docs: update delete docs

4paradigm · Jun 19, 2023 · 3640df8 · 3640df8
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diff --git a/docs/en/reference/sql/dml/DELETE_STATEMENT.md b/docs/en/reference/sql/dml/DELETE_STATEMENT.md
@@ -13,12 +13,16 @@ TableName ::=
 **Description**
 
 - `DELETE` statement will delete all data from the index of specific column value of online table.
-- The filter columns sepcified by `WHERE` must be an index column and the condition can only be `=`.
+- The filter columns sepcified by `WHERE` must be an index column. if it is a key column, only `=` can be used.
 
 ## Examples
 
 ```SQL
 DELETE FROM t1 WHERE col1 = 'aaaa';
 
-DELETE FROM t1 WHERE col1 = 'aaaa' and col2 = 'bbbb';
+DELETE FROM t1 WHERE col1 = 'aaaa' and ts_col = 1687145994000;
+
+DELETE FROM t1 WHERE col1 = 'aaaa' and ts_col > 1687059594000 and ts_col < 1687145994000;
+
+DELETE FROM t1 WHERE ts_col > 1687059594000 and ts_col < 1687145994000;
 ```
diff --git a/docs/zh/openmldb_sql/dml/DELETE_STATEMENT.md b/docs/zh/openmldb_sql/dml/DELETE_STATEMENT.md
@@ -12,13 +12,17 @@ TableName ::=
 
 **说明**
 
-- `DELETE` 语句删除在线表指定列的索引下面对应值的所有数据
-- `WHERE` 指定的筛选列必须是索引列并且只能是等于
+- `DELETE` 语句删除在线表满足指定条件的数据
+- `WHERE` 指定的筛选列必须是索引列。如果是key列只能用等于
 
 ## Examples
 
 ```SQL
 DELETE FROM t1 WHERE col1 = 'aaaa';
 
-DELETE FROM t1 WHERE col1 = 'aaaa' and col2 = 'bbbb';
+DELETE FROM t1 WHERE col1 = 'aaaa' and ts_col = 1687145994000;
+
+DELETE FROM t1 WHERE col1 = 'aaaa' and ts_col > 1687059594000 and ts_col < 1687145994000;
+
+DELETE FROM t1 WHERE ts_col > 1687059594000 and ts_col < 1687145994000;
 ```