1z0-882 무료 덤프문제 온라인 액세스

Using the query:
SELECT Code FROM country WHERE Name = 'united states'
Which statement executed in the mysql client would create a prepared statement?

• A.PREPARE STATEMENT countrycode As 'SELECT code FROM country WHERE Name =?.;
• B.PREPARE STATEMENT countrycode FROM 'SELECT code FROM counyry WHERE Name =?.;
• C.PREPARE countrycode FROM 'SELECT code FROM country WHERE Name =?.;
• D.PREPARE countrycode As 'SELECT code FROM country WHERE Name =?.;

Which two keywords cannot be used in multi-table deletes?

• A.ORDER BY
• B.LIMIT
• C.USING
• D.IGNORE
• E.JOIN

Using the MYSQL command -line client you have received the error "Lost connection to MYSQL server query"
Which three are possible causes of the error?

• A.The MYSQL server stopped working during query execution.
• B.The network connection was interrupted during query execution.
• C.The client connection stayed idle for longer than interactive -timeout seconds and was closed.
• D.The server interrupted client connection after max-connect-errors was achieved.
• E.The connection that issued the query was killed.
• F.The client sent an erroneous query to the server causing the connection to be closed.

Consider the structure of the table countryLanguage and the distribution of the column Is official.
DESCRIBE CountryLanguage;

SELECT Isofficial, COUNT (Isofficial) FROM CountryLanguage GROUP BY Isofficial;

You add an index on the Isofficial column.
Which two statement are true?

• A.The speed of INSERT statements to this table will be unchanged.
• B.The optimizer will not choose the index on the Isofficial column.
• C.The optimizer will choose the index when Isofficial='F' is in the WHERE clause.
• D.The optimizer will choose the index when Isofficial='T' is in the WHERE clause.
• E.The speed of INSERT statements to this table will be reduced.
• F.The speed of INSERT statements to this table will be improved.

The city table has the following structure:

Consider the statement with an incorrect field name:
PREPARE countryBYID FROM 'SELECT country FROM city WHERE ID=?,
What happens if a prepared statement named countryByID already exists when the above statement is executed?

• A.An unknown column error will result and no prepared statement named countryByID will exist.
• B.A warning will result and the old prepared statement definition will remain in effect.
• C.An unknown column error will result and the old prepared statement definition will remain in effect.
• D.A duplicate name error will result because a prepared statement with the same name already exists.