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Bug
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    Resolution: Fixed
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P3: Somewhat important
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    None
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    6.3.0
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    None
 
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        my bad
 
bool QSqlTableModel::insertRecord(int row, const QSqlRecord &record)
Inserts the record at position row. If row is negative, the record will be appended to the end. Calls insertRows() and setRecord() internally.
Problem: row is negative, set -1 always return false. But set 0 is okay.