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redshift json parse error: "end of input during string" - a comprehensive guide

the "end of input during string" error in amazon redshift when working with json data is a common headache. it indicates that redshift encountered the end of the json input string while it was expecting more characters within a string value. this often means that the json data is malformed, incomplete, or contains characters that need to be escaped. this comprehensive guide will break down the causes, provide solutions, and offer strategies for debugging this error.

*understanding the error*

imagine a json string like this:



notice the missing closing quote on the `name` field's value. when redshift attempts to parse this json, it starts reading the string value "john doe," but it encounters the end of the json input before it finds the expected closing quote (`"`). this triggers the "end of input during string" error.

*common causes and solutions*

here's a breakdown of the primary causes and how to address them:

1. *missing closing quotes:*

*cause:* the most frequent culprit. a string value within the json object lacks a closing double quote.
*solution:* carefully inspect the json string, especially around the location reported in any error message. ensure every string value is enclosed in double quotes.

*example:*

*incorrect:* `{"name": "john doe, "age": 30}`
*correct:* `{"name": "john doe", "age": 30}`

2. *unescaped special characters:*

*cause:* json uses special characters like double quotes (`"`), backslashes (`\`), and control characters (e.g., newline `\n`, tab `\t`) for specific purposes. if these characters appear within a string value, they need to be escaped with a backslash.
*solution:* properly escape any special characters in the string values.

*example:*

*incorrect:* `{"message": "this string contains a "quote""}`
*correct:* `{"message": "this string contains a \ ...

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