Commit 5d75407

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feat: update sql solution to lc problem: No.2020 (doocs#1901)

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Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -90,10 +90,10 @@ Streams table:`
`90`	`90`
`91`	`91`	```sql
`92`	`92`	`# Write your MySQL query statement below`
`93`		`-SELECT COUNT(DISTINCT sub.account_id) AS accounts_count`
	`93`	`+SELECT COUNT(sub.account_id) AS accounts_count`
`94`	`94`	`FROM`
`95`	`95`	`Subscriptions AS sub`
`96`		`- LEFT JOIN Streams AS ss ONsub.account_id=ss.account_id`
	`96`	`+ LEFT JOIN Streams USING (account_id)`
`97`	`97`	`WHERE`
`98`	`98`	`YEAR(start_date) <= 2021`
`99`	`99`	`AND YEAR(end_date) >= 2021`

Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -87,10 +87,10 @@ User 11 did not subscribe in 2021.`
`87`	`87`
`88`	`88`	```sql
`89`	`89`	`# Write your MySQL query statement below`
`90`		`-SELECT COUNT(DISTINCT sub.account_id) AS accounts_count`
	`90`	`+SELECT COUNT(sub.account_id) AS accounts_count`
`91`	`91`	`FROM`
`92`	`92`	`Subscriptions AS sub`
`93`		`- LEFT JOIN Streams AS ss ONsub.account_id=ss.account_id`
	`93`	`+ LEFT JOIN Streams USING (account_id)`
`94`	`94`	`WHERE`
`95`	`95`	`YEAR(start_date) <= 2021`
`96`	`96`	`AND YEAR(end_date) >= 2021`

Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,8 +1,8 @@`
`1`	`1`	`# Write your MySQL query statement below`
`2`		`-SELECT COUNT(DISTINCT sub.account_id) AS accounts_count`
	`2`	`+SELECT COUNT(sub.account_id) AS accounts_count`
`3`	`3`	`FROM`
`4`	`4`	`Subscriptions AS sub`
`5`		`- LEFT JOIN Streams AS ss ONsub.account_id=ss.account_id`
	`5`	`+ LEFT JOIN Streams USING (account_id)`
`6`	`6`	`WHERE`
`7`	`7`	`YEAR(start_date) <= 2021`
`8`	`8`	`AND YEAR(end_date) >= 2021`

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