$and: This operator works the same as AND in
SQL Server. $and operator uses to perform a logical operation on two or more than
two arrays and select the documents that satisfy all expression.
Syntax:
{
$and: [ { <expression1> }, { <expression2> }, ... , {
<expressionN> } ] }
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Example: Suppose we have a collection “Order”
and want to select those records whose quantity is 2 and the price is 200. See the following collection.
{
"_id" : 1, "item" : "item1", "qty" :
1, "Price" : 500 }
{
"_id" : 2, "item" : "item1", "qty" :
2, "Price" : 200 }
{
"_id" : 3, "item" : "item1", "qty" :
4, "Price" : 300 }
{
"_id" : 4, "item" : "item1", "qty" :
8, "Price" : 700 }
{
"_id" : 5, "item" : "item1", "qty" :
2, "Price" : 500 }
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Run the following query to get the expected result described above.
db.Order.find({$and:[{qty:2},{Price:200}]})
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Result:
{
"_id" : 2, "item" : "item1", "qty" :
2, "Price" : 200 }
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