使用 QSqlTableModel::setFilter(const QString & filter) 过滤 IS NOT NULL
filterring on IS NOT NULL using QSqlTableModel::setFilter(const QString &filter)
如果我想在 IS NOT NULL condition using QSqlTableModel::setFilter(const QString &filter) 上进行过滤,我应该将什么过滤语法传递给该方法?
来自docs:
The filter is a SQL WHERE clause without the keyword WHERE (for example, name='Josephine'
).
所以带有 IS NOT NULL
的适当过滤器类似于
mySqlTableModel.setFilter("id IS NOT NULL");
如果我想在 IS NOT NULL condition using QSqlTableModel::setFilter(const QString &filter) 上进行过滤,我应该将什么过滤语法传递给该方法?
来自docs:
The filter is a SQL WHERE clause without the keyword WHERE (for example,
name='Josephine'
).
所以带有 IS NOT NULL
的适当过滤器类似于
mySqlTableModel.setFilter("id IS NOT NULL");