Function transformWhereClause

src/backend/parser/parse_clause.c:1939–1953

* transformWhereClause - * Transform the qualification and make sure it is of type boolean. * Used for WHERE and allied clauses. * * constructName does not affect the semantics, but is used in error messages */

 * constructName does not affect the semantics, but is used in error messages
 */
Node *
transformWhereClause(ParseState *pstate, Node *clause,
					 ParseExprKind exprKind, const char *constructName)
{
	Node	   *qual;

	if (clause == NULL)
		return NULL;

	qual = transformExpr(pstate, clause, exprKind);

	qual = coerce_to_boolean(pstate, qual, constructName);

	return qual;
}


/*