DROP DATABASE IF EXISTS mcol_5279;
CREATE DATABASE mcol_5279;
USE mcol_5279;
CREATE TABLE `dd`( `acct_sk` INT(11) UNSIGNED NOT NULL, `acct_id` VARCHAR(128) NOT NULL DEFAULT 'None', `db_source_sk` INT(11) UNSIGNED NOT NULL) ENGINE=Columnstore DEFAULT CHARSET=utf8mb4;
CREATE TABLE `ff` ( `db_source_sk` INT(11) UNSIGNED NOT NULL, `acct_id` VARCHAR(128) NOT NULL DEFAULT 'None', `acct_sk` INT(11) UNSIGNED NOT NULL DEFAULT 0 ) ENGINE=Columnstore DEFAULT CHARSET=utf8mb4;
INSERT INTO dd SELECT ROUND(RAND() * 10, 2), substring(MD5(RAND()),1,1), ROUND(RAND() * 100, 2) FROM seq_1_to_300000;
INSERT INTO ff SELECT ROUND(RAND() * 10, 2), substring(MD5(RAND()),1,1), ROUND(RAND() * 100, 2) FROM seq_1_to_300000;
SELECT * FROM (SELECT ff.acct_id, COUNT(1) FROM ff JOIN dd  ON ff.acct_sk =dd.acct_sk AND ff.db_source_sk =dd.db_source_sk GROUP BY ff.acct_id LIMIT 10)s LIMIT 0;
acct_id	COUNT(1)
DROP DATABASE mcol_5279;