SQL to SequoiaDB shell to Java

SequoiaDB 的查询用 json（bson）对象表示，下表以例子的形式显示了 SQL 语句，SequoiaDB shell 语句和 SequoiaDB Java 驱动程序语法之间的对照。

SQLSequoiaDB shellJava Driver
insert into employee( a, b) values( 1, -1 )db.sample.employee.insert( { a: 1, b: -1 } )employee.insert( “{ ‘a’: 1, ‘b’: -1 }” )
select a,b from employeedb.sample.employee.find( null, { a: “”, b: “” } )employee.query( “”, “{ ‘a’: ‘’, ‘b’: ‘’ }”, “”, “” )
select from employeedb.sample.employee.find()employee.query()
select from employee where age=20db.sample.employee.find( { age: 20 } )employee.query( “{ ‘age’: 20 }”, “”, “”, “”)
select from employee where age=20 order by namedb.sample.employee.find( { age: 20 } ).sort( { name: 1 } )employee.query( “{ ‘age’: 20 }”, “”, “{ ‘name’: 1 }”, “” )
select from employee where age > 20 and age < 30db.sample.employee.find( { age: { $gt: 20, $lt: 30 } } )employee.query( “{ ‘age’: { ‘$gt’: 20, ‘$lt’: 30 } }”, “”, “”, “”)
create index testIndex on employee(name)db.sample.employee.createIndex( “testIndex”, { name: 1 }, false )employee.createIndex( “testIndex”, “{ ‘name’: 1 }”, false, false )
select from employee limit 20 offset 10db.sample.employee.find().limit( 20 ).skip( 10 )employee.query( “”, “”, “”, “”, 10, 20 )
select count() from employee where age > 20db.sample.employee.find( { age: { $gt: 20 } } ).count()employee.getCount( “{ ‘age’: { ‘$gt’: 20 } }” )
update employee set a=a+2 where b=-1db.sample.employee.update( { $inc: { a: 2 } }, { b: -1 } )employee.update( “{ ‘b’: -1 }”, “{ ‘$inc’: { ‘a’: 2 } }”, “” )
delete from employee where a=1db.sample.employee.remove( { a: 1 } )employee.delete( “{ ‘a’: 1 }” )