[Improve]Support modify column type without default when column exists default value #490
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DongLiang-0
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Sep 18, 2024
| private static final String CREATE_DATABASE_DDL = "CREATE DATABASE IF NOT EXISTS %s"; | ||
| private static final String MODIFY_TYPE_DDL = "ALTER TABLE %s MODIFY COLUMN %s %s"; | ||
| private static final String MODIFY_COMMENT_DDL = "ALTER TABLE %s MODIFY COLUMN %s COMMENT '%s'"; | ||
| private static final String SHOW_FULL_COLUMN_DDL = "SHOW FULL COLUMNS FROM `%s`.`%s`"; |
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Is this approach not universal?
This sql seems to be the unique syntax of MySQL. If the upstream is Oracle or PostgreSQL, it will not be supported.
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It only executes within Doris.
JNSimba
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Sep 18, 2024
flink-doris-connector/src/main/java/org/apache/doris/flink/sink/schema/SchemaChangeManager.java
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PeatBoy
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Jan 21, 2025
…s default value (apache#490) (cherry picked from commit c4ae051)
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Proposed changes
Issue Number: close #xxx
Problem Summary:
Currently, it's not allowed to change a column type that has a default value when upstream does not carry a default value.
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