JoinExpr

Join condition operand. Exactly one of column / expression set.

column object

Backing column reference in 'alias.col' form

하나 이상(anyOf)

• string
• null

string

expression object

SQL fragment when the operand is a computed expression

하나 이상(anyOf)

• string
• null

string

JoinExpr

{
  "column": "string",
  "expression": "string"
}