oracle / oracle/nosql-java-sdk
Clarification Needed: Does Oracle NoSQL Database Support the LIKE Operator?
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Description
It is unclear whether the LIKE operator is supported in the Oracle NoSQL Database. I attempted to execute a query that appeared to follow the correct syntax but encountered an error message suggesting otherwise.
Example Query
SELECT * FROM jakartanosqltck
WHERE jakartanosqltck.entity = 'Animal'
AND jakartanosqltck.content.name LIKE ?
Error Message
The query fails with the following error:
java.lang.IllegalArgumentException: PREPARE: Illegal Argument: Table, index and unquoted field names may contain only alphanumeric values plus the character "_". Error: at (1, 104) mismatched input 'LIKE' expecting {<EOF>, AND, GROUP, IS, LIMIT, OFFSET, OR, ORDER, '[', '*', '.', '<', '<=', '>', '>=', '=', '!=', LT_ANY, LTE_ANY, GT_ANY, GTE_ANY, EQ_ANY, NEQ_ANY, '+', '-', '/', RDIV, '||'}, at line 1:104
rule stack: [parse]
Observations
- The error suggests that
LIKEis not recognized by the query parser. - The query follows the expected SQL syntax for
LIKEand uses a placeholder (?) for parameter binding. - There is no clear indication in the error message whether the issue lies with the
LIKEoperator itself or some other part of the query.
Request for Clarification
- Does Oracle NoSQL Database support the
LIKEoperator for string pattern matching? - If not, what is the recommended approach for performing pattern matching in queries? For example, should
REGEXP_LIKEbe used instead? - If
LIKEis supported, is there a specific syntax requirement or limitation that needs to be addressed?
Suggested Improvement
If LIKE is unsupported, it would be helpful for the error message to state this, such as: explicitly
The 'LIKE' operator is not supported in Oracle NoSQL Database. Consider using 'REGEXP_LIKE' for pattern matching.
PS: At the documentation I only find the regular expression: https://docs.oracle.com/en/database/other-databases/nosql-database/24.4/nsdev/regular-expression-conditions.html
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
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- Open a pull request that references the issue number.
Research direction
Start with the reported query, parser error, and the Oracle NoSQL regular-expression conditions documentation linked in the issue. Determine whether LIKE is supported, whether REGEXP_LIKE is the recommended alternative, and whether the documentation or error message should clarify the behavior. Done means the support status and any syntax limitation are clearly documented.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, sql
- Domain
- databases, documentation
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100