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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.

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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

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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

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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 6769

what load_dll in winrunner

2 6190

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

10 14173

In real time where u can apply traceability matrix

5 11273

what is diff between stress & load testing

8 11544

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

1 4027

what is the difference between verification and validation

2913

what is test strategy

2043

What a test plan contains

2098

what is the use of testing? is testing compulsary

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Un-Answered Questions

How many chart of accounts can a company code have?

1106

What is rollup and cube?

Define Product attributes?

1173

What is servlet invoker?

1084

How many typefaces are there?

695

What do you mean by viewresolver in spring?

474

Define Enterprise Networks

1237

why is the context switch overhead of a user-level threading as compared to the overhead for processes? Explain.

1152

What is the Working principle of Dozing valve?

2257

What skills are required for data analytics roles?

424

What is sap bw/bi? What is the purpose of sap bw/bi?

921

Do I need to turn on track changes to add comments to my document in ms word?

651

WHAT IS LIMITED REVIEW? WHY IT IS REQUIRE?

2255

What is serialization in php?

1018

When should you increase copy latches? What parameters control copy latches?

603