I have a query which returns two rows of data as count. I want to find sum of the column values. My sql: I have tried using Select Sum(my above query) but I am getting error. I just need some of above values. Answer Can grab both result sets in a single query:
Tag: mysql
How to get file extension of file as a result of sql query?
I have a table named datas and I’m executing a query like this: SELECT linkurl AS DOWNLOADURL, lastrevlevel AS VERSION, code AS DESCRIPTION, created AS RELEASEDATE, name …
How to convert all tables in database to one collation?
I’m getting error: Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation ‘=’” I tried changing both tables manually to utf8_general_ci,IMPLICIT but I’m still getting the error. Is there a way to convert all tables to utf8_general_ci,IMPLICIT …
SQL query with avg and group by
I have some problems with writing a SQL query for MySQL. I have a table with the following structure: mysql> select id, pass, val from data_r1 limit 10; +————+————–+—————…
Alter SQL table – allow NULL column value
Initially, the table “MyTable” has been defined in the following way: CREATE TABLE IF NOT EXISTS `MyTable` ( `Col1` smallint(6) NOT NULL AUTO_INCREMENT, `Col2` smallint(6) DEFAULT NULL, `Col3` …
Formatting column in SQL
I would like to insert the pipe character | in a column to separate two sections of the output. Is there a way to put one in every row of a column as long as there is data in that row? Answer
Why am I getting an error in this create table script? [closed]
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Using group by on two fields and count in SQL
I have a table in my mysql db that has two columns: group and subgroup. See below. group, subGroup grp-A, sub-A grp-A, sub-A grp-A, sub-B grp-B, sub-A grp-B, sub-B grp-B, sub-B I am …
CREATE TYPE on MySQL
I couln’t create a new data type on MySQL. Query is given below How can I do that on MySQL Answer You cannot. MySQL doesn’t have user-defined types. (At least, not in current versions.)
Mysql queries giving error after upgrading
why this simple query not working. I know it was OK before I upgraded my mysql version. i know there are some syntax changes in new version that I done. but this is simple query no join, but not working. Please help me. EDIT: Upgraded from mysql4 to mysql5 and error is ‘syntax error’ Answer I thin…