I have a table as shown below.
**id | location**
1 | East Flow
2 | East Level
3 | East Pressure
I would like to convert the above table as follows using select statement in Mysql.
1 | 2 | 3
East Flow | East Level | East Pressure
I am using MySql 5.5 Please help.
Use a CASE expression if the count of Id column is fixed or known.
Query
select max(case when id = 1 then location end) as `1`,
max(case when id = 2 then location end) as `2`,
max(case when id = 3 then location end) as `3`
from your_table;
If the count of id column is unknown then you may need to use dynamic sql.
Query
select
group_concat(distinct
concat(
'max(case when id = ',
id,' then location end) as `', id,'`'
)
) into @sql
from your_table;
set @sql = concat('select ', @sql, ' from your_table');
prepare stmt from @sql;
execute stmt;
deallocate prepare stmt;
