kobe6th opened a new pull request, #34244:
URL: https://github.com/apache/doris/pull/34244
## Proposed changes
Issue Number: close #xxx
when try to modify multiple columns with changed positions, attempting to
modify a column that has already been moved will result in a 'column not found'
error.
`
CREATE TABLE `test` (
`id` BIGINT NOT NULL,
`v1` BIGINT NULL,
`v2` VARCHAR(128) NULL,
`v3` VARCHAR(128) NULL
) ENGINE=OLAP
UNIQUE KEY(`id`)
DISTRIBUTED BY HASH(`id`) BUCKETS 1
PROPERTIES (
"replication_allocation" = "tag.location.default: 1"
);
Query OK, 0 rows affected (0.00 sec)
ALTER TABLE `test` MODIFY COLUMN `v2` VARCHAR(512) NULL AFTER `v1`, MODIFY
COLUMN `v3` VARCHAR(512) NULL AFTER `v2`;
ERROR 1105 (HY000): errCode = 2, detailMessage = Column[v2] does not exists
`
when column datatype change, shadow prefix will be add to column name, we
can use NonShadowName to find this column.
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