我在mysql中有一个存储过程正常工作。我试图用NODEJS来称呼它。如何在nodejs中获取存储过程的out值？
mysqlPool.getConnection(function(error,conn){
conn.query(" SET @p1 = '" + P_MEMBER_ID + "' ; " +
" SET @p2 = '" + P_MEMBER_ID_TEST + "' ; " +
" SET @p3 = @insertResults'" + "' ; " +
"CALL PROC_MEMBER_INSERT(" +
" @p1 , " +
" @p2 , " +
" @p3 )", function(error,results)
{
if (error)
{
console.error(error);
throw error;
}else{
console.log(results);
res.status(200).jsonp({insertResults:test[2][0]});
};
});
conn.release();
});
MYSQL stored proc example.
..
CREATE DEFINER=`phil`@`%` PROCEDURE `PROC_MEMBER_INSERT`(
in P_MEMBER_ID INT,
in P_MEMBER_ID_TEST INT,
out RESULT_MESSAGE varchar(120)
)
BEGIN
.....
由于 菲尔
========================
var connection = mysql.createConnection({
host: '11.11.11.11',
user: 'phil',
password: 'password',
port: 3306,
database: 'testdb',
connectionLimit : 100,
multipleStatements: true
});
var query = connection.query(" SET @p1 = '" + P_MEMBER_ID + "' ; " +
" SET @p2 = '" + P_MEMBER_ID_TEST + "' ; " +
" SET @p3 = @insertResults " + " ; " +
"CALL PROC_MEMBER_INSERT(" +
" @p1 , " +
" @p2 , " +
" @p3 ); select @insertResults;");
query
.on('error', function(err) {
// Handle error, an 'end' event will be emitted after this as well
console.log('error ============= ', err);
})
.on('fields', function(fields) {
// the field packets for the rows to follow
console.log('fields ============= ', fields);
//res.status(200).jsonp({insertResults:fields});
})
.on('result', function(row) {
// Pausing the connnection is useful if your processing involves I/O
// connection.pause();
console.log('results ============= ', row);
//res.status(200).jsonp({insertResults:row});
//processRow(row, function() {
// connection.resume();
//});
})
.on('end', function() {
// all rows have been received
});
MYSQL stored proc example.
..
CREATE DEFINER=`phil`@`%` PROCEDURE `PROC_MEMBER_INSERT`(
in P_MEMBER_ID INT,
in P_MEMBER_ID_TEST INT,
out RESULT_MESSAGE varchar(120)
)
BEGIN
....
输出看起来是空的。
没有记录被输入。
========= output ==============
api: 2 -- end PROC_MEMBER_INSERT
api: 2 P_MEMBER_ID ----------> 5
api: 2 P_MEMBER_ID_TEST -----> 1195
results ============= { fieldCount: 0,
affectedRows: 0,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
results ============= { fieldCount: 0,
affectedRows: 0,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
results ============= { fieldCount: 0,
affectedRows: 0,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
results ============= { fieldCount: 0,
affectedRows: 1,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
fields ============= [ { catalog: 'def',
db: '',
table: '',
orgTable: '',
name: '@RESULT_MESSAGE',
orgName: '',
charsetNr: 63,
length: 16777216,
type: 251,
flags: 128,
decimals: 31,
default: undefined,
zeroFill: false,
protocol41: true } ]
results ============= { '@insertResults': null }
=============
我添加了更多测试内容，现在看到它正在下降到.on（＆＃39;结果并且始终为null。
results ============= { fieldCount: 0,
affectedRows: 0,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
row user not found
results ============= { fieldCount: 0,
affectedRows: 0,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
row user not found
results ============= { fieldCount: 0,
affectedRows: 0,
insertId: 0,
serverStatus: 10,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
row user not found
results ============= { fieldCount: 0,
affectedRows: 1,
insertId: 0,
serverStatus: 2,
warningCount: 0,
message: '',
protocol41: true,
changedRows: 0 }
.on('error', function(err) {
// Handle error, an 'end' event will be emitted after this as well
console.log('error ============= ', err);
return;
})
.on('fields', function(fields) {
// the field packets for the rows to follow
console.log('fields ============= ', fields);
if (fields && fields.length)
console.log('fields user found :)');
else
console.log('fields user not found');
//res.status(200).jsonp({winkResults:fields});
})
.on('result', function(row) {
// Pausing the connnection is useful if your processing involves I/O
// connection.pause();
console.log('results ============= ', row);
if (row && row.length)
console.log('row user found :)');
else
console.log('row user not found');
//res.status(200).jsonp({winkResults:row});
//processRow(row, function() {
// connection.resume();
//});
})
.on('end', function() {
// all rows have been received
});
答案 0 :(得分：0)
在select @p3;
CALL PROC_MEMBER_INSERT
希望这有帮助！
答案 1 :(得分：0)
您应该创建一个启用多语句的连接;
var connection = mysql.createConnection({multipleStatements: true});
执行查询时，可以通过字段和结果访问out值，如下所示;
var query = connection.query(' SET @p1 = '" + P_MEMBER_ID + "' ; " +
" SET @p2 = '" + P_MEMBER_ID_TEST + "' ; " +
" SET @p3 = @insertResults'" + "' ; " +
"CALL PROC_MEMBER_INSERT(" +
" @p1 , " +
" @p2 , " +
" @p3 ');)";
query
.on('fields', function(fields, index) {
// the fields for the result rows that follow
})
.on('result', function(row, index) {
// index refers to the statement this result belongs to (starts at 0)
});
字段和行数组应该保留您的过程的值。
我无法对其进行测试，但如果字段数组中不存在输出参数，那么 - 如果您的逻辑与此符合，则可以添加另一个{{1 }}语句到您的过程调用，它将访问输出，如下所示。
SELECT
参考文献： https://github.com/felixge/node-mysql#multiple-statement-queries http://dev.mysql.com/doc/refman/5.5/en/stored-routines-syntax.html
答案 2 :(得分：0)
通过简单的双重选择解决了我的问题。
选择'插入'作为双重结果;
或
选择'失败'作为双重结果;
我没有使用或弄清楚如何获取out参数。下次我会花更多的时间在这个问题上。
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