6e4f76de54
In the previous design, we were compatible with MySQL's auto-increment column and default value to bypass the null value check when writing back Jdbc External Table. However, because MySQL's default value is not completely unified with Doris, this resulted in The unsuitable default value is wrong. In response to this situation, I made the following optimizations 1. For JDBC External Table, we always allow certain columns to be missing during insertion. Even if these columns are not allowed to be empty at the source end, the error should be generated by the source end, not Doris herself. 2. When the target column is non-nullable and the insertion is done via `INSERT INTO tbl VALUES()` or `INSERT INTO tbl SELECT constants`, Doris should verify any inconsistency between them and throw an exception. This check is not applied for `INSERT INTO tbl SELECT ... FROM tbl` operations.
新加case注意事项
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变量名前要写 def，否则是全局变量，并行跑的 case 的时候可能被其他 case 影响。
Problematic code:
ret = ***Correct code:
def ret = *** -
尽量不要在 case 中 global 的设置 session variable，或者修改集群配置，可能会影响其他 case。
Problematic code:
sql """set global enable_pipeline_x_engine=true;"""Correct code:
sql """set enable_pipeline_x_engine=true;""" -
如果必须要设置 global，或者要改集群配置，可以指定 case 以 nonConcurrent 的方式运行。
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case 中涉及时间相关的，最好固定时间，不要用类似 now() 函数这种动态值，避免过一段时间后 case 就跑不过了。
Problematic code:
sql """select count(*) from table where created < now();"""Correct code:
sql """select count(*) from table where created < '2023-11-13';""" -
case 中 streamload 后请加上 sync 一下，避免在多 FE 环境中执行不稳定。
Problematic code:
streamLoad { ... } sql """select count(*) from table """Correct code:
streamLoad { ... } sql """sync""" sql """select count(*) from table """