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Fix inconsistency in ARRAY_SIZE(NULL) documentation #3198

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Fix inconsistency in ARRAY_SIZE(NULL) documentation #3198

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d3024a8
Fix inconsistency in ARRAY_SIZE(NULL) documentation
Dec 17, 2025
0256005
Align ARRAY_SIZE examples for NULL vs array containing NULL across docs
Dec 19, 2025
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8 changes: 5 additions & 3 deletions ...ion-2.1/sql-manual/sql-functions/scalar-functions/array-functions/array-size.md
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Original file line number Diff line number Diff line change
Expand Up @@ -30,16 +30,18 @@ ARRAY_SIZE(<arr>)

返回数组中元素数量，如果输入数组为 NULL，则返回 NULL



## 举例

```sql
SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE([NULL]),ARRAY_SIZE([]);
SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE(NULL),ARRAY_SIZE([]);
```

```text
+------------------------------+---------------------+-----------------+
| cardinality(['a', 'b', 'c']) | cardinality([NULL]) | cardinality([]) |
| cardinality(['a', 'b', 'c']) | cardinality(NULL) | cardinality([]) |
+------------------------------+---------------------+-----------------+
| 3 | 1 | 0 |
| 3 | NULL | 0 |
+------------------------------+---------------------+-----------------+
```
6 changes: 3 additions & 3 deletions ...ion-3.x/sql-manual/sql-functions/scalar-functions/array-functions/array-size.md
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Expand Up @@ -33,13 +33,13 @@ ARRAY_SIZE(<arr>)
## 举例

```sql
SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE([NULL]),ARRAY_SIZE([]);
SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE(NULL),ARRAY_SIZE([]);
```

```text
+------------------------------+---------------------+-----------------+
| cardinality(['a', 'b', 'c']) | cardinality([NULL]) | cardinality([]) |
| cardinality(['a', 'b', 'c']) | cardinality(NULL) | cardinality([]) |
+------------------------------+---------------------+-----------------+
| 3 | 1 | 0 |
| 3 | NULL | 0 |
+------------------------------+---------------------+-----------------+
```
2 changes: 1 addition & 1 deletion ...ion-2.1/sql-manual/sql-functions/scalar-functions/array-functions/array-size.md
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Expand Up @@ -40,6 +40,6 @@ SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE([NULL]),ARRAY_SIZE([]);
+------------------------------+---------------------+-----------------+
| cardinality(['a', 'b', 'c']) | cardinality([NULL]) | cardinality([]) |
+------------------------------+---------------------+-----------------+
| 3 | 1 | 0 |
| 3 | NULL | 0 |
+------------------------------+---------------------+-----------------+
```
6 changes: 3 additions & 3 deletions ...ion-3.x/sql-manual/sql-functions/scalar-functions/array-functions/array-size.md
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Expand Up @@ -33,13 +33,13 @@ Returns the number of elements in the array. If the input array is NULL, it retu
## Example

```sql
SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE([NULL]),ARRAY_SIZE([]);
SELECT ARRAY_SIZE(['a', 'b', 'c']),ARRAY_SIZE(NULL),ARRAY_SIZE([]);
```

```text
+------------------------------+---------------------+-----------------+
| cardinality(['a', 'b', 'c']) | cardinality([NULL]) | cardinality([]) |
| cardinality(['a', 'b', 'c']) | cardinality(NULL) | cardinality([]) |
+------------------------------+---------------------+-----------------+
| 3 | 1 | 0 |
| 3 | NULL | 0 |
+------------------------------+---------------------+-----------------+
```
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