PlanExpression Expressions¶

PlanExpression is an extension of the Expression abstraction for subquery expressions (that are expressions with query plans).

Contract¶

exprId¶

exprId: ExprId

Expression ID

plan¶

plan: T

Query plan of a subquery

withNewPlan¶

withNewPlan(
  plan: T): PlanExpression[T]

Updates the expression with a new plan

Implementations¶

• ExecSubqueryExpression
• SubqueryExpression

conditionString¶

conditionString: String

conditionString simply concatenates all children's text representation between [ and ] characters, separated by &&.

conditionString is used when DynamicPruningSubquery, ScalarSubquery, ListQuery and Exists expressions are requested for a text representation.