ER_INVALID_JSON_PATH_WILDCARD is raised when a JSON path in MySQL contains an illegal * or ** wildcard.
ER_INVALID_JSON_PATH_WILDCARD in MySQL appears when a JSON path includes an illegal * or ** wildcard. Remove or correctly position the wildcard (e.g., use [*] after an array) to resolve the error.
ER_INVALID_JSON_PATH_WILDCARD
ER_INVALID_JSON_PATH_WILDCARD is MySQL error 3149 thrown when a JSON path used in functions such as JSON_EXTRACT, JSON_SET, or JSON_REMOVE contains a * or ** wildcard in a position where MySQL does not allow it. The server rejects the statement before execution.
The error appears in MySQL 5.7.8 and later during compilation of any statement that references an illegal JSON path. It is common in SELECT, UPDATE, and INSERT commands that manipulate JSON columns.
An invalid path halts the entire statement, blocking inserts, updates, or reads that rely on JSON manipulation. Production code can break until the wildcard is removed or replaced.
The parser validates every path literal at compile time, so the error surfaces immediately in client applications, stored procedures, and triggers.
Always place * inside array brackets like [*]. Validate dynamically generated paths in application code and unit tests. Use Galaxy CI pipelines to run static checks that catch invalid wildcards before deployment.
Galaxy’s SQL editor validates JSON paths in real time and the AI copilot can instantly rewrite an illegal path, preventing runtime failures and speeding up debugging.
Using a trailing * after an object key, such as $.address* which violates the rule that wildcards belong only in array brackets.
Placing a recursive ** wildcard where only single-step navigation is allowed, for example $.**.name in MySQL 5.7.
Mixing dot notation and wildcards incorrectly, like $.items.*price which skips the required array brackets.
Generating JSON paths dynamically in application code without validating the resulting string.
ER_INVALID_JSON_PATH_CHARSET - Raised when a path string is not in utf8.
ER_INVALID_JSON_PATH - Generic invalid path error for other syntax issues.
ER_INVALID_JSON_PATH_AT_POSITION - Provides the exact character offset of the error.
No. MySQL only accepts the * wildcard inside an array subscript such as [*].
No. The rule remains, but JSON_TABLE offers alternative querying options.
No. The error occurs during parsing, before any index can be used.
Galaxy flags invalid JSON paths in real time and its AI copilot suggests corrected syntax automatically.
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