如何在MySQL中合并表 [英] How to merge table in MySQL

问题描述

我只想将这些表合并/组合成一个查询，但它不起作用.实际上有太多的表和列，但对于这个例子，我只是确定了.

I just want to merge/combine this tables into one query, but it not working. Actually there is too many tables and column but for this example I just put certain only.

$insertSQL_sr1 = "INSERT INTO sr1_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr1`";

$insertSQL_sr2 = "INSERT INTO sr2_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr2`";

$insertSQL_sr3 = "INSERT INTO sr3_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr3`";

$insertSQL_full = $insertSQL_sr1.";".$insertSQL_sr2.";".$insertSQL_sr3;

mysql_query($insertSQL_full);

mysql_select_db($database_pods, $pods);
  $Result1 = mysql_query($insertSQL_full, $pods) or die(mysql_error());

出现错误:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO sr2_full (`date`, `total_pending`, `appt_today`, `percent_appt_today' at line 1

我的第二次

$insertSQL = "INSERT INTO sr1_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr1`; INSERT INTO sr2_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr2`; INSERT INTO sr3_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr3`";

mysql_select_db($database_pods, $pods);
  $Result1 = mysql_query($insertSQL, $pods) or die(mysql_error());

出现错误:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO sr2_full (`date`, `total_pending`, `appt_today`, `percent_appt_today' at line 1

推荐答案

$insertSQL1 = "INSERT INTO sr1_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr1`";

$insertSQL2 = "INSERT INTO sr2_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr2`";

$insertSQL3 = "INSERT INTO sr3_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr3`";

添加;来组合两条SQL语句.

Add ; to combine two SQL statements.

您可以像这样组合这些查询.

You can combine these queries like this.

$insertSQL_Single = $insertSQL1.";".$insertSQL2.";".$insertSQL3;

结果查询:

INSERT INTO sr1_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr1`;INSERT INTO sr2_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr2`;INSERT INTO sr3_full (`date`, `total_pending`, `appt_today`, `percent_appt_today`) SELECT `date`, `total_pending`, `appt_today`, `percent_appt_today` FROM `sr3`

我已经用 PhpMyAdmin 试过了.查询成功

I've tried this using PhpMyAdmin. query was success

它不能被 mysql_query() 执行.让我们找到一些其他的技巧.我们需要单独执行它.

it can't be executed by mysql_query(). lets find some other tricks. we need to execute it separate.

使用mysqli来执行这个

Use mysqli for executing this

$mysqli = new mysqli("host","username","password", "databasename");
if (!$mysqli->multi_query($insertSQL_Single)) {
    echo "Multi query failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
else
{
    echo "success";
}

这篇关于如何在MySQL中合并表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！