Package parser implements a parser for SQL statements Inspired by go/parser.

New initialize a new RamSQL server.

NewAttribute initialize a new Attribute struct.

NewOperator initializes the operator matching the Token number.

NewRelation initializes a new Relation struct.

NewTable initializes a new Table.

NewTuple should check that value are for the right Attribute and match domain.

TrueOperator always returns true.

TruePredicate is a predicate wich return always true.

Attribute (aka Field, Column) is a named column of a relation.

Engine is the root struct of RamSQL server.

Predicate evaluate if a condition is valid with 2 values and an operator on this 2 values.

Relation is a table with column and rows AKA File.

Table is defined by a name and attributes A table with data is called a Relation.

Tuple is a row in a relation.

Value is a value given to predicates.

PredicateLinker referes to AND and OR operators.

Operator compares 2 values and return a boolean.