jackye1995 commented on code in PR #6617:
URL: https://github.com/apache/iceberg/pull/6617#discussion_r1073729039
##########
spark/v3.3/spark-extensions/src/main/antlr/org.apache.spark.sql.catalyst.parser.extensions/IcebergSqlExtensions.g4:
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@@ -168,16 +175,41 @@ fieldList
;
nonReserved
- : ADD | ALTER | AS | ASC | BY | CALL | DESC | DROP | FIELD | FIRST | LAST
| NULLS | ORDERED | PARTITION | TABLE | WRITE
- | DISTRIBUTED | LOCALLY | UNORDERED | REPLACE | WITH | IDENTIFIER_KW |
FIELDS | SET
+ : ADD | ALTER | AS | ASC | BRANCH | BY | CALL | CREATE | DESC | DROP |
FIELD | FIRST | LAST | NULLS | OF | ORDERED | PARTITION | TABLE | WRITE
+ | DISTRIBUTED | LOCALLY | UNORDERED | REPLACE | RETAIN | VERSION | WITH |
IDENTIFIER_KW | FIELDS | SET | SNAPSHOT | SNAPSHOTS
| TRUE | FALSE
| MAP
;
+snapshotId
+ : number
+ ;
+
+numSnapshots
+ : number
+ ;
+
+snapshotRetain
+ : number
+ ;
+
+snapshotRefRetain
+ : number
+ ;
+
+snapshotRefRetainTimeUnit
Review Comment:
If we only allow a few values MONTHS, DAYS, HOURS, MINUTES, can we just list
them here as keywords instead of using a generic identifier?
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