Varray « Collections « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Collections » Varray

26. 2. Varray
	26. 2. 1.	Creating a Varray Type
	26. 2. 2.	Using VARRAYs
	26. 2. 3.	Getting Information on Varrays
	26. 2. 4.	VARRAY in action
	26. 2. 5.	Inside the loop, you are accessing array elements by their subscripts.
	26. 2. 6.	Assign value to VARRAY
	26. 2. 7.	Defining our type to be a VARRAY with 10 elements, where each element is a varying character string of up to 15 characters.
	26. 2. 8.	CREATE TABLE with a VARRAY
	26. 2. 9.	Loading a Table with a VARRAY in It: INSERT VALUEs with Constants
	26. 2. 10.	Query VARRAY column
	26. 2. 11.	Query table with VARRAY type column by column name
	26. 2. 12.	Manipulating the VARRAY with The TABLE Function
	26. 2. 13.	If aliases are used, they must be used consistently
	26. 2. 14.	Manipulating the VARRAY with The VARRAY Self-join
	26. 2. 15.	VARRAY of Cursor
	26. 2. 16.	The COUNT Function
	26. 2. 17.	LAST and COUNT give the same result for VARRAYs.
	26. 2. 18.	A procedure that uses EXISTS and LAST
	26. 2. 19.	EXISTS and LAST
	26. 2. 20.	Using PL/SQL to Create Functions to Access Elements
	26. 2. 21.	The CAST function converts an object type (such as a VARRAY) into a common type that can be queried. Oracle 10g automatically converts the VARRAY without the CAST.
	26. 2. 22.	One way to make the 'members' behave like an array is first to include the row number in the result set like this:
	26. 2. 23.	Then, the individual array element can be extracted with a WHERE filter:
	26. 2. 24.	Extracting individual members of a VARRAY may be accomplished using two other functions: THE and VALUE
	26. 2. 25.	Column_value is a built-in function/pseudo-variable that is held over from the DBMS_SQL package
	26. 2. 26.	Loop through by using the built-in NEXT, PRIOR.
	26. 2. 27.	The subscript of the last element is always equal to the size of the array.
	26. 2. 28.	Decreasing the Size of an Array

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