diff --git a/docs/en/12-taos-sql/10-function.md b/docs/en/12-taos-sql/10-function.md
index a204415d651f0b8f784fc1602133eff3ff378133..b469da8f558014d9d4711b6348a84c90dd413c95 100644
--- a/docs/en/12-taos-sql/10-function.md
+++ b/docs/en/12-taos-sql/10-function.md
@@ -1008,8 +1008,7 @@ SAMPLE(expr, k)
 
 **More explanations**:
 
-This function cannot be used in expression calculation.
-- Must be used with `PARTITION BY tbname` when it's used on a STable to force the result on each single timeline
+- This function cannot be used in expression calculation.
 
 
 ### TAIL
@@ -1088,7 +1087,6 @@ CSUM(expr)
 
 - Arithmetic operation can't be performed on the result of `csum` function
 - Can only be used with aggregate functions This function can be used with supertables and standard tables.
-- Must be used with `PARTITION BY tbname` when it's used on a STable to force the result on each single timeline
 
 
 ### DERIVATIVE
@@ -1112,7 +1110,6 @@ ignore_negative: {
 
 **More explanation**:
 
-- It can be used together with `PARTITION BY tbname` against a STable.
 - It can be used together with a selected column. For example: select \_rowts, DERIVATIVE() from.
 
 ### DIFF
@@ -1175,7 +1172,6 @@ MAVG(expr, k)
 
 - Arithmetic operation can't be performed on the result of `MAVG`.
 - Can only be used with data columns, can't be used with tags. - Can't be used with aggregate functions.
-- Must be used with `PARTITION BY tbname` when it's used on a STable to force the result on each single timeline
 
 
 ### STATECOUNT
@@ -1201,7 +1197,6 @@ STATECOUNT(expr, oper, val)
 
 **More explanations**:
 
-- Must be used together with `PARTITION BY tbname` when it's used on a STable to force the result into each single timeline]
 - Can't be used with window operation, like interval/state_window/session_window
 
 
@@ -1229,7 +1224,6 @@ STATEDURATION(expr, oper, val, unit)
 
 **More explanations**:
 
-- Must be used together with `PARTITION BY tbname` when it's used on a STable to force the result into each single timeline]
 - Can't be used with window operation, like interval/state_window/session_window
 
 
@@ -1247,7 +1241,6 @@ TWA(expr)
 
 **Applicable table types**: standard tables and supertables
 
-- Must be used together with `PARTITION BY tbname` to force the result into each single timeline.
 
 
 ## System Information Functions