How to diagnose and fix the 22032 invalid_json_text error code in Postgres.

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The 22032 error code in PostgreSQL indicates an “invalid JSON text” issue. This error occurs when you attempt to process a string that PostgreSQL expects to be valid JSON, but the string does not conform to JSON format standards. To diagnose and fix this issue, you should ensure that:

  1. JSON Format:
    The text is properly formatted as JSON. This means it should start with either a curly brace {} for objects or square brackets [] for arrays, and should follow the JSON syntax rules.
  2. Proper Quoting:
    In JSON, strings must be enclosed in double quotes " and not single quotes '. All property names should also be in double quotes.
  3. Escape Sequences:
    Special characters within JSON strings must be properly escaped. For example, use \" to represent a double quote within a string.
  4. Commas and Colons:
    Ensure that commas separate items in arrays and objects, and that colons : separate keys from values in objects.
  5. Valid Data Types:
    JSON supports specific data types: string, number, object, array, true, false, and null. Ensure that the values conform to these types.
  6. Use JSON Functions:
    PostgreSQL provides functions like json and jsonb to process JSON data. These functions will raise an error if the input is not valid JSON.

Here are some examples of diagnosing and fixing common JSON errors:

  • Example 1: Correcting Improper Quoting Incorrect JSON:
  {'key': 'value'}

Corrected JSON:

  {"key": "value"}

PostgreSQL code to store corrected JSON:

  INSERT INTO your_table(json_column) VALUES ('{"key": "value"}');
  • Example 2: Fixing Missing Commas Incorrect JSON:
  {"key1": "value1" "key2": "value2"}

Corrected JSON:

  {"key1": "value1", "key2": "value2"}

PostgreSQL code to store corrected JSON:

  INSERT INTO your_table(json_column) VALUES ('{"key1": "value1", "key2": "value2"}');
  • Example 3: Escaping Special Characters Incorrect JSON:
  {"key": "value with "double quotes""}

Corrected JSON:

  {"key": "value with \"double quotes\""}

PostgreSQL code to store corrected JSON:

  INSERT INTO your_table(json_column) VALUES ('{"key": "value with \"double quotes\""}');
  • Example 4: Ensuring Correct Data Types Incorrect JSON (numbers should not be quoted if you intend them to be JSON numbers):
  {"key": "123"}

Corrected JSON:

  {"key": 123}

PostgreSQL code to store corrected JSON:

  INSERT INTO your_table(json_column) VALUES ('{"key": 123}');
  • Example 5: Nested JSON Objects Incorrect JSON (missing comma between nested objects):
  {"key1": {"subkey1": "value1"} {"subkey2": "value2"}}

Corrected JSON:

  {"key1": {"subkey1": "value1", "subkey2": "value2"}}

PostgreSQL code to store corrected JSON:

  INSERT INTO your_table(json_column) VALUES ('{"key1": {"subkey1": "value1", "subkey2": "value2"}}');

If you’re having trouble with JSON data, consider using a JSON validator or formatter to check your data before inserting it into PostgreSQL. These tools can help you identify and fix formatting issues that might not be immediately apparent.

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