How many sql commands are there?

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What is the purpose of the primary key?

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What do you understand by pl/sql packages?

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Where can I learn sql for free?

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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

8 Answers   Sonata,

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Is pl sql a programming language?

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What is information schema in sql?

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How to use sql statements in pl/sql?

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i have table T!. A B C D NULL 1 2 3 4 NULL 5 6 7 8 NULL 9 10 11 12 NULL. I WANT COUNT OF NULL VALUES IN TABLE. WRITE A QUERY.

14 Answers   iGate, Wipro,

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What are different joins used in sql?

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How do I create a sql database?

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How to write html code in pl sql?

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