potterhe opened a new pull request, #600:
URL: https://github.com/apache/doris-flink-connector/pull/600
# Proposed changes
## Problem Summary:
```sql
CREATE TABLE `modify_column_type_with_default_value2` (
`id` int NOT NULL,
`cname` varchar(11) NOT NULL DEFAULT ""
)
UNIQUE KEY(`id`)
DISTRIBUTED BY HASH(`id`) BUCKETS 1
PROPERTIES (
"replication_num" = "1"
);
```
call api
```
String columnName = "cname";
String newColumnType = "varchar(11)";
FieldSchema field = new FieldSchema(columnName, newColumnType, "");
schemaChangeManager.modifyColumnDataType(DATABASE, modifyColumnTbls,
field);
```
The actual generated ddl is
```sql
ALTER TABLE `test_sc_db`.`modify_column_type_with_default_value2` MODIFY
COLUMN `cname` varchar(11)
```
Expected generated ddl is
```sql
ALTER TABLE `test_sc_db`.`modify_column_type_with_default_value2` MODIFY
COLUMN `cname` varchar(11) DEFAULT ''
```
## Checklist(Required)
1. Does it affect the original behavior: (Yes)
2. Has unit tests been added: (Yes)
3. Has document been added or modified: (No Need)
4. Does it need to update dependencies: (No)
5. Are there any changes that cannot be rolled back: (No)
## Further comments
n/a
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