Use the Literal Collection segment to specify values for a collection data type. For the syntax of expressions that return values of individual elements within a collection, see Collection Constructors.
Literal Collection: |--+-"--+-SET------+--{-| Literal Data |-}."-+------------------| | +-MULTISET-+ | | '-LIST-----' | '-'--+-SET------+--{-| Literal Data |-}.'-' +-MULTISET-+ '-LIST-----' Literal Data: .-,--------------------------------------------------------------------------------------------. V (1) | |----+-| Element Literal Value |----------------------------------------------------------------+-+--| | (2) (2) | '-| Nested Quotation Marks |-------| Literal Collection |--| Nested Quotation Marks |------'
You can specify literal collection values for SET, MULTISET, or LIST data types.
To specify a single literal-collection value, specify the collection type and the literal values. The following SQL statement inserts four integer values into a column called set_col that was declared as SET(INT NOT NULL):
INSERT INTO table1 (set_col) VALUES ('SET{6, 9, 9, 4}');
Specify an empty collection with an empty pair of braces ( { } ) symbols. This example inserts an empty list into a column list_col that was declared as LIST(INT NOT NULL):
INSERT INTO table2 (list_col) VALUES ('LIST{}')
A pair of single ( ' ) or double ( " ) quotes must delimit the collection. In databases where delimited identifiers are enabled, however, double quotes are not valid, except to delimit SQL identifiers.
If you are passing a literal collection as an argument to an SPL routine, make sure that there is a blank space between the parentheses that surround the arguments and the quotation marks that indicate the beginning and end of the literal collection.
If you specify a collection as a literal value in a row-string literal, you can omit the quotation marks around the collection itself. Only the outermost quotation marks that delimit the row-string literal are necessary. No quotation marks need surround the nested collection type. For an example, see Literals for Nested Rows.
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