diff --git a/src/utils/importSQL/mariadb.js b/src/utils/importSQL/mariadb.js
index e458d84..eb430f3 100644
--- a/src/utils/importSQL/mariadb.js
+++ b/src/utils/importSQL/mariadb.js
@@ -92,7 +92,7 @@ export function fromMariaDB(ast, diagramDb = DB.GENERIC) {
             }
             field.check = "";
             if (d.check) {
-              field.check = buildSQLFromAST(d.check.definition[0]);
+              field.check = buildSQLFromAST(d.check.definition[0], DB.MARIADB);
             }
 
             table.fields.push(field);
diff --git a/src/utils/importSQL/mssql.js b/src/utils/importSQL/mssql.js
index 4d8efef..4b63685 100644
--- a/src/utils/importSQL/mssql.js
+++ b/src/utils/importSQL/mssql.js
@@ -104,7 +104,7 @@ export function fromMSSQL(ast, diagramDb = DB.GENERIC) {
             }
             field.check = "";
             if (d.check) {
-              field.check = buildSQLFromAST(d.check.definition[0]);
+              field.check = buildSQLFromAST(d.check.definition[0], DB.MSSQL);
             }
 
             table.fields.push(field);
diff --git a/src/utils/importSQL/mysql.js b/src/utils/importSQL/mysql.js
index a6b674b..caa06d6 100644
--- a/src/utils/importSQL/mysql.js
+++ b/src/utils/importSQL/mysql.js
@@ -92,7 +92,7 @@ export function fromMySQL(ast, diagramDb = DB.GENERIC) {
             }
             field.check = "";
             if (d.check) {
-              field.check = buildSQLFromAST(d.check.definition[0]);
+              field.check = buildSQLFromAST(d.check.definition[0], DB.MYSQL);
             }
 
             table.fields.push(field);
diff --git a/src/utils/importSQL/postgres.js b/src/utils/importSQL/postgres.js
index 84b0f80..be183d8 100644
--- a/src/utils/importSQL/postgres.js
+++ b/src/utils/importSQL/postgres.js
@@ -92,7 +92,7 @@ export function fromPostgres(ast, diagramDb = DB.GENERIC) {
             }
             field.check = "";
             if (d.check) {
-              field.check = buildSQLFromAST(d.check.definition[0]);
+              field.check = buildSQLFromAST(d.check.definition[0], DB.POSTGRES);
             }
 
             table.fields.push(field);
diff --git a/src/utils/importSQL/shared.js b/src/utils/importSQL/shared.js
index 0c27310..cab0cbc 100644
--- a/src/utils/importSQL/shared.js
+++ b/src/utils/importSQL/shared.js
@@ -1,7 +1,24 @@
-export function buildSQLFromAST(ast) {
+import { DB } from "../../data/constants";
+
+function quoteColumn(str, db) {
+  switch (db) {
+    case DB.MYSQL:
+      return `\`${str}\``;
+    case DB.SQLITE:
+      return `"${str}"`;
+    case DB.POSTGRES:
+      return `"${str}"`;
+    case DB.MSSQL:
+      return `[${str}]`;
+    case DB.MARIADB:
+      return `\`${str}\``;
+  }
+}
+
+export function buildSQLFromAST(ast, db = DB.MYSQL) {
   if (ast.type === "binary_expr") {
-    const leftSQL = buildSQLFromAST(ast.left);
-    const rightSQL = buildSQLFromAST(ast.right);
+    const leftSQL = buildSQLFromAST(ast.left, db);
+    const rightSQL = buildSQLFromAST(ast.right, db);
     return `${leftSQL} ${ast.operator} ${rightSQL}`;
   }
 
@@ -26,7 +43,7 @@ export function buildSQLFromAST(ast) {
     }
     return expr;
   } else if (ast.type === "column_ref") {
-    return "`" + ast.column + "`";
+    return quoteColumn(ast.column, db);
   } else if (ast.type === "expr_list") {
     return ast.value.map((v) => v.value).join(" AND ");
   } else {
diff --git a/src/utils/importSQL/sqlite.js b/src/utils/importSQL/sqlite.js
index 7a1c9c3..28f359d 100644
--- a/src/utils/importSQL/sqlite.js
+++ b/src/utils/importSQL/sqlite.js
@@ -110,7 +110,7 @@ export function fromSQLite(ast, diagramDb = DB.GENERIC) {
             }
             field.check = "";
             if (d.check) {
-              field.check = buildSQLFromAST(d.check.definition[0]);
+              field.check = buildSQLFromAST(d.check.definition[0], DB.SQLITE);
             }
 
             table.fields.push(field);