Solution:Step 1: Count rows in each tableColors has 2 rows, Shapes has 3 rows.Step 2: Calculate CROSS JOIN resultTotal rows = 2 * 3 = 6, each color paired with each shape.Final Answer:6 rows combining each color with each shape -> Option AQuick Check:Output rows = 2 colors * 3 shapes = 6 [OK]

[Solved] Given two tables:Colors:id | color1 | Red2 | BlueShapes:id | shape1 | Circle2 | Square3 | TriangleWhat will be the output of the query:SELECT color, shape FROM Colors CROSS JOIN Shapes ORDER BY... | PostgreSQL

PostgreSQL - Joins in PostgreSQL

A6 rows combining each color with each shape

B5 rows combining colors and shapes

C3 rows with matching ids only

D2 rows with colors only

Step-by-Step Solution

Solution:

Step 1: Count rows in each table
Colors has 2 rows, Shapes has 3 rows.
Step 2: Calculate CROSS JOIN result
Total rows = 2 * 3 = 6, each color paired with each shape.
Final Answer:
6 rows combining each color with each shape -> Option A
Quick Check:
Output rows = 2 colors * 3 shapes = 6 [OK]

Quick Trick: CROSS JOIN multiplies row counts for total output rows [OK]

Common Mistakes:

Assuming join filters rows by id
Counting only matching ids
Ignoring multiplication of rows

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Given two tables:

Step 1: Count rows in each table

Step 2: Calculate CROSS JOIN result

Final Answer:

Quick Check:

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