[GitHub] [doris] xiaokang commented on a diff in pull request #17344: [feature](function) support type template in SQL function

[via GitHub]

xiaokang commented on code in PR #17344:
URL: https://github.com/apache/doris/pull/17344#discussion_r1125600558


##########
gensrc/script/doris_builtins_functions.py:
##########
@@ -100,7 +104,7 @@
     [['element_at', '%element_extract%'], 'STRING', ['ARRAY_STRING', 
'BIGINT'], 'ALWAYS_NULLABLE'],
 
     # map element
-    [['element_at', '%element_extract%'], 'INT', ['MAP_STRING_INT', 'STRING'], 
'ALWAYS_NULLABLE'],
+    [['element_at', '%element_extract%'], 'V', ['MAP<K, V>', 'K'], 
'ALWAYS_NULLABLE', ['K', 'V']],
 

Review Comment:
   yes, only one is need for each array function. You should add [‘K’] in the 
last entry to specify which types are template type, just like C++ template 
declaration.
   
   `[['array_sort'], 'ARRAY<K>',   ['ARRAY<K>'], '', ['K']]`



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