diff --git a/packages/graphic-walker/package.json b/packages/graphic-walker/package.json
index cb0be39c..e66303b7 100644
--- a/packages/graphic-walker/package.json
+++ b/packages/graphic-walker/package.json
@@ -58,6 +58,7 @@
     "@radix-ui/react-context-menu": "^2.1.5",
     "@radix-ui/react-dialog": "^1.0.5",
     "@radix-ui/react-dropdown-menu": "^2.0.6",
+    "@radix-ui/react-hover-card": "^1.0.7",
     "@radix-ui/react-icons": "^1.3.0",
     "@radix-ui/react-label": "^2.0.2",
     "@radix-ui/react-popover": "^1.0.7",
diff --git a/packages/graphic-walker/src/components/dataTable/index.tsx b/packages/graphic-walker/src/components/dataTable/index.tsx
index eb81e81f..f0224a47 100644
--- a/packages/graphic-walker/src/components/dataTable/index.tsx
+++ b/packages/graphic-walker/src/components/dataTable/index.tsx
@@ -11,11 +11,12 @@ import { PureFilterEditDialog } from '../../fields/filterField/filterEditDialog'
 import { BarsArrowDownIcon, BarsArrowUpIcon, FunnelIcon } from '@heroicons/react/24/outline';
 import { ComputationContext } from '../../store';
 import { parsedOffsetDate } from '../../lib/op/offset';
-import { formatDate } from '../../utils';
+import { cn, formatDate } from '../../utils';
 import { FieldProfiling } from './profiling';
 import { addFilterForQuery, createFilter } from '../../utils/workflow';
 import { Button, buttonVariants } from '../ui/button';
 import { Badge } from '../ui/badge';
+import { HoverCard, HoverCardContent, HoverCardTrigger } from '../ui/hover-card';
 
 interface DataTableProps {
     /** page limit */
@@ -164,12 +165,66 @@ function useFilters(metas: IMutField[]) {
     return { filters, options, editingFilterIdx, onSelectFilter, onDeleteFilter, onWriteFilter, onClose };
 }
 
-function FieldValue(props: { field: IMutField; item: IRow; displayOffset?: number }) {
+function fieldValue(props: { field: IMutField; item: IRow; displayOffset?: number }) {
     const { field, item } = props;
     if (field.semanticType === 'temporal') {
-        return <>{formatDate(parsedOffsetDate(props.displayOffset, field.offset)(item[field.fid]))}</>;
+        return formatDate(parsedOffsetDate(props.displayOffset, field.offset)(item[field.fid]));
     }
-    return <>{`${item[field.fid]}`}</>;
+    return `${item[field.fid]}`;
+}
+
+function CopyButton(props: { value: string }) {
+    const [copied, setCopied] = useState(false);
+    useEffect(() => {
+        if (copied) {
+            const timer = setTimeout(() => {
+                setCopied(false);
+            }, 2000);
+            return () => {
+                clearTimeout(timer);
+            };
+        }
+    }, [copied]);
+    return (
+        <Button
+            variant="secondary"
+            className="h-6 px-2 text-xs w-14"
+            size="sm"
+            onClick={() => {
+                try {
+                    navigator.clipboard.writeText(props.value);
+                    setCopied(true);
+                } catch (e) {
+                    console.error(e);
+                }
+            }}
+            disabled={copied}
+        >
+            {copied ? 'Copied' : 'Copy'}
+        </Button>
+    );
+}
+
+function TruncateDector(props: { value: string }) {
+    const ref = useRef<HTMLAnchorElement>(null);
+    const [isTruncate, setIsTruncate] = useState(false);
+    const [open, setOpen] = useState(false);
+    useEffect(() => {
+        if (ref.current) {
+            setIsTruncate(ref.current.offsetWidth < ref.current.scrollWidth);
+        }
+    }, [ref.current]);
+    return (
+        <HoverCard open={open && isTruncate} onOpenChange={setOpen}>
+            <HoverCardTrigger ref={ref} className="truncate block">
+                {props.value}
+            </HoverCardTrigger>
+            <HoverCardContent className="flex space-x-2 items-center w-fit py-2 px-3">
+                <p className="text-xs max-w-[360px] line-clamp-4 break-all">{props.value}</p>
+                <CopyButton value={props.value} />
+            </HoverCardContent>
+        </HoverCard>
+    );
 }
 
 const DataTable: React.FC<DataTableProps> = (props) => {
@@ -442,11 +497,17 @@ const DataTable: React.FC<DataTableProps> = (props) => {
                     <tbody className="divide-y divide-border bg-background font-mono">
                         {rows.map((row, index) => (
                             <tr className="divide-x divide-border" key={index}>
-                                {metas.map((field) => (
-                                    <td key={field.fid + index} className={getHeaderType(field) + ' whitespace-nowrap py-2 px-4 text-xs text-muted-foreground'}>
-                                        <FieldValue field={field} item={row} displayOffset={displayOffset} />
-                                    </td>
-                                ))}
+                                {metas.map((field) => {
+                                    const value = fieldValue({ field, item: row, displayOffset });
+                                    return (
+                                        <td
+                                            key={field.fid + index}
+                                            className={getHeaderType(field) + ' whitespace-nowrap py-2 px-4 text-xs text-muted-foreground max-w-[240px]'}
+                                        >
+                                            <TruncateDector value={value} />
+                                        </td>
+                                    );
+                                })}
                             </tr>
                         ))}
                     </tbody>
diff --git a/packages/graphic-walker/src/components/dataTable/profiling.tsx b/packages/graphic-walker/src/components/dataTable/profiling.tsx
index 547d9e1f..5b9578d2 100644
--- a/packages/graphic-walker/src/components/dataTable/profiling.tsx
+++ b/packages/graphic-walker/src/components/dataTable/profiling.tsx
@@ -52,7 +52,7 @@ function NominalProfiling({ computation, field, valueRenderer = (s) => `${s}` }:
                         return (
                             <Tooltip key={idx} content={displayValue}>
                                 <div className="w-full rounded-md px-2 py-1 hover:bg-accent flex justify-between space-x-2">
-                                    <div className="min-w-[0px] flex-shrink whitespace-nowrap text-ellipsis overflow-hidden">{displayValue}</div>
+                                    <div className="min-w-[0px] flex-shrink truncate max-w-[180px]">{displayValue}</div>
                                     <div className="flex-shrink-0">{Math.floor((100 * count) / meta.total)}%</div>
                                 </div>
                             </Tooltip>
diff --git a/packages/graphic-walker/src/components/ui/hover-card.tsx b/packages/graphic-walker/src/components/ui/hover-card.tsx
new file mode 100644
index 00000000..6da1c7cd
--- /dev/null
+++ b/packages/graphic-walker/src/components/ui/hover-card.tsx
@@ -0,0 +1,30 @@
+import * as React from 'react';
+import * as HoverCardPrimitive from '@radix-ui/react-hover-card';
+
+import { cn } from '@/utils';
+import { portalContainerContext } from '@/store/theme';
+
+const HoverCard = HoverCardPrimitive.Root;
+
+const HoverCardTrigger = HoverCardPrimitive.Trigger;
+
+const HoverCardContent = React.forwardRef<
+    React.ElementRef<typeof HoverCardPrimitive.Content>,
+    React.ComponentPropsWithoutRef<typeof HoverCardPrimitive.Content>
+>(({ className, align = 'center', sideOffset = 4, ...props }, ref) => (
+    <HoverCardPrimitive.Portal container={React.useContext(portalContainerContext)}>
+        <HoverCardPrimitive.Content
+            ref={ref}
+            align={align}
+            sideOffset={sideOffset}
+            className={cn(
+                'z-50 w-64 rounded-md border bg-popover p-4 text-popover-foreground shadow-md outline-none data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2',
+                className
+            )}
+            {...props}
+        />
+    </HoverCardPrimitive.Portal>
+));
+HoverCardContent.displayName = HoverCardPrimitive.Content.displayName;
+
+export { HoverCard, HoverCardTrigger, HoverCardContent };
diff --git a/yarn.lock b/yarn.lock
index 6f44f48c..c6ece5c8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1297,6 +1297,22 @@
     "@radix-ui/react-primitive" "1.0.3"
     "@radix-ui/react-use-callback-ref" "1.0.1"
 
+"@radix-ui/react-hover-card@^1.0.7":
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/@radix-ui/react-hover-card/-/react-hover-card-1.0.7.tgz#684bca2504432566357e7157e087051aa3577948"
+  integrity sha512-OcUN2FU0YpmajD/qkph3XzMcK/NmSk9hGWnjV68p6QiZMgILugusgQwnLSDs3oFSJYGKf3Y49zgFedhGh04k9A==
+  dependencies:
+    "@babel/runtime" "^7.13.10"
+    "@radix-ui/primitive" "1.0.1"
+    "@radix-ui/react-compose-refs" "1.0.1"
+    "@radix-ui/react-context" "1.0.1"
+    "@radix-ui/react-dismissable-layer" "1.0.5"
+    "@radix-ui/react-popper" "1.1.3"
+    "@radix-ui/react-portal" "1.0.4"
+    "@radix-ui/react-presence" "1.0.1"
+    "@radix-ui/react-primitive" "1.0.3"
+    "@radix-ui/react-use-controllable-state" "1.0.1"
+
 "@radix-ui/react-icons@^1.3.0":
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/@radix-ui/react-icons/-/react-icons-1.3.0.tgz#c61af8f323d87682c5ca76b856d60c2312dbcb69"
@@ -2060,7 +2076,7 @@
     "@types/react" "*"
     "@types/reactcss" "*"
 
-"@types/react-dom@*", "@types/react-dom@^18.2.15", "@types/react-dom@^18.x":
+"@types/react-dom@*", "@types/react-dom@^18.2.15":
   version "18.3.0"
   resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-18.3.0.tgz#0cbc818755d87066ab6ca74fbedb2547d74a82b0"
   integrity sha512-EhwApuTmMBmXuFOikhQLIBUn6uFg81SwLMOAUgodJF14SOBOCMdU04gDoYi0WOJJHD144TL32z4yDqCW3dnkQg==
@@ -2074,7 +2090,7 @@
   dependencies:
     "@types/react" "*"
 
-"@types/react@*", "@types/react@^18.2.37", "@types/react@^18.x":
+"@types/react@*", "@types/react@^18.2.37":
   version "18.3.2"
   resolved "https://registry.yarnpkg.com/@types/react/-/react-18.3.2.tgz#462ae4904973bc212fa910424d901e3d137dbfcd"
   integrity sha512-Btgg89dAnqD4vV7R3hlwOxgqobUQKgx3MmrQRi0yYbs/P0ym8XozIAlkqVilPqHQwXs4e9Tf63rrCgl58BcO4w==