types: distinguish between string and non-string in execute statement arguments (#28061)
types: distinguish between string and non-string in execute statement arguments (#28061)

 
pingcap/tidb,pingcap/tidb,kyle-wang/tidb,c4pt0r/tidb,kyle-wang/tidb,pingcap/tidb,ngaut/tidb,c4pt0r/tidb,pingcap/tidb,kyle-wang/tidb,c4pt0r/tidb,coocood/tidb,ngaut/tidb,c4pt0r/tidb,pingcap/tidb,ngaut/tidb,kyle-wang/tidb,c4pt0r/tidb,c4pt0r/tidb,pingcap/tidb,kyle-wang/tidb,coocood/tidb,ngaut/tidb,ngaut/tidb,kyle-wang/tidb,ngaut/tidb