mysql count multiple columns in one query
mysql count multiple columns in one query:
SELECT
count(*) as count_rows,
count(col1) as count_1,
count(col2) as count_2,
count(distinct col1) as count_distinct_1,
count(distinct col2) as count_distinct_2,
count(distinct col1, col2) as count_distinct_1_2
FROM `table` ;how to select multiple columns from different tables in mysql
-- MySQL
-- t1 = table1
-- dt2 = column of table
SELECT t1.dt2, t2.dt4, t2.dt5, t2.dt3 #get dt3 data from table2
FROM table1 t1, table2 t2 -- Doesn't need to have t1, or t2
WHERE t1.dt2 = 'asd' AND t2.dt4 = 'qax' AND t2.dt5 = 456Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
