What is before and after trigger?

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What is the differnce between view and materialized view

4 Answers   TCS,

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type type_name is table of varchar2(30) index by binary_integer for the above type you have to create a identifier... like identifier_name type_name; for the above type you can use the below methods..like first , last , prior, next , delege..etc...like this.. if you create a cursor...like cursor cursor_name is select * from scott.emp; is there any methods like above to use prior, fist , last , next , trim ,etc...

1 Answers   Satyam,

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SELECT category, type, AVG(price) FROM products GROUP BY category, type ORDER BY 1, 2 If there are three distinct categories in the "products" table, and each one has five different types, how many rows are returned by the query above? 1. 1 row 2. 3 rows 3. 5 rows 4. 8 rows 5. 15 rows

3 Answers  

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Can we rename a column in the output of sql query?

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define data blocks ? : Sql dba

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What is the process of copying data from table a to table b?

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how will i became good database developer?

1 Answers  

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Is a view faster than a stored procedure?

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table :- city name country code abc 11 bcd 22 cde 232 def 33 write a procedure , so that when we give a phone no. eg - 1123456789 - o/p sud be city name = abc if phone no. - 2322345897 , o/p sud be =cde note - bcd and cde city name sud be diff. as dey diff only with th last no. Pls ans. this questnion.

1 Answers  

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Can we declare a column having number data type and its scale is larger than pricesionex: column_name number(10,100),column_name numbaer(10,-84)

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what is the difference between union and union all? : Sql dba

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