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This chapter explains how to create and use PL/SQL collection and record variables.

Result of all the 3 queries is same: SELECT DATENAME(month, getdate()) AS 'This is month' SELECT DATENAME(mm, getdate()) AS 'This is month' SELECT DATENAME(m, getdate()) AS 'This is month' Result: This is month July DATENAME Example 4 Below queries find current quarter.

Result of all the 3 queries is same: SELECT DATENAME(quarter, getdate()) AS 'This is quarter' SELECT DATENAME(q, getdate()) AS 'This is quarter' SELECT DATENAME(qq, getdate()) AS 'This is quarter' Result: This is quarter 3 DATENAME Example 5 Below queries find current year.

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This DATENAME() function returns a character string that represents a part of a given date and time value.

SQL Like a database table, an associative array holds a data set of arbitrary size, and you can access its elements without knowing their positions in the array.

An associative array does not need the disk space or network operations of a database table, but an associative array cannot be manipulated by SQL statements (such as ).

When you declare an associative array that is indexed by strings, the string type in the declaration must be When you pass an associative array as a parameter to a remote database using a database link, the two databases can have different globalization settings.

When the remote database uses a collection method such as , it uses its own character order, which might be different from the order where the collection originated.

By using a noname PL/SQL block, this can be achieved. If anyone has a solution to use it in a SELECT Command, I would be interested. For example, if my table T has one column c1 which contains "1" as value for all and now I update all rows for that column to "2", how will partitioning by null help?

I think that Ali H's point is that it's not necessary to assign it to a variable until you have another SQL statement that would affect the row count.

Using the same key with a different value changes the value.

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