[fix](docs) add table setup for IF example in 3.x/2.1

i18n/zh-CN/docusaurus-plugin-content-docs/version-2.1/sql-manual/sql-functions/scalar-functions/conditional-functions/if.md

@@ -1,4 +1,4 @@
 ---
 {
     "title": "IF",
     "language": "zh-CN",
@@ -10,7 +10,7 @@
 
 如果表达式 `<condition>` 成立，则返回 `<value_true>`；否则返回 `<value_false_or_null>`。  
 返回类型：`<value_true>` 表达式的结果类型。
 
 ## 语法
 
 ```sql
@@ -27,6 +27,13 @@
 
 ## 举例
 
+```sql
+create table test(
+    user_id int
+) properties('replication_num' = '1');
+insert into test values(1),(2);
+```
+
 ```sql
 SELECT user_id, IF(user_id = 1, "true", "false") AS test_if FROM test;
 ```

i18n/zh-CN/docusaurus-plugin-content-docs/version-3.x/sql-manual/sql-functions/scalar-functions/conditional-functions/if.md

@@ -1,4 +1,4 @@
 ---
 {
     "title": "IF",
     "language": "zh-CN",
@@ -10,7 +10,7 @@
 
 如果表达式 `<condition>` 成立，则返回 `<value_true>`；否则返回 `<value_false_or_null>`。  
 返回类型：`<value_true>` 表达式的结果类型。
 
 ## 语法
 
 ```sql
@@ -27,6 +27,13 @@
 
 ## 举例
 
+```sql
+create table test(
+    user_id int
+) properties('replication_num' = '1');
+insert into test values(1),(2);
+```
+
 ```sql
 SELECT user_id, IF(user_id = 1, "true", "false") AS test_if FROM test;
 ```

versioned_docs/version-2.1/sql-manual/sql-functions/scalar-functions/conditional-functions/if.md

@@ -1,4 +1,4 @@
 ---
 {
     "title": "IF",
     "language": "en",
@@ -17,7 +17,7 @@
 ```
 
 ## Parameters
 
 | Parameter               | Description                                                  |
 |-------------------------|--------------------------------------------------------------|
 | `<condition>`           | The boolean condition to evaluate.                           |
@@ -25,13 +25,20 @@
 | `<value_false_or_null>` | The value to return if `<condition>` evaluates to false.     |
 
 ## Return Value
 
 The result of the IF expression:
 - Returns `valueTrue` when the condition is true.
 - Returns `valueFalseOrNull` when the condition is false.
 
 ## Examples
 
+```sql
+create table test(
+    user_id int
+) properties('replication_num' = '1');
+insert into test values(1),(2);
+```
+
 ```sql
 SELECT user_id, IF(user_id = 1, 'true', 'false') AS test_if FROM test;
 ```

versioned_docs/version-3.x/sql-manual/sql-functions/scalar-functions/conditional-functions/if.md

@@ -1,4 +1,4 @@
 ---
 {
     "title": "IF",
     "language": "en",
@@ -17,7 +17,7 @@
 ```
 
 ## Parameters
 
 | Parameter               | Description                                                  |
 |-------------------------|--------------------------------------------------------------|
 | `<condition>`           | The boolean condition to evaluate.                           |
@@ -32,6 +32,13 @@
 
 ## Examples
 
+```sql
+create table test(
+    user_id int
+) properties('replication_num' = '1');
+insert into test values(1),(2);
+```
+
 ```sql
 SELECT user_id, IF(user_id = 1, 'true', 'false') AS test_if FROM test;
 ```