[英]laravel mysql column for tablename
I have a laravel mysql query to select a column named title and the table name as Source我有一个 laravel mysql 查询来选择一个名为 title 的列和表名作为源
$query = DB::select('select title, "'.$table_name.'" as source from ' . $table_name);
but this returns an array, and I want to perform union query for the above query.但这会返回一个数组,我想对上述查询执行联合查询。 So I adopted the laravel DB::table()
所以我采用了laravel DB::table()
DB::table($table_name)->select('title, "'.$table_name.'" as source')
But the above query returns an error unknown column name .但是上面的查询返回一个错误unknown column name 。
SQLSTATE[42S22]: Column not found: 1054 Unknown column '"tablename"' in 'field list' (SQL: select
title
,"tablename"
assource
fromtablename
)SQLSTATE[42S22]:未找到列:1054“字段列表”中的未知列“表名”(SQL:选择
title
,"tablename"
作为tablename
source
)
I just want to add another field named source and put the table name in all rows.我只想添加另一个名为 source 的字段并将表名放在所有行中。
I repeat the same for number of tables and finally sort them before rendering.我对表的数量重复相同的操作,最后在渲染之前对它们进行排序。 Please help me out.
请帮帮我。
Thank you in advance.先感谢您。
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