命令在调用存储过程时不同步命令Mysql

Question

我有两个存储过程，我需要将记录分页（比如说选择每个下一个n记录）到第一个选择所有匹配记录的记录。

CREATE PROCEDURE `trans_all`(IN varphone VARCHAR(15)) 
BEGIN 
    Select 
    loans.amt, 
    loans.date, 
    loans.pay_period, 
    borrower.phone As borrower_phone, 
    borrower.name As borrower_name, 
    lender.phone As lender_phone, 
    lender.name As lender_name, 
From 
    loans Left Join 
    users borrower On borrower.id = loans.borrower_id Left Join 
    users lender On lender.id = loans.lender_id 
Where 
    (lender.phone = varphone) or (borrower.phone = varphone); 
END 

然后我得到PHP中的计数;这样

$result = $mysqli->query(sprintf("call trans_all('%s')",$phone)); 
$num_recs = $result->num_rows; 

然后我需要选择精确的记录，以我这样做呢

$result = $mysqli->query(sprintf("call trans_history('%s','%s','%s')",$phone,$start,$limit)); 

$row = $result->fetch_assoc(); // this like gives the error Commands out of sync; you can't run this command now 

第二个存储过程是

CREATE PROCEDURE `trans_history`(IN varphone VARCHAR(15), IN page INT, IN items INT) 
BEGIN 
    Select 
    loans.amt, 
    loans.date, 
    loans.pay_period, 
    borrower.phone As borrower_phone, 
    borrower.name As borrower_name, 
    lender.phone As lender_phone, 
    lender.name As lender_name, 
From 
    loans Left Join 
    users borrower On borrower.id = loans.borrower_id Left Join 
    users lender On lender.id = loans.lender_id 
Where 
    (lender.phone = varphone) or (borrower.phone = varphone) LIMIT page , items; 
END 

什么可能会导致此错误？

Answer 1

SP返回包含状态的第二个结果集。在进行后续查询之前，您需要使用next_result()。

$result = $mysqli->query(sprintf("call trans_all('%s')",$phone)); 
$num_recs = $result->num_rows; 
$result->close(); 
$mysqli->next_result(); // <- you need this before you make another query 

//Then make call second SP 
$result = $mysqli->query(sprintf("call trans_history('%s','%s','%s')",$phone,$start,$limit)); 
$row = $result->fetch_assoc(); 
$result->close(); 
$mysqli->next_result();