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In Oracle SQL Developer, you can set global variables using substitution variables or bind variables. These variables can be used to store values that can be referenced in SQL queries.
Using Substitution Variables
Substitution variables are defined using the DEFINE command and referenced using & or &&.
DEFINE EmpIDVar = 1234;SELECT *FROM EmployeesWHERE EmployeeID = &EmpIDVar;コピーしました。✕コピーIn this example, EmpIDVar is defined as a substitution variable with a value of 1234. The variable is then used in the SELECT statement.
Using Bind Variables
Bind variables are defined using the VARIABLE command and referenced using a colon (:).
VARIABLE EmpIDVar NUMBER;BEGIN:EmpIDVar := 1234;END;/SELECT *FROM EmployeesWHERE EmployeeID = :EmpIDVar;コピーしました。✕コピーIn this example, EmpIDVar is defined as a bind variable. The value is assigned within a PL/SQL block, and the variable is used in the SELECT statement.
Important Considerations
How do I use variables in Oracle SQL Developer?
In SQL Developer, if you run a statement that has any number of bind variables (prefixed with a colon), you'll be prompted to enter values. As Alex points out, you can also do something similar using the …
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SQL> variable v_emp_id number;SQL> select 1234 into :v_emp_id from dual;12341234SQL> select *...How do I declare and use variables in Oracle?
2011年7月5日 · I actually tried the solution posted by Jon of All Trades and that …
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