Question

在groovy教程中：http://groovy.codehaus.org/Database+features

有关于手续的部分。当我尝试这个例子时：

The same example again but with a GString variation:

def first = 'Sam'
sql.call("{$Sql.VARCHAR = call FullName($first)}") { name ->
    assert name == 'Sam Pullara'
}

我有例外：

Chyba: ORA-06550: line 1, column 13:
PLS-00222: no function with name 'FULLNAME' exists in this scope
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

java.sql.SQLException: ORA-06550: line 1, column 13:
PLS-00222: no function with name 'FULLNAME' exists in this scope
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)

是的，这是异常的，因为我只得到了程序FULLNAME，我想要调用的不是函数。这个教程仍然是实际的吗？

Answer 1

在Oracle中，存储过程无法返回值，函数可以返回值。这就是你得到那个错误的原因。您可以使用我的测试存储过程和groovy代码验证...

CREATE OR REPLACE PROCEDURE test_procedure
( string_in IN OUT VARCHAR2 ) IS
BEGIN
string_in := 'hi ' || string_in ;
END;

import groovy.sql.Sql

Sql sql = Sql.newInstance("jdbc:oracle:thin:@hostname:1521:dbname", username","password","oracle.jdbc.driver.OracleDriver")

def first="Wade"
sql.call '{call test_procedure(?)}',

    [Sql.inout(Sql.VARCHAR(first))],
    { test ->
        println ">>" +  test  + "<<"; // >>hi Wade<<
    }

Answer 2

import groovy.sql.Sql
import oracle.jdbc.driver.OracleTypes

Sql sql = Sql.newInstance("jdbc:oracle:thin:@hostname:1521:dbname", "username","password","oracle.jdbc.driver.OracleDriver")
dept_id = 50

sql.call('{? = call FullName(?)}', [Sql.VARCHAR, 'Sam']) { name->
    println name
}

使用GString变量从groovy调用存储过程

2 个答案: