diff --git a/package.json b/package.json
index f032e49cf..e7152eeba 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
     "scripts": {
         "start:api": "yarn workspace @dbgate/api start",
         "start:web": "yarn workspace @dbgate/web start",
+        "start:sqltree": "yarn workspace @dbgate/sqltree start",
         "start": "concurrently --kill-others-on-fail \"yarn start:api\" \"yarn start:web\"",
 
         "ts:api": "yarn workspace @dbgate/api ts",
diff --git a/packages/api/package.json b/packages/api/package.json
index ac5367336..8ea1a444c 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -17,7 +17,8 @@
     "pg": "^7.17.0",
     "socket.io": "^2.3.0",
     "uuid": "^3.4.0",
-    "@dbgate/engines": "^0.1.0"
+    "@dbgate/engines": "^0.1.0",
+    "@dbgate/sqltree": "^0.1.0"
   },
   "scripts": {
     "start": "nodemon src/index.js",
diff --git a/packages/api/src/dmlf/command.js b/packages/api/src/dmlf/command.js
deleted file mode 100644
index 297d6988c..000000000
--- a/packages/api/src/dmlf/command.js
+++ /dev/null
@@ -1,13 +0,0 @@
-class Command {
-  /** @param driver {import('@dbgate/types').EngineDriver}  */
-  toSql(driver) {
-    const dumper = driver.createDumper();
-    this.dumpSql(dumper);
-    return dumper.s;
-  }
-
-  /** @param dumper {import('@dbgate/types').SqlDumper}  */
-  dumpSql(dumper) {}
-}
-
-module.exports = Command;
diff --git a/packages/api/src/dmlf/select.js b/packages/api/src/dmlf/select.js
deleted file mode 100644
index 72153bafd..000000000
--- a/packages/api/src/dmlf/select.js
+++ /dev/null
@@ -1,37 +0,0 @@
-const Command = require('./command');
-
-class Select extends Command {
-  constructor() {
-    super();
-    /** @type {number} */
-    this.topRecords = undefined;
-    /** @type {import('@dbgate/types').NamedObjectInfo} */
-    this.from = undefined;
-    /** @type {import('@dbgate/types').RangeDefinition} */
-    this.range = undefined;
-    this.distinct = false;
-    this.selectAll = false;
-  }
-
-  /** @param dumper {import('@dbgate/types').SqlDumper}  */
-  dumpSql(dumper) {
-    dumper.put('^select ');
-    if (this.topRecords) {
-      dumper.put('^top %s ', this.topRecords);
-    }
-    if (this.distinct) {
-      dumper.put('^distinct ');
-    }
-    if (this.selectAll) {
-      dumper.put('* ');
-    } else {
-      // TODO
-    }
-    dumper.put('^from %f ', this.from);
-    if (this.range) {
-      dumper.put('^limit %s ^offset %s ', this.range.limit, this.range.offset);
-    }
-  }
-}
-
-module.exports = Select;
diff --git a/packages/api/src/proc/databaseConnectionProcess.js b/packages/api/src/proc/databaseConnectionProcess.js
index e7f3571d6..8198d3c23 100644
--- a/packages/api/src/proc/databaseConnectionProcess.js
+++ b/packages/api/src/proc/databaseConnectionProcess.js
@@ -1,6 +1,6 @@
 const engines = require('@dbgate/engines');
-const Select = require('../dmlf/select');
-const driverConnect = require('../utility/driverConnect')
+const { Select } = require('@dbgate/sqltree');
+const driverConnect = require('../utility/driverConnect');
 
 let systemConnection;
 let storedConnection;
diff --git a/packages/sqltree/.gitignore b/packages/sqltree/.gitignore
new file mode 100644
index 000000000..7951405f8
--- /dev/null
+++ b/packages/sqltree/.gitignore
@@ -0,0 +1 @@
+lib
\ No newline at end of file
diff --git a/packages/sqltree/package.json b/packages/sqltree/package.json
new file mode 100644
index 000000000..48fe55d2b
--- /dev/null
+++ b/packages/sqltree/package.json
@@ -0,0 +1,19 @@
+{
+  "version": "0.1.0",
+  "name": "@dbgate/sqltree",
+  "main": "lib/index.js",
+  "typings": "lib/index.d.ts",
+  "scripts": {
+    "prepare": "yarn build",
+    "build": "tsc",
+    "start": "tsc --watch"
+  },
+  "files": [
+    "lib"
+  ],
+  "devDependencies": {
+    "@dbgate/types": "^0.1.0",
+    "@types/node": "^13.7.0",
+    "typescript": "^3.7.5"
+  }
+}
\ No newline at end of file
diff --git a/packages/sqltree/src/Command.ts b/packages/sqltree/src/Command.ts
new file mode 100644
index 000000000..aa437ddb6
--- /dev/null
+++ b/packages/sqltree/src/Command.ts
@@ -0,0 +1,13 @@
+import { EngineDriver, SqlDumper } from "@dbgate/types";
+
+class Command {
+  toSql(driver: EngineDriver) {
+    const dumper = driver.createDumper();
+    this.dumpSql(dumper);
+    return dumper.s;
+  }
+
+  dumpSql(dumper: SqlDumper) {}
+}
+
+export default Command;
diff --git a/packages/sqltree/src/Select.ts b/packages/sqltree/src/Select.ts
new file mode 100644
index 000000000..4036ca041
--- /dev/null
+++ b/packages/sqltree/src/Select.ts
@@ -0,0 +1,31 @@
+import Command from "./Command";
+import { NamedObjectInfo, RangeDefinition, SqlDumper } from "@dbgate/types";
+
+class Select extends Command {
+  topRecords: number;
+  from: NamedObjectInfo;
+  range: RangeDefinition;
+  distinct = false;
+  selectAll = false;
+
+  dumpSql(dumper: SqlDumper) {
+    dumper.put("^select ");
+    if (this.topRecords) {
+      dumper.put("^top %s ", this.topRecords);
+    }
+    if (this.distinct) {
+      dumper.put("^distinct ");
+    }
+    if (this.selectAll) {
+      dumper.put("* ");
+    } else {
+      // TODO
+    }
+    dumper.put("^from %f ", this.from);
+    if (this.range) {
+      dumper.put("^limit %s ^offset %s ", this.range.limit, this.range.offset);
+    }
+  }
+}
+
+export default Select;
diff --git a/packages/sqltree/src/index.ts b/packages/sqltree/src/index.ts
new file mode 100644
index 000000000..1b60b07ce
--- /dev/null
+++ b/packages/sqltree/src/index.ts
@@ -0,0 +1,2 @@
+export { default as Select } from "./Select";
+export { default as Command } from "./Command";
diff --git a/packages/sqltree/tsconfig.json b/packages/sqltree/tsconfig.json
new file mode 100644
index 000000000..4dfd0a5f7
--- /dev/null
+++ b/packages/sqltree/tsconfig.json
@@ -0,0 +1,12 @@
+{
+    "compilerOptions": {
+      "target": "ES2015",
+      "module": "commonjs",
+      "declaration": true,
+      "skipLibCheck": true,
+      "outDir": "lib"
+    },
+    "include": [
+      "src/**/*"
+    ]
+  }
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index 3ce79f8f8..0b7da6bb4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1474,6 +1474,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.26.tgz#213e153babac0ed169d44a6d919501e68f59dea9"
   integrity sha512-UmUm94/QZvU5xLcUlNR8hA7Ac+fGpO1EG/a8bcWVz0P0LqtxFmun9Y2bbtuckwGboWJIT70DoWq1r3hb56n3DA==
 
+"@types/node@^13.7.0":
+  version "13.7.7"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.7.7.tgz#1628e6461ba8cc9b53196dfeaeec7b07fa6eea99"
+  integrity sha512-Uo4chgKbnPNlxQwoFmYIwctkQVkMMmsAoGGU4JKwLuvBefF0pCq4FybNSnfkfRCpC7ZW7kttcC/TrRtAJsvGtg==
+
 "@types/node@^8.0.47":
   version "8.10.59"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.10.59.tgz#9e34261f30183f9777017a13d185dfac6b899e04"