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theory
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Let's add re2 as a recommended prereq:
--- a/META.json
+++ b/META.json
@@ -16,6 +16,9 @@
"runtime": {
"requires": {
"PostgreSQL": "13.0.0"
+ },
+ "recommends": {
+ "pgre2": "0.1.0"
}
}
},A few other suggestions; would be nice to simplify the expected test output.
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Integrate support for the [re2 extension], which adds ClickHouse- compatible RE2 matching functions to Postgres. This gives users the option to avoid the incompatibility between the ClickHouse & Postgres regex engines, avoiding the need to push down the Postgres regular expression functions with potentially incompatible expressions. [re2 extension]: https://github.com/ClickHouse/pg_re2 "pg_re2: ClickHouse-compatible regex functions using RE2"
theory
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Apr 16, 2026
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ClickHouse is working on a postgres extension using re2 for regex
This addresses incompatibility between CH & PG regex,
where engine depends on whether function is pushed down or not