How to split string in postgresql?

@larissa 

In PostgreSQL, you can split a string using the string_to_array function. Here's an example of how to split a string into an array:

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SELECT string_to_array('hello world', ' ');

This will return an array with two elements: 'hello' and 'world'.

If you want to split a string based on a different delimiter, you can change the second argument in the string_to_array function. For example, to split a string using a comma as the delimiter, you can do:

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SELECT string_to_array('apple,banana,orange', ',');

This will return an array with three elements: 'apple', 'banana', and 'orange'.