https://www.php.net/manual/zh/pdostatement.columncount.php
PHP: PDOStatement::columnCount - Manual
phpmanual
https://help.hcl-software.com/dom_designer/12.0.2/basic/H_COLUMNCOUNT_PROPERTY_JAVA.html
ColumnCount (View - Java)
Read-only. The number of columns in a view.
viewjava
https://hbase.apache.org/2.3/devapidocs/org/apache/hadoop/hbase/regionserver/querymatcher/ColumnCount.html
ColumnCount (Apache HBase 2.3.0 API)
apache hbaseapi
https://forum.qt.io/topic/17747/why-is-qabstractlistmodel-columncount-private
Why is QAbstractListModel::columnCount() private? | Qt Forum
Jun 22, 2012 - Hi an thanks for reading! The title says everything.. I'm using QAbstractListModel and I get error when I try to call columnCount() because it is private. I ...
privateqtforum