ES|QL: Fix usage of IN operator with TEXT fields (#106654)

docs/changelog/106654.yaml

@@ -0,0 +1,6 @@
+pr: 106654
+summary: "ES|QL: Fix usage of IN operator with TEXT fields"
+area: ES|QL
+type: bug
+issues:
+ - 105379

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/predicate/operator/comparison/In.java

@@ -7,10 +7,10 @@
 
 package org.elasticsearch.xpack.esql.expression.predicate.operator.comparison;
 
+import org.elasticsearch.xpack.esql.expression.EsqlTypeResolutions;
 import org.elasticsearch.xpack.esql.type.EsqlDataTypes;
 import org.elasticsearch.xpack.ql.expression.Expression;
 import org.elasticsearch.xpack.ql.expression.Expressions;
-import org.elasticsearch.xpack.ql.expression.TypeResolutions;
 import org.elasticsearch.xpack.ql.expression.predicate.operator.comparison.InProcessor;
 import org.elasticsearch.xpack.ql.tree.NodeInfo;
 import org.elasticsearch.xpack.ql.tree.Source;
@@ -67,7 +67,7 @@ public class In extends org.elasticsearch.xpack.ql.expression.predicate.operator
 
     @Override
     protected TypeResolution resolveType() { // TODO: move the foldability check from QL's In to SQL's and remove this method
-        TypeResolution resolution = TypeResolutions.isExact(value(), functionName(), DEFAULT);
+        TypeResolution resolution = EsqlTypeResolutions.isExact(value(), functionName(), DEFAULT);
         if (resolution.unresolved()) {
             return resolution;
         }

x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/analysis/AnalyzerTests.java

@@ -1775,6 +1775,32 @@ public class AnalyzerTests extends ESTestCase {
         );
     }
 
+    public void testInOnText() {
+        assertProjectionWithMapping("""
+            from a_index
+            | eval text in (\"a\", \"b\", \"c\")
+            | keep text
+            """, "mapping-multi-field-variation.json", "text");
+
+        assertProjectionWithMapping("""
+            from a_index
+            | eval text in (\"a\", \"b\", \"c\", text)
+            | keep text
+            """, "mapping-multi-field-variation.json", "text");
+
+        assertProjectionWithMapping("""
+            from a_index
+            | eval text not in (\"a\", \"b\", \"c\")
+            | keep text
+            """, "mapping-multi-field-variation.json", "text");
+
+        assertProjectionWithMapping("""
+            from a_index
+            | eval text not in (\"a\", \"b\", \"c\", text)
+            | keep text
+            """, "mapping-multi-field-variation.json", "text");
+    }
+
     private void verifyUnsupported(String query, String errorMessage) {
         verifyUnsupported(query, errorMessage, "mapping-multi-field-variation.json");
     }

x-pack/plugin/src/yamlRestTest/resources/rest-api-spec/test/esql/80_text.yml

@@ -121,6 +121,82 @@ setup:
   - length: { values: 1 }
   - match: { values.0: [ 20, "John", "Payroll Specialist", "baz"] }
 
+---
+"IN on text":
+  - skip:
+      version: " - 8.13.99"
+      reason: "IN on text fixed in v 8.14"
+      features: allowed_warnings_regex
+  - do:
+      allowed_warnings_regex:
+        - "No limit defined, adding default limit of \\[.*\\]"
+      esql.query:
+        body:
+          query: 'from test | where tag IN ("abc", "baz") | keep emp_no, name, job, tag'
+
+  - match: { columns.0.name: "emp_no" }
+  - match: { columns.0.type: "long" }
+  - match: { columns.1.name: "name" }
+  - match: { columns.1.type: "keyword" }
+  - match: { columns.2.name: "job" }
+  - match: { columns.2.type: "text" }
+  - match: { columns.3.name: "tag" }
+  - match: { columns.3.type: "text" }
+
+  - length: { values: 1 }
+  - match: { values.0: [ 20, "John", "Payroll Specialist", "baz"] }
+
+---
+"IN on text and itself":
+  - skip:
+      version: " - 8.13.99"
+      reason: "IN on text fixed in v 8.14"
+      features: allowed_warnings_regex
+  - do:
+      allowed_warnings_regex:
+        - "No limit defined, adding default limit of \\[.*\\]"
+      esql.query:
+        body:
+          query: 'from test | where tag IN ("abc", tag) | keep emp_no, name, job, tag | sort emp_no'
+
+  - match: { columns.0.name: "emp_no" }
+  - match: { columns.0.type: "long" }
+  - match: { columns.1.name: "name" }
+  - match: { columns.1.type: "keyword" }
+  - match: { columns.2.name: "job" }
+  - match: { columns.2.type: "text" }
+  - match: { columns.3.name: "tag" }
+  - match: { columns.3.type: "text" }
+
+  - length: { values: 2 }
+  - match: { values.0: [ 10, "Jenny", "IT Director", "foo bar"] }
+  - match: { values.1: [ 20, "John", "Payroll Specialist", "baz"] }
+
+---
+"NOT IN on text":
+  - skip:
+      version: " - 8.13.99"
+      reason: "IN on text fixed in v 8.14"
+      features: allowed_warnings_regex
+  - do:
+      allowed_warnings_regex:
+        - "No limit defined, adding default limit of \\[.*\\]"
+      esql.query:
+        body:
+          query: 'from test | where tag NOT IN ("abc", "baz") | keep emp_no, name, job, tag'
+
+  - match: { columns.0.name: "emp_no" }
+  - match: { columns.0.type: "long" }
+  - match: { columns.1.name: "name" }
+  - match: { columns.1.type: "keyword" }
+  - match: { columns.2.name: "job" }
+  - match: { columns.2.type: "text" }
+  - match: { columns.3.name: "tag" }
+  - match: { columns.3.type: "text" }
+
+  - length: { values: 1 }
+  - match: { values.0: [ 10, "Jenny", "IT Director", "foo bar"] }
+
 ---
 "eval and filter text":
   - do: