cloud-fan commented on code in PR #43801:
URL: https://github.com/apache/spark/pull/43801#discussion_r1400437832
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sql/catalyst/src/main/java/org/apache/spark/sql/connector/util/V2ExpressionSQLBuilder.java:
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@@ -48,6 +48,26 @@
*/
public class V2ExpressionSQLBuilder {
+ protected String escapeSpecialCharsForLikePattern(String str) {
+ StringBuilder builder = new StringBuilder();
+
+ for (char c : str.toCharArray()) {
+ switch (c) {
+ case '_':
+ builder.append("\\_");
+ break;
+ case '%':
+ builder.append("\\%");
+ break;
+ // TODO Support for escaping more special characters
Review Comment:
It's not a TODO. We should document `escapeSpecialCharsForLikePattern` and
ask dialects to override it if they have more special chars other than `_` and
`%`.
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