从计数查询中获取表名

Question

如何从计数查询中获取表名，我有多个查询，我需要从查询结果中获取表名，这是我的查询

$myquery = "select count(tb_id) as num_rows from table1; select count(tb1_id) from table2...";
if (myqli_multi_query($connection, $myquery){
..
$row = mysqli_fetch_assoc($result);
$num_rows = $row["num_rows"];
..
}

查询工作正常，因为我可以获取行数，但我无法将表名链接到行数（结果）

我试过这个，执行时没有错误，但无法获取表名

select count(tb_id) as num_rows, 'table1' as TableName from table1

Answer 1

您可以在查询中添加一个标识符，稍后可以参考。

$myquery = "select 'table1' as tablename, count(tb_id) as num_rows from table1; 
select 'table2' as tablename, count(tb1_id) as num_rows from table2;"
// and so on

Answer 2

只需将其添加到选择列或列名称中。

列名：

select count(tb_id) as table1_count from table1; select count(tb1_id) as table2_count from table2.

OR sep column：

(select count(tb_id) as num_rows, 'table1' as tablename from table1)
UNION
(select count(tb1_id), 'table2' from table2...)
UNION.... etc

编辑添加：你正在返回sep结果集;将UNION视为单个结果集。

Answer 3

您可以尝试mysqli_fetch_field

mysqli_fetch_field($result)->table;