elastic · luigidellaquila · Sep 9, 2025 · Sep 2, 2025 · Sep 3, 2025 · Sep 3, 2025
diff --git a/docs/changelog/134029.yaml b/docs/changelog/134029.yaml
@@ -0,0 +1,5 @@
+pr: 134029
+summary: Add SET instruction
+area: ES|QL
+type: enhancement
+issues: []
diff --git a/x-pack/plugin/esql/src/main/antlr/EsqlBaseLexer.g4 b/x-pack/plugin/esql/src/main/antlr/EsqlBaseLexer.g4
@@ -66,6 +66,7 @@ import ChangePoint,
        MvExpand,
        Project,
        Rename,
+       Set,
        Show,
        UnknownCommand;
 

diff --git a/x-pack/plugin/esql/src/main/antlr/EsqlBaseLexer.tokens b/x-pack/plugin/esql/src/main/antlr/EsqlBaseLexer.tokens
diff --git a/x-pack/plugin/esql/src/main/antlr/EsqlBaseParser.g4 b/x-pack/plugin/esql/src/main/antlr/EsqlBaseParser.g4
@@ -23,6 +23,11 @@ options {
 import Expression,
        Join;
 
+statements
+    : {this.isDevVersion()}? setCommand+ singleStatement EOF
+    | singleStatement EOF
+    ;
+
 singleStatement
     : query EOF
     ;
@@ -333,3 +338,16 @@ insistCommand
 fuseCommand
     : DEV_FUSE
     ;
+
+setCommand
+    : SET setFields SEMICOLON
+    ;
+
+setFields
+    : setField (COMMA setField)*
+    ;
+
+setField
+    : identifier ASSIGN constant
+    ;
+
-Original file line number
+Diff line change
@@ Expand Up / @@ -66,6 +66,7 @@ import ChangePoint, @@
            MvExpand,
            Project,
            Rename,
+           Set,
            Show,
            UnknownCommand;
@@ Expand Down @@