SQL ARRAY: Difference between revisions
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Revision as of 23:32, 24 May 2024
Internal
Overview
Declaration
SQL declaration for unidimensional arrays:
CREATE TABLE some_table (
some_column text ARRAY
...
)
ARRAY
can be declared for any data types.
Insert
INSERT INTO some_table (some_column, ...) VALUES (ARRAY['string1', 'string2', ...], ...)
Search in an Array
SELECT some_column FROM some_table WHERE 'value_we_search_for' = ANY(some_table.some_column)
some_column
must be a text ARRAY
type. The expression above evaluates to TRUE if 'value_we_search_for' is in any of the array elements.
⚠️ The inclusion test must start with the value, it cannot start with ANY()
. The following expression will produce a syntax error:
... WHERE ANY(some_table.some_column) = 'value_we_search_for'
Implementation-Specific Details
PostgreSQL MySQL