82a8232c8a
pred column also needs to be filtered by expr, exclude delete condition column, delete condition column not need to be filtered, query engine does not need it, after _output_column_by_sel_idx, delete condition materialize column will be erase at the end of the block. Eg: delete from table where a = 10; select b from table; a column only effective in segment iterator, the block from query engine only contain the b column, so no need to filter a column by expr.
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';"""