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Distributed SQL Query

com.hazelcast.query.SqlPredicate takes the regular SQL where clause. Here is an example:

IMap<Employee> map = hazelcastInstance.getMap( "employee" );
Set<Employee> employees = map.values( new SqlPredicate( "active AND age < 30" ) );

Supported SQL syntax:

AND/OR: <expression> AND <expression> AND <expression>...

  • active AND age>30
  • active=false OR age = 45 OR name = 'Joe'
  • active AND ( age > 20 OR salary < 60000 )

Equality: =, !=, <, <=, >, >=

  • <expression> = value
  • age <= 30
  • name = "Joe"
  • salary != 50000

BETWEEN: <attribute> [NOT] BETWEEN <value1> AND <value2>

  • age BETWEEN 20 AND 33 ( same as age >= 20 AND age <= 33 )
  • age NOT BETWEEN 30 AND 40 ( same as age < 30 OR age > 40 )

LIKE: <attribute> [NOT] LIKE 'expression'

The % (percentage sign) is placeholder for multiple characters, an _ (underscore) is placeholder for only one character.

  • name LIKE 'Jo%' (true for 'Joe', 'Josh', 'Joseph' etc.)
  • name LIKE 'Jo_' (true for 'Joe'; false for 'Josh')
  • name NOT LIKE 'Jo_' (true for 'Josh'; false for 'Joe')
  • name LIKE 'J_s%' (true for 'Josh', 'Joseph'; false 'John', 'Joe')

IN: <attribute> [NOT] IN (val1, val2,...)

  • age IN ( 20, 30, 40 )
  • age NOT IN ( 60, 70 )
  • active AND ( salary >= 50000 OR ( age NOT BETWEEN 20 AND 30 ) )
  • age IN ( 20, 30, 40 ) AND salary BETWEEN ( 50000, 80000 )