[CALCITE-5744] Add MAP_FROM_ARRAYS, STR_TO_MAP for Spark dialect

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.35.0
• Fix Version/s: 1.35.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Jacky Lau
• Created: 02/Jun/23 11:16
• Updated: 27/Jul/23 10:22
• Resolved: 26/Jun/23 05:52

Description

MAP_FROM_ARRAYS (array1, array2)

• Returns a map created from an array1 and *array2. Note that the lengths of two arrays should be the same

// code placeholder
> SELECT map_from_arrays(array(1.0, 3.0), array('2', '4'));
 {1.0:"2",3.0:"4"} 

 

 

STR_TO_MAP(string[, stringDelimiter[, keyValueDelimiter]])

• Returns a map after splitting the string into key/value pairs using delimiters. Default delimiters are ',' for stringDelimiter and ':' for keyValueDelimiter Both pairDelim and keyValueDelim are treated as regular expressions.

Examples:

> SELECT str_to_map('a:1,b:2,c:3', ',', ':');

- {"a":"1","b":"2","c":"3"}

> SELECT str_to_map('a');
 {"a":null} 

 

Issue Links

• is a parent of: CALCITE-5739 Add MAP_FROM_ARRAYS for Spark dialect
• links to: GitHub Pull Request #3238