mysql-error-1054

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"#1054 - Unknown column" error when alias is used with-in the query?

While using 开发者_如何学Pythonthe following query, I get the error #1054 - Unknown column \'plus\' in \'field list\'[详细]

2023-04-13 03:29 分类：问答
Getting confused by MySQL subqueries

I\'m trying to learn how to do subqueries, and I\'m really confused at what\'s wrong with this simple example.[详细]

2023-03-28 14:39 分类：问答
I need to search with multi variable and sort

I can search multiple value with mysql. I need to implement SORT BY on it This is my coding which is working perfect[详细]

2023-03-26 13:51 分类：问答
using subqueries in main query

I have done like subquery like this but it was giving error SELECT sourceTable3.Total, (sourcetable3.datediff-1) as diff,[详细]

2023-03-18 10:03 分类：问答
trying to get the number of months

membershiptable membership_startdate (2011-01-12) membership_dueday values like only dates (09,08,07) member_id[详细]

2023-03-17 23:15 分类：问答
Failed mysql date query

I want to delete rows from a table that has a column more than 7200 secs old. The Query mysql_query(\"delete from logged where DATE_ADD ( log, INTERVAL $this->loginDuration SECOND) < NOW()\",$[详细]

2023-03-17 21:31 分类：问答
What is wrong with this SQL? [closed]

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time,or an extraordinarily narrow situation that is not generally applic[详细]

2023-03-15 16:06 分类：问答
How to refer 'decider' in the where clause from the following mysql query?

How to refer \'decider\' in the where clause from the followi开发者_开发百科ng mysql query? SELECT *,[详细]

2023-03-10 01:41 分类：问答
Can I use a column I have selected later in a query?

Imagine this query... SELECT `id`, `hits` + `other_hits` AS `total_hits` FROM `something` WHERE `hits` + `other_hits` > 30[详细]

2023-03-09 20:48 分类：问答
Can I reuse a calculated field in a SELECT query?

Is there a way to reuse a calculated field within a mysql statement. I get the error \"unknown开发者_JS百科 column total_sale\" for:[详细]

2023-03-07 18:32 分类：问答