SQL syntax and aliasing — evaluate this claim about a SELECT.\n\nStatement under review:\nSELECT Number1 + Number 2 AS Total FROM NUMBER_TABLE;\n\nDoes this add two numbers from each row and list the result in a column named Total?

Introduction / Context:
This item tests your attention to SQL identifier rules and column aliasing. The example attempts to add two columns and present the sum as Total, but one identifier appears to contain a space, which is illegal unless quoted according to the DBMS’s rules.

Given Data / Assumptions:

• Columns are shown as Number1 and “Number 2”.
• Standard SQL requires quoting for identifiers with spaces or special characters.
• NUMBER_TABLE is the source table.

Concept / Approach:
An unquoted identifier cannot contain spaces in mainstream SQL dialects. If the actual column is named Number2 (no space), the correct expression is SELECT Number1 + Number2 AS Total FROM NUMBER_TABLE; If the column truly has a space in its name, it must be delimited, such as SELECT Number1 + "Number 2" AS Total FROM NUMBER_TABLE; (ANSI quoting) or SELECT Number1 + [Number 2] AS Total FROM NUMBER_TABLE; (SQL Server).

Step-by-Step Solution:

Verification / Alternative check:
Run the statement in a standards-compliant DBMS; it will raise a syntax error near the space unless the identifier is delimited.

Why Other Options Are Wrong:

• “Valid” ignores identifier rules.
• “Only in MySQL” or “AS fixes issues” are incorrect; MySQL also requires quoting for spaces, and AS only sets the alias.
• “Number as table and 2 as literal” does not match the syntax shown.

Common Pitfalls:
Using spaces in column names; forgetting that aliasing (AS) does not change identifier requirements.

Final Answer:
Invalid (as written, the identifier "Number 2" is not a valid unquoted column name)