?（）A、Tables with BLOB and TEXT columns cannot be partitionedB、Partitioning allows easier management of smaller data sets for certain queriesC、Partitioning allows different columns to be stored in separate filesD、The partitioning expression is an integer or function that returns an integer value or NULL valueE、Partitioning is only available for those storage engines that implements it natively” 相关考题
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Which two statements are true regarding partitioning in Mysql?()
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Which statements are true regarding system-partitioned tables？（） A、 Only a single partitioning key column can be specified.B、 All DML statements must use partition-extended syntax.C、 The same physical attributes must be specified for each partition.D、 Unique local indexes cannot be created on a system-partitioned table.E、 Traditional partition pruning and partitionwise joins are not supported on these tables.
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Which two statements are true regarding the USING and ON clauses in table joins?（）A、Both USING and ON clauses can be used for equijoins and nonequijoins B、Amaximum of one pair of columns can be joined between two tables using the ON clause C、The ON clause can be used to join tables on columns that have different names but compatible data types D、The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause
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What is true about the WITH GRANT OPTION clause?（）A、It allows a grantee DBA privileges.B、It is required syntax for object privileges.C、It allows privileges on specified columns of tables.D、It is used to grant an object privilege on a foreign key column.E、It allows the grantee to grant object privileges to other users and roles.
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What two statements are true regarding the recommendations received from the SQL Access Advisor？（）A、 It cannot generate recommendations that support multiple workload queries.B、 It can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.C、 It can recommend partitioning only on tables that have at least 10，000 rows.D、 It can recommend only B-tree indexes and not bitmap or function-based indexes.
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单选题In which cases is reference partitioning effective in enhancing performance?（）A
It is effective only in partition pruning.B
It is effective only in partitionwise joins provided that the query predicates are different from the partitioning key.C
It is effective in both partition pruning as well as partitionwise joins provided that the query predicates are identical to the partitioning key.D
It is effective in both partition pruning as well as partitionwise joins irrespective of whether the query predicates are different from or identical to the partitioning key.
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多选题What two statements are true regarding the recommendations received from the SQL Access Advisor?（）(Choose two.)AIt cannot generate recommendations that support multiple workload queries.BIt can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.CIt can recommend partitioning only on tables that have at least 10,000 rows.DIt can recommend only B-tree indexes and not bitmap or function-based indexes
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多选题Which two statements are true regarding the USING clause in table joins?（）AIt can be used to join a maximum of three tablesBIt can be used to restrict the number of columns used in a NATURAL joinCIt can be used to access data from tables through equijoins as well as nonequijoinsDIt can be used to join tables that have columns with the same name and compatible data types
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多选题What two statements are true regarding the recommendations received from the SQL Access Advisor？（）AIt cannot generate recommendations that support multiple workload queries.BIt can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.CIt can recommend partitioning only on tables that have at least 10，000 rows.DIt can recommend only B-tree indexes and not bitmap or function-based indexes.
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多选题Which two statements are true regarding the USING and ON clauses in table joins?（）ABoth USING and ON clauses can be used for equijoins and nonequijoinsBAmaximum of one pair of columns can be joined between two tables using the ON clauseCThe ON clause can be used to join tables on columns that have different names but compatible data typesDThe WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause
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多选题Which two statements are true regarding partitioning in Mysql?（）ATables with BLOB and TEXT columns cannot be partitionedBPartitioning allows easier management of smaller data sets for certain queriesCPartitioning allows different columns to be stored in separate filesDThe partitioning expression is an integer or function that returns an integer value or NULL valueEPartitioning is only available for those storage engines that implements it natively
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多选题Which two statements regarding a SQL profile are true？（）AIt is built by Automatic Tuning Optimizer.BIt cannot be stored persistently in the data dictionary.CIt can be used by the query optimizer automatically.DIt can be created manually by using the CREATE PROFILE command.
考题
单选题Which statement is true regarding the INTERSECT operator?（）A
It ignores NULL values B
Reversing the order of the intersected tables alters the result C
The names of columns in all SELECT statements must be identical D
The number of columns and data types must be identical for all SELECT statements in the query
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多选题Which two statements are true regarding views?（）AA subquery that defines a view cannot include the GROUP BY clauseBA view that is created with the subquery having the DISTINCT keyword can be updatedCA view that is created with the subquery having the pseudo column ROWNUM keyword cannot be updatedDA data manipulation language (DML) operation can be performed on a view that is created with the subquery having all the NOT NULL columns of a table
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