You can’t get the alias. In RelNode-land there is no such concept. Just the
inputs to the current RelNode, identified by ordinal.
Maybe at the time of SQL-to-RelNode conversion you can convert the aliases in
the hint into ordinals. That’s the last moment that aliases are available.
Julian
>
Hi Community,
Currently I'm working on Calcite SQL Hint,and I want to know how to get the
table alias in al RelNode tree.
For example,consider the following sql :
select /*+ BROADCAST(a,b) */ * from nation as a left join nation as b on
a.N_REGIONKEY = b.N_REGIONKEY
The hint BROADCAST(a,b) indic
Tanner Clary created CALCITE-5933:
-
Summary: Add SAFE_DIVIDE function (enabled in BigQuery library)
Key: CALCITE-5933
URL: https://issues.apache.org/jira/browse/CALCITE-5933
Project: Calcite
Tanner Clary created CALCITE-5932:
-
Summary: Add SAFE_SUBTRACT function (enabled in BigQuery library)
Key: CALCITE-5932
URL: https://issues.apache.org/jira/browse/CALCITE-5932
Project: Calcite
Thanks for pointing this out! It looks like Julian might have a mirror of
that page at the link below that could be swapped out. Unfortunately, with
the original page unavailable, I can't confirm.
http://www.hydromatic.net/wiki/RelationalExpressionMetadata
--
Michael Mior
mm...@apache.org
On We
Also I had a few more follow up questions, if you have the availability to
respond:
- Is it `RelToSqlConverter` or `SqlToRelConverter` where the changes need
to be made?
- I already have the `HASH` function working in its non-star format (e.g.
`HASH(A, B, C)` or `HASH(X)`). Would using `FUNCTION_ST
Hello Hongyu Guo,
Interesting! I’ll definitely explore this as an option. I’m curious though, do
the convertlet tables in RelToSqlConverter have access to enough information to
be able to look at a call to HASH(*) and derive the table names (+ their column
names) corresponding the scope? My un
Hello,
I found a link in RelMetadataProvider.java has expired.
The link is http://wiki.eigenbase.org/RelationalExpressionMetadata
Found in
https://github.com/apache/calcite/blob/main/core/src/main/java/org/apache/calcite/rel/metadata/RelMetadataProvider.java
Best,
Hongyu Guo
Hi Kian Nassre,
I try to create a HASH function instance to solve this problem
```
public static final SqlFunction HASH =
new SqlFunction("HASH",
SqlKind.OTHER_FUNCTION,
ReturnTypes.BIGINT,
null,
OperandTypes.ONE_OR_MORE,
SqlFunctionCategory.NUMERIC) {
@Override public Sql
Claude Brisson created CALCITE-5931:
---
Summary: Fix integral number detection
Key: CALCITE-5931
URL: https://issues.apache.org/jira/browse/CALCITE-5931
Project: Calcite
Issue Type: Bug
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