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Final Class Yiisoft\Db\Mssql\Builder\ArrayMergeBuilder

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InheritanceYiisoft\Db\Mssql\Builder\ArrayMergeBuilder » Yiisoft\Db\Expression\Function\Builder\MultiOperandFunctionBuilder

Builds SQL expressions which merge arrays for {@see ArrayMerge} objects.

(SELECT '[' + STRING_AGG('"' + STRING_ESCAPE(value, 'json') + '"', ',') + ']' AS value FROM (
    SELECT value FROM OPENJSON(operand1)
    UNION
    SELECT value FROM OPENJSON(operand2)
) AS t)

Protected Methods

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Method Description Defined By
buildFromExpression() Builds a SQL expression which merges arrays from the given {@see ArrayMerge} object. Yiisoft\Db\Mssql\Builder\ArrayMergeBuilder

Method Details

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buildFromExpression() protected method

Builds a SQL expression which merges arrays from the given {@see ArrayMerge} object.

protected string buildFromExpression ( \Yiisoft\Db\Expression\Function\ArrayMerge $expression, array &$params )
$expression \Yiisoft\Db\Expression\Function\ArrayMerge

The expression to build.
$params array

The parameters to bind.
return string

The SQL expression.

 

                protected function buildFromExpression(MultiOperandFunction $expression, array &$params): string
{
    $selects = [];
    foreach ($expression->getOperands() as $operand) {
        $selects[] = 'SELECT value FROM OPENJSON(' . $this->buildOperand($operand, $params) . ')';
    }
    $unions = implode(' UNION ', $selects);
    $orderBy = $expression->getOrdered() ? ' WITHIN GROUP (ORDER BY value)' : '';
    return <<<SQL
        (SELECT '[' + STRING_AGG('"' + STRING_ESCAPE(value, 'json') + '"', ',')$orderBy + ']' AS value FROM ($unions) AS t)
        SQL;
}