diff --git a/README.md b/README.md
index f4aa5fc..b495e3d 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,84 @@
-# zquery
 
-select table_schema, table_name, column_name
-from information_schema.columns
-where table_schema = 'r11'
-and table_name = 'meas_2g_daily';
\ No newline at end of file
+# ZQuery Template
+
+Query collection for ZDB
+
+
+## Query Tips
+
+- Always use date for filter queries
+- Using the site_id filter would be better
+- To check query results, filter the date using the past 7 days first
+
+## Query
+
+#### Example #1
+
+query meas lookup to `network_cell` to get `site_id` field, from 7 days before until yesterday with specify `site_id`
+
+```sql
+    select date, site_id, sum(payload_mbyte) as payload_mbyte
+    from r11.meas_2g_daily m
+            join network_cell n on m.network_cell_id = n.id
+    where date between date_int(7) and date_int(1)
+    and site_id in ('SITE_ID')
+    group by date, site_id
+    order by site_id, date;
+```
+
+#### Example #2
+
+query meas lookup to `network_cell` to get `site_id` field and `cluster` name, from 7 days before until yesterday with specify `cluster`
+
+```sql
+    select date, n.site_id, cluster, sum(payload_mbyte) as payload_mbyte
+    from r11.meas_2g_daily m
+            join network_cell n on m.network_cell_id = n.id
+            join ref_site r on n.site_id = r.site_id
+    where date between date_int(7) and date_int(1)
+    and r.cluster in ('CLUSTER NAME')
+    group by date, n.site_id, cluster
+    order by cluster, n.site_id, date;
+```
+## Function List
+
+| Function | Example     | Result     | Description                |
+| :-------- | :------- | :------- | :------------------------- |
+| to_week(date) | to_week('2023-12-01') | 202348 | convert date to week |
+| date_from(yearweek) | date_from('202348') | 2023-12-01 | start date of a week |
+| date_to(yearweek) | date_to('202348') | 2023-12-07 | start end of a week |
+| date_int(number) | date_int(2) | 2023-12-06 | get date with interval from current date |
+| ndp(num, denum) | ndp(2,4) | 50.00 | num denum calculation with percentage result format |
+| nds(num, denum) | nds(1,3) | 0.33 | num denum calculation with standard result format |
+
+## Table List
+
+| Schema | Table     | Description                |
+| :-------- | :------- | :------------------------- |
+| r08, r09, r11 | meas_2g_hourly | meas hourly cell |
+| r08, r09, r11 | meas_4g_hourly | meas hourly cell |
+| r08, r09, r11 | meas_5g_hourly | meas hourly cell |
+| r08, r09, r11 | meas_2g_daily | meas daily cell |
+| r08, r09, r11 | meas_4g_daily | meas daily cell |
+| r08, r09, r11 | meas_5g_daily | meas daily cell |
+| r08, r09, r11 | meas_2g_daily_bh_traffic | meas daily busy hour (by traffic) cell |
+| r08, r09, r11 | meas_4g_daily_bh_activeuser | meas daily busy hour (by active user) cell |
+| r08, r09, r11 | meas_5g_daily_bh_payload | meas daily busy hour (by payload) cell |
+| r08, r09, r11 | meas_2g_daily_bdbh_traffic | meas weekly busy day busy hour (by traffic) cell |
+| r08, r09, r11 | meas_4g_daily_bdbh_activeuser | meas weekly busy day busy hour (by active user) cell |
+| r08, r09, r11 | meas_5g_daily_bdbh_payload | meas weekly busy day busy hour (by payload) cell |
+| r08, r09, r11 | pl_2g_hourly | packet loss hourly site |
+| r08, r09, r11 | pl_4g_15min | packet loss 15 minutes site |
+
+| Schema | Table     | Description                |
+| :-------- | :------- | :------------------------- |
+| public | network_cell | cell reference for meas lookup |
+| public | network_site | site reference for pl lookup |
+| public | ref_site | region reference |
+## Features
+
+- Light/dark mode toggle
+- Live previews
+- Fullscreen mode
+- Cross platform
+