Is your feature request related to a problem? Please describe.
Doris doesn't support decimal precision schema change operation now. It's hard for user to be sure of the precision at the beginning.
ALTER TABLE t MODIFY COLUMN c DECIMAL(20,2) KEY;
incubator-doris/fe/src/main/java/org/apache/doris/catalog/Column.java
Lines 281 to 283 in 81aa1c5
| | if (this.getPrecision() != other.getPrecision()) { |
| | thrownewDdlException("Cannot change precision"); |
| | } |
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