feat(functions): add map_insert function

[hanxuanliang]

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Summary

part of #15295

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[hanxuanliang]

However, there is such a description in Snowflake:

If updateFlag is set to TRUE, then the existing input key is updated to the input value

But in Databend, do we support dynamically setting config in the query? Alternatively, we can set the config when querying with the bendsql?

[b41sh]

However, there is such a description in Snowflake:

If updateFlag is set to TRUE, then the existing input key is updated to the input value

But in Databend, do we support dynamically setting config in the query? Alternatively, we can set the config when querying with the bendsql?

We can register a new function with four arguments for map_insert, for example st_geometryfromwkb can support two and three args.

[hanxuanliang]

But, I have discovered a problem now:

CREATE TABLE map_insert_test(col_str Map(String, String Null) Not Null, col_int Map(String, Int Null) Null);

SELECT map_insert(col_int, 'a', 100)
FROM map_insert_test;

For the NULL map, it is currently stuck and unable to run. However, I tried to modify the domain calculation, but it had no effect. I have no idea here 😣

[b41sh]

But, I have discovered a problem now:

CREATE TABLE map_insert_test(col_str Map(String, String Null) Not Null, col_int Map(String, Int Null) Null);

SELECT map_insert(col_int, 'a', 100)
FROM map_insert_test;

For the NULL map, it is currently stuck and unable to run. However, I tried to modify the domain calculation, but it had no effect. I have no idea here 😣

Both val_domain and insert_value_domain may be nullable, and we need to deal with various cases, such as

match (val_domain, insert_value_domain) {
    (Domain::Nullable(NullableDomain {..}), Domain::Nullable(NullableDomain {..})) => ...,
    (Domain::Nullable(NullableDomain {..}), _) => ...,
    (_, Domain::Nullable(NullableDomain {..})) => ...,
    (_, _) => ...,
}

[b41sh]

Thanks for @hanxuanliang PR. And look forward to keeping an eye on databend in the future