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- 07.12.2021, 12:21
- Forum: ZeosLib 7.2 Forum
- Topic: Parameter cannot be derived from sql with subselect queries
- Replies: 4
- Views: 630
Re: Parameter cannot be derived from sql with subselect queries
I had the same problem using ADO connection with MySql 8.0 x64 server. I tried the fix explained here and it worked: https://stackoverflow.com/a/31141172 Replaced this line inside /src/dbc/ZDbcAdoUtils.pas Parameter.Attributes := dwFlags and $FFFFFFF0; { Mask out Input/Output flags } With if dwFlags...