TONG, Zhigao comments

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                                            TONG, Zhigao

expression: fix casting REAL type to STRING type (#16975)

ref https://github.com/pingcap/tidb/pull/53207

expression: fix casting REAL type to STRING type (#16975)

/cc @gengliqi

expression: fix casting REAL type to STRING type (#16975)

/assign @solotzg

expression: fix casting REAL type to STRING type (#16975)

/cc @wshwsh12

Runtime Error: index out of range

@hawkingrei PTAL

Unexpected Result in Windows Function inTiFlash

Procedure: ``` drop table if exists t0; CREATE TABLE t0 (c0 INT); INSERT INTO t0 (c0) VALUES (1); ALTER TABLE t0 SET TIFLASH REPLICA 1; set tidb_isolation_read_engines='tiflash'; SELECT AVG(0) OVER(ORDER...

slice bounds out of range

Since https://github.com/pingcap/tidb/pull/48613, https://github.com/pingcap/tidb/blob/v8.5.2/pkg/executor/aggregate/agg_util.go#L149-L150 The `codec.HashGroupKey` return error and `errCtx.HandleError` set it to nil.

slice bounds out of range

@YangKeao PTAL

"parallel hash aggregation panicked" with spill data to disk

@xzhangxian1008 Is there a known issue related to this one ?

"parallel hash aggregation panicked" with spill data to disk

@dveeden Can you provide procedures to reproduce it ?