MySQL 5.7 Reference Manual / ... / Problems with Column Aliases B.3.4.4 Problems with Column Aliases An alias can be used in a query select list to give a column a different name. You can use the alias in GROUP BY, ORDER BY, or HAVING clauses to refer to the column: ...
MySQL 8.0 Reference Manual / ... / Problems with Column Aliases B.3.4.4 Problems with Column Aliases An alias can be used in a query select list to give a column a different name. You can use the alias in GROUP BY, ORDER BY, or HAVING clauses to refer to the column: ...
Expression (Projection) Header: column_a Nullable(String) column_b UInt64 "Actions: INPUT : 0 -> multiIf(in(yuyi_xxx2, '张三'), 'xxx1', in(yuyi_xxx2, '李四'), 'xxx2', NULL) Nullable(String) : 0" INPUT : 1 -> count(yuyi_xxx1) UInt64 : 1 " ALIAS multiIf(in(yuyi_xxx2...
mysql - adding alias columns as new column I have the following mysql query.. select x.timest, max(case when xdevloc='outside' then x.value end) as outside, max(case when x.devloc='hvac_main_return' then x.value end) as hvac_main_return, max(case when x.devloc='hvac_...
MySQL-Select语句高级应用 中where子句使用 SELECT *|{[DISTINCT] column|select_expr [alias], ...]}...WHERE子句跟在FROM子句后面,不能在WHERE子句中使用列别名。 【示例一】where字句的基本使用 SELECT * FROM world...语法: limit 获取的行数> [OFFSET 的行数>] 或者 limit [...
mysql>SELECT t, srcuser, dstuser, size/1024 AS kilobytes->FROM mail WHERE kilobytes > 500;ERROR 1054 (42S22): Unknown column 'kilobytes' in 'where clause' The error occurs because an alias names anoutputcolumn, whereas aWHEREclause operates oninputcolumns to determine which rows to select ...
(id0__), Mysql type: 3 Somehow the first alias is being lostHow to repeat:CREATE TABLE `property` ( `value_type` char(1) NOT NULL default '', `id` int(11) NOT NULL auto_increment, `deleted_version` int(11) default NULL, `value_analyzed` varchar(255) default NULL, `value_text...
Comments in front of SELECT expression appear as part of column alias Submitted:20 Dec 2006 20:31Modified:11 Dec 2007 0:15 Reporter:Philip StoevEmail Updates: Status:Not a BugImpact on me: None Category:MySQL Server: ParserSeverity:S2 (Serious)...
语法如下:SELECT column1 AS alias1, column2 AS alias2, ...使用WHERE子句WHERE子句用于筛选符合条件的行,即从数据表中过滤出符合条件的数据。语法如下:SELECT column1, column2, ...语法如下:SELECT column1, column2, ...语法如下:SELECT column1, column2, ... 49940 Oracle ...
The problem is the mysql_field_name is returning the alias. So, when I run a query like SELECT Song.Title as "Song Name", the id is storing 'Song.Song Name' in the attribute, and the next time I build the SELECT variable, it's wrong. ...