Peter Toth created SPARK-57960:
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Summary: Escape table and schema identifiers in JDBC dialect index
metadata queries
Key: SPARK-57960
URL: https://issues.apache.org/jira/browse/SPARK-57960
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 5.0.0
Reporter: Peter Toth
PostgresDialect.indexExists and H2Dialect.indexExists/listIndexes embed the
table (and, for H2, schema) name into a SQL string literal in the pg_indexes /
INFORMATION_SCHEMA lookup query without escaping. A table or schema name
containing a single quote therefore produces a malformed query that fails with
a syntax error. This is inconsistent with the index name in the same methods,
which is already escaped via escapeSql (SPARK-57446 / SPARK-57447).
Fix: apply escapeSql to the table/schema identifiers at these sites so
quote-containing identifiers work correctly. (MySQLDialect.indexExists places
the table in identifier position via quoteIdentifier and is already correct.)
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