wangyum opened a new pull request, #36821:
URL: https://github.com/apache/spark/pull/36821
### What changes were proposed in this pull request?
Update the migration guide after fixing the precision of the return type of
round-like functions.
How to reproduce this issue:
```sql
-- Spark 3.2
CREATE TABLE t1(CURNCY_AMT DECIMAL(18,6)) using parquet;
CREATE VIEW v1 AS SELECT BROUND(CURNCY_AMT, 6) AS CURNCY_AMT FROM t1;
```
```sql
-- Spark 3.3
SELECT * FROM v1;
org.apache.spark.sql.AnalysisException: [CANNOT_UP_CAST_DATATYPE] Cannot up
cast CURNCY_AMT from "DECIMAL(19,6)" to "DECIMAL(18,6)".
```
### Why are the changes needed?
Update the migration guide.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
N/A
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