Solution:Step 1: Analyze the domain's check conditionThe domain requires VALUE > 0, so zero is not allowed.Step 2: Determine the effect of inserting 0Since 0 does not satisfy the check, the insertion will fail with a constraint violation.Final Answer:Insertion fails due to check constraint violation

[Solved] Consider the domain:CREATE DOMAIN positive_int AS integer CHECK (VALUE > 0);What will be the result of inserting 0 into a column of type positive_int? | PostgreSQL

PostgreSQL - Advanced Features

Consider the domain:

CREATE DOMAIN positive_int AS integer CHECK (VALUE > 0);

What will be the result of inserting 0 into a column of type positive_int?

AInsertion fails due to type mismatch

BInsertion fails due to check constraint violation

CInsertion succeeds but stores NULL

DInsertion succeeds and stores 0

Step-by-Step Solution

Solution:

Step 1: Analyze the domain's check condition
The domain requires VALUE > 0, so zero is not allowed.
Step 2: Determine the effect of inserting 0
Since 0 does not satisfy the check, the insertion will fail with a constraint violation.
Final Answer:
Insertion fails due to check constraint violation -> Option B
Quick Check:
Check VALUE > 0 rejects 0 = Insert fails [OK]

Quick Trick: Check constraints reject values outside allowed range [OK]

Common Mistakes:

Thinking 0 passes > 0 check
Confusing type mismatch with constraint failure
Assuming NULL is stored on failure

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Consider the domain:

Step 1: Analyze the domain's check condition

Step 2: Determine the effect of inserting 0

Final Answer:

Quick Check:

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