單項(xiàng)選擇題

Consider the following statement on a RANGE partitioned table: ALTER TABLE orders DROP PARTITION p1, p3;
What is the outcome of executing the above statement?（）

A.A syntax error will result as you cannot specify more than one partition in the same statement
B.All data in p1 and p3 partitions are removed and the table definition is changed
C.All data in p1 and p3 partitions are removed, but the table definition remains unchanged
D.Only the first partition (p1) will be dropped as only one can be dropped at any time

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單項(xiàng)選擇題

A simple master-to-slave replication is currently being used. The following information is extracted from the SHOW SLAVE STATUS output:
Last_SQL_Error: Error 'Duplicate entry '8' for key 'PRIMARY' ' on query.
Default database: 'mydb'. Query: 'insert into mytable VALUES ('8' , 'George') ' Skip_Counter: 0 Retrieved _Gtid_Set: 38f32e23480a7-32a1-c323f78067fd37821: 1-8 Auto _Position: 1
You execute a "SHOW CREATE TABLE mytable" on the slave: CREATE TABLE 'mytable' ( 'ID' int(11) NOT NULL
DEFAULT '0', 'name' char(10) DEFAULT NULL, PRIMARY KEY ('ID') )
The table mytable on the slave contains the following:

You have issued a STOP SLAVE command. One or more statements are required before you can issue a START SLAVE command to resolve the duplicate key error. Which statement should be used（）

A.SET GTID_NEXT="CONSISTENCY"; BEGIN; COMMIT; SET GTID_NEXT="AUTOMATIC"
B.SET GLOBAL enforce_gtid_consistency=ON
C.SET GTID_EXECUTED="38f32e23480a7-32a1-c323f78067fd37821 : 9"
D.SET GTID_NEXT="38f32e23480a7-32a1-c323f78067fd37821 : 9"; BEGIN; COMMIT; SET GTID_NEXT="AUTOMATIC"
E.SET GLOBAL SQL_SKIP_SLAVE_COUNTER=1

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Consider the following statement on a RANGE partitioned table: ALTER TABLE orders DROP PARTITION p1, p3; What is the outcome of executing the above statement?（）

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Consider the following statement on a RANGE partitioned table: ALTER TABLE orders DROP PARTITION p1, p3;
What is the outcome of executing the above statement?（）