Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18451#discussion_r125174262
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/jdbc/JdbcDialects.scala ---
@@ -124,6 +126,29 @@ abstract class JdbcDialect extends Serializable {
}
/**
+ * Make string literal in SQL valid.
+ * @param value The string to be escaped.
+ * @return Escaped string.
+ */
+ @Since("2.3.0")
+ protected[jdbc] def escapeSql(value: String): String =
+ if (value == null) null else StringUtils.replace(value, "'", "''")
--- End diff --
So far, it only covers single quotes. Actually, this is not complete. We
need to improve it in the future PRs. If you have time, feel free to submit PRs.
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