question: public long queryForCountStar ( DatabaseConnection databaseConnection ) throws SQLException { if ( countStarQuery == null ) { StringBuilder sb = new StringBuilder ( 64 ) ; sb . append ( "SELECT COUNT(*) FROM " ) ; databaseType . appendEscapedEntityName ( sb , tableInfo . getTableName ( ) ) ; countStarQuery = sb . toString ( ) ; } long count = databaseConnection . queryForLong ( countStarQuery ) ; logger . debug ( "query of '{}' returned {}" , countStarQuery , count ) ; return count ; }
target:  Return a long value which is the number of rows in the table.