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29 lis 2019 · How I do if exists in Oracle? In SQL Server the following works. create or replace FUNCTION FExemplo(p_processoId INT) RETURN varchar2. AS. v_Result varchar2(255); v_TemIsso INT; BEGIN. v_TemIsso := 0; IF EXISTS (SELECT EXEMPLO.EXEMPLOID FROM EXEMPLO WHERE EXEMPLO.EXEMPLOID = p_processoId) THEN. v_TemIsso := 1; END IF; RETURN ''; END FExemplo;
EXISTS. TRUE if a subquery returns at least one row. SELECT department_id. FROM departments d. WHERE EXISTS. (SELECT * FROM employees e. WHERE d.department_id. = e.department_id) ORDER BY department_id;
Learn how to use the Oracle EXISTS operator to test for the existence of rows in a subquery. See examples of SELECT, UPDATE, INSERT and EXISTS vs. IN statements.
5 gru 2019 · A forum thread where users discuss how to use EXISTS () in PL/SQL, a dialect for procedural SQL in Oracle. See examples, explanations, and alternative suggestions for checking row existence in tables.
EXISTS : TRUE if a subquery returns at least one row. SELECT department_id FROM departments d WHERE EXISTS (SELECT * FROM employees e WHERE d.department_id = e.department_id) ORDER BY department_id;
EXISTS TRUE if a subquery returns at least one row. SELECT department_id FROM departments d WHERE EXISTS (SELECT * FROM employees e WHERE d.department_id = e.department_id);
This Oracle tutorial explains how to use the Oracle EXISTS condition with syntax and examples. The Oracle EXISTS condition is used in combination with a subquery and is considered "to be met" if the subquery returns at least one row. It can be used in a SELECT, INSERT, UPDATE, or DELETE statement.
