Fix boolean coercion from numeric values for wildcard index queries (#5269)

integ-test/src/test/java/org/opensearch/sql/ppl/DataTypeIT.java

@@ -145,6 +145,47 @@ public void testNumericFieldFromString() throws Exception {
     client().performRequest(deleteRequest);
   }
 
+  @Test
+  public void testBooleanFieldFromNumberAcrossWildcardIndices() throws Exception {
+    // Reproduce issue #5269: querying across indices where same field has conflicting types
+    // (boolean vs text) and the text-typed index stores a numeric value like 0.
+    String indexBool = "repro_bool_test_bb";
+    String indexText = "repro_bool_test_aa";
+
+    try {
+      // Create index with boolean mapping
+      Request createBool = new Request("PUT", "/" + indexBool);
+      createBool.setJsonEntity(
+          "{\"mappings\":{\"properties\":{\"flag\":{\"type\":\"boolean\"},"
+              + "\"startTime\":{\"type\":\"date_nanos\"}}}}");
+      client().performRequest(createBool);
+
+      // Create index with text mapping
+      Request createText = new Request("PUT", "/" + indexText);
+      createText.setJsonEntity(
+          "{\"mappings\":{\"properties\":{\"flag\":{\"type\":\"text\"},"
+              + "\"startTime\":{\"type\":\"date_nanos\"}}}}");
+      client().performRequest(createText);
+
+      // Insert boolean value into boolean-typed index
+      Request insertBool = new Request("PUT", "/" + indexBool + "/_doc/1?refresh=true");
+      insertBool.setJsonEntity("{\"startTime\":\"2026-03-25T20:25:00.000Z\",\"flag\":false}");
+      client().performRequest(insertBool);
+
+      // Insert numeric value into text-typed index
+      Request insertText = new Request("PUT", "/" + indexText + "/_doc/1?refresh=true");
+      insertText.setJsonEntity("{\"startTime\":\"2026-03-24T20:25:00.000Z\",\"flag\":0}");
+      client().performRequest(insertText);
+
+      // Query across both indices with wildcard — should not throw an error
+      JSONObject result = executeQuery("source=repro_bool_test_* | fields flag");
+      assertEquals(2, result.getJSONArray("datarows").length());
+    } finally {
+      client().performRequest(new Request("DELETE", "/" + indexBool));
+      client().performRequest(new Request("DELETE", "/" + indexText));
+    }
+  }
+
   @Test
   public void testBooleanFieldFromString() throws Exception {
     final int docId = 2;

integ-test/src/yamlRestTest/resources/rest-api-spec/test/issues/5269.yml

@@ -0,0 +1,63 @@
+setup:
+  - do:
+      indices.create:
+        index: issue5269_bool
+        body:
+          settings:
+            number_of_shards: 1
+            number_of_replicas: 0
+          mappings:
+            properties:
+              flag:
+                type: boolean
+              startTime:
+                type: date_nanos
+
+  - do:
+      indices.create:
+        index: issue5269_text
+        body:
+          settings:
+            number_of_shards: 1
+            number_of_replicas: 0
+          mappings:
+            properties:
+              flag:
+                type: text
+              startTime:
+                type: date_nanos
+
+  - do:
+      bulk:
+        refresh: true
+        body:
+          - '{"index": {"_index": "issue5269_bool", "_id": "1"}}'
+          - '{"startTime": "2026-03-25T20:25:00.000Z", "flag": false}'
+          - '{"index": {"_index": "issue5269_text", "_id": "1"}}'
+          - '{"startTime": "2026-03-24T20:25:00.000Z", "flag": 0}'
+
+---
+teardown:
+  - do:
+      indices.delete:
+        index: issue5269_bool
+        ignore_unavailable: true
+  - do:
+      indices.delete:
+        index: issue5269_text
+        ignore_unavailable: true
+
+---
+"Issue 5269: PPL wildcard query across indices with boolean/text mapping conflict should not error":
+  - skip:
+      features:
+        - headers
+  - do:
+      headers:
+        Content-Type: 'application/json'
+      ppl:
+        body:
+          query: source=issue5269_* | fields flag
+
+  - match: { total: 2 }
+  - length: { datarows: 2 }

opensearch/src/main/java/org/opensearch/sql/opensearch/data/utils/OpenSearchJsonContent.java

@@ -212,6 +212,8 @@ private boolean parseBooleanValue(JsonNode node) {
       return node.booleanValue();
     } else if (node.isTextual()) {
       return Boolean.parseBoolean(node.textValue());
+    } else if (node.isNumber()) {
+      return node.intValue() != 0;
     } else {
       if (LOG.isDebugEnabled()) {
         LOG.debug("node '{}' must be a boolean", node);

opensearch/src/test/java/org/opensearch/sql/opensearch/data/value/OpenSearchExprValueFactoryTest.java

@@ -234,6 +234,9 @@ public void constructIp() {
   public void constructBoolean() {
     assertAll(
         () -> assertEquals(booleanValue(true), tupleValue("{\"boolV\":true}").get("boolV")),
+        () -> assertEquals(booleanValue(false), tupleValue("{\"boolV\":false}").get("boolV")),
+        () -> assertEquals(booleanValue(true), tupleValue("{\"boolV\":1}").get("boolV")),
+        () -> assertEquals(booleanValue(false), tupleValue("{\"boolV\":0}").get("boolV")),
         () -> assertEquals(booleanValue(true), constructFromObject("boolV", true)),
         () -> assertEquals(booleanValue(true), constructFromObject("boolV", "true")),
         () -> assertEquals(booleanValue(true), constructFromObject("boolV", 1)),