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Sonata Interview Questions

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What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNION statement eliminates duplicate rows; a UNION ALL statement includes duplicate rows. 2. A UNION statement can be used to combine any number of queries; a UNION ALL statement can be used to combine a maximum of two queries. 3. A UNION statement can only combine queries that have parallel fields in the SELECT list; a UNION ALL statement can combine queries with differing SELECT list structures. 4. A UNION statement cannot be used with aggregate functions; a UNION ALL statement can be used with aggregate functions. 5. There is no difference between the two statements; they are interchangeable.

2 8821

1 SELECT a.field1, b.field2, c.field3, d.field4 2 FROM atable a, atable b, ctable c, dtable d 3 ? 4 ORDER BY 1 What is the minimum number of joins that must be specified on line 3 in the sample code above to properly link the tables? Notice that the table "atable" is aliased twice: once as "a" and once as "b." 1. One join 2. Two joins 3. Three joins 4. Four joins 5. Five joins

6 10455

SELECT flavor, SUM (ice_cream_sales) FROM sales_detail GROUP BY flavor ORDER BY 2 DESC If the "sales_detail" table contains ten records with different values in the flavor column (two "vanilla," three "chocolate," four "strawberry," and one NULL), how many rows are returned by the sample code above? 1. 0 rows 2. 1 row 3. 3 rows 4. 4 rows 5. 10 rows

8 12659

Which one of the following is a reason that an INSERT statement might cause an error instead of executing correctly? 1. The INSERT statement was attempting to insert a record into a view that was created from more than one table. 2. The INSERT statement was attempting to insert a record using a combination of constants and values from an existing table. 3. The INSERT statement was attempting to insert a record with a non-NULL value into a table that has that column defined as NULL. 4. The INSERT statement was attempting to insert a record into a table by selecting a record from that same table. 5. The INSERT statement was attempting to insert a record into a view rather than a table.

1 6714

what load_dll in winrunner

2 6101

What is Smoke testing,in smoke testing time u will prepare the test cases or not?

10 13864

In real time where u can apply traceability matrix

5 11143

what is diff between stress & load testing

8 11325

When a new build comes what is the first step taken by a tester in testing

1 3961

what is the difference between verification and validation

2858

what is test strategy

1962

What a test plan contains

2050

what is the use of testing? is testing compulsary

16 26384

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Un-Answered Questions

What are the pre-defined functions in the sql server?

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How many ways take thread dumps?

1014

What do you understand with an activity in android?

936

How to make a module?

141

Types of errors in account

1602

How to list all stored procedures in the current database using ms sql server?

1132

Tell me something about google?

816

What is anonymous method in c#?

901

Is there an equivalent to the instanceof operator in visual j++?

969

What is overriding in python?

899

Is the rtx 2070 better than the gtx 1080?

What is augmented human intelligence?

906

When do you use list vs. tuple vs. dictionary vs. set?

862

How to create a user in openstack?

264

Write a factorial program using C.

1082