Web Reference: Nov 20, 2025 · One of the most common errors encountered when inserting array data is: ERROR: array value must start with "{" or dimension information. This error occurs when PostgreSQL expects an array input but receives data in an unrecognized format. This error occurs when you use incorrect syntax like square brackets [] or omit the opening brace entirely. Fix it by using proper PostgreSQL array syntax or the ARRAY constructor. Jul 20, 2015 · 65 Your column username seems to be an array type, so the literal 'mahman' is not valid input for it. It would have to be '{mahman}':
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Array : Cannot INSERT: ERROR: array value must start with "{" or dimension information
Celebrity Array : Value error: Input arrays should have the same number of samples as target arrays. Found 160 Wealth
Array : Value error: Input arrays should have the same number of samples as target arrays. Found 160
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How to Fix the Values Must Be a 1D Array Problem in Pandas
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Array : PostgreSQL - array value must start with "{" or dimension information
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Common Array Errors -- C++ Arrays for Beginners [Part 4]
expression outputs an array error message when not an array value Net Worth
expression outputs an array error message when not an array value
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How to Handle ValueError: All Arrays Must Be of the Same Length in Python
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🔥Boy Accidentally Unlocks a Spiritual Farm Space, Where All Plants He Grows Mature at 100x Speed!
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You can't change part of an array - Microsoft Excel Dynamic Array issue fixed - Super Easy

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Understanding the "C++ Array Expression Must Have a Constant Value" Error Details
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