$union public property This is used to construct the UNION clause(s)
orWhere() public method Adds an additional WHERE condition
where() public method Sets the WHERE part of the query
leftJoin() public method Appends a LEFT OUTER JOIN part
createCommand() public method Creates a DB command that
orHaving() public method Adds an additional HAVING condition
addSelect() public method Add more columns to the SELECT
queryScalar() protected method Queries a scalar value
$from public property The table(s) to be selected from. For example
$distinct public property Whether to select distinct rows of data
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