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JOINs

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apurvis@lumoslabs.com 2016-04-07 19:12:43 -04:00
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@ -88,7 +88,7 @@ FROM staff;
```sql ```sql
SELECT first_name AS fn SELECT first_name AS fn
FROM staff AS s1 FROM staff AS s1
JOIN students AS s2 JOIN students AS s2
ON s2.mentor_id = s1.staff_num; ON s2.mentor_id = s1.staff_num;
``` ```
```sql ```sql
@ -220,8 +220,7 @@ This allows the reader to quickly scan for the important building blocks of the
#### Joins #### Joins
Joins should be indented to the other side of the river and grouped with a new Joins should be indented 2 spaces right from the `FROM` keyword
line where necessary.
Single line `JOIN`s are fine for simple situations Single line `JOIN`s are fine for simple situations
@ -250,9 +249,7 @@ Indent them until the closing parentheses.
WITH my_tmp_table AS ( WITH my_tmp_table AS (
SELECT r.last_name SELECT r.last_name
FROM riders AS r FROM riders AS r
INNER JOIN bikes b INNER JOIN bikes b ON r.bike_vin_num = b.vin_num
ON r.bike_vin_num = b.vin_num
AND r.bike_lane = r.lane
) )
SELECT * SELECT *