Exercise

USING in action

In the previous exercises, you performed your joins using the ON keyword. Recall that when both the field names being joined on are the same, you can take advantage of the USING clause.

You'll now explore the languages table from our database. Which languages are official languages, and which ones are unofficial?

You'll employ USING to simplify your query as you explore this question.

Instructions

100 XP

Use the country code field to complete the INNER JOIN with USING; do not change any alias names.

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Instructions

Exercise