Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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None
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None
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- mac OS 10.13.6 (openjdk version "11.0.6" 2020-01-14 LTS)
- centOS 7 with java 11
Description
We recently upgraded to MariaDB Connector/J (version 2.6.0) from version 1.5.x and found that our insert statement is breaking with "SQLSyntaxErrorException: unknown escape sequence" exception. The same insert works fine if we use mysql client
For example,
CREATE TABLE TEST_SYNTAX_ERROR(
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id INTEGER unsigned NOT NULL AUTO_INCREMENT,
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str_value MEDIUMTEXT CHARACTER SET utf8mb4 NOT NULL,
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json_value MEDIUMTEXT CHARACTER SET utf8mb4 NOT NULL
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PRIMARY KEY ( id )
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)
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and if try to insert a string for "str_value" with trailing '\' character followed by some json string for "json_value", we see the following exception.
INSERT INTO TEST_SYNTAX_ERROR(str_value, json_value) VALUES ('abc\\', '{"data": "test"}')
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Exception in thread "main" java.sql.SQLSyntaxErrorException: (conn=519) unknown escape sequence {"data": "test"}
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at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:62)
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at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:153)
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at org.mariadb.jdbc.MariaDbStatement.executeExceptionEpilogue(MariaDbStatement.java:273)
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at org.mariadb.jdbc.MariaDbStatement.executeInternal(MariaDbStatement.java:362)
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at org.mariadb.jdbc.MariaDbStatement.executeQuery(MariaDbStatement.java:610)
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at test.TestMariaDBSQLSyntaxException.testInsertString(TestMariaDBSQLSyntaxException.java:53)
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at test.TestMariaDBSQLSyntaxException.main(TestMariaDBSQLSyntaxException.java:71)
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Caused by: java.sql.SQLException: unknown escape sequence {"data": "test"}
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at org.mariadb.jdbc.internal.util.Utils.resolveEscapes(Utils.java:465)
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at org.mariadb.jdbc.internal.util.Utils.nativeSql(Utils.java:560)
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at org.mariadb.jdbc.MariaDbStatement.executeInternal(MariaDbStatement.java:357)
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... 3 more
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The main problem is with trailing '\' character in the first string and if the insert command got some column which can hold json string. If we remove the trailing '\' characters in the first string, the query passes.
Please find here attached the test case with the above issue. Our project is blocked by issue.
Attachments
Issue Links
- relates to
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CONJ-800 implement Statement setEscapeProcessing to avoid escape
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- Closed
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