chenmingsong comments

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                                            chenmingsong

[Feature]: Support cast decimal as bigint

> mysql> select cast(-19999999999999999999 as signed); ERROR 1105 (HY000): Operator 'cast' with parameters [DECIMAL128 BIGINT] will be implemented in future version. > > @m-schen bigint to decimal128 seems not supported...

[Feature]: Support cast decimal as bigint

Track it with a new issue tag. we do not have decimal128 -> bigint now. but I'm no sure if we will fix it at version 0.6 @iamlinjunhong

[Discussion]: Should we support float(m, n) and double(m, n)?

it's just a discussion that time. I found that someone try to close it 16 hours age. can I think that we won't support this form of float / double...

[Bug]: minus (-) operator doesn't support DATE/DATETIME type

'+' is also

[Bug]: panic info occurs when I use LIMIT 'a'

I will add a error check for that.

[Discussion]: What's the semantic of cast BIGINT as TIMESTAMP

and the case select a-1 from t; if a is timestamp, and we convert 1 into timestamp, we should support '-' operator between timestamp.

[Discussion]: What's the semantic of cast BIGINT as TIMESTAMP

do we need calculate operator (+, -, / and so on) between timestamp?

[Discussion]: What's the semantic of cast BIGINT as TIMESTAMP

it's just a discussion.

[Bug]: create index on table report 'internal error: Invalid alloc size 1147486208'.

类似issue太多了，属于select语句过程因为表达式计算等原因产生了超过1个g的batch所导致的问题。都没开始弄。

[Bug]: create index on table report 'internal error: Invalid alloc size 1147486208'.

https://github.com/matrixorigin/matrixone/issues/12956 https://github.com/matrixorigin/matrixone/issues/12021 https://github.com/matrixorigin/MO-Cloud/issues/1921 都是相似issue，未处理。