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Merge pull request #61285 from peter279k/improve_null_usage

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Improve related NULL functions usage
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Robert Schulze 2024-03-13 15:32:58 +01:00 committed by GitHub
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2 changed files with 6 additions and 2 deletions
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4
docs/en/sql-reference/functions/functions-for-nulls.md
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@ -10,6 +10,8 @@ sidebar_label: Nullable
Returns whether the argument is [NULL](../../sql-reference/syntax.md#null).
See also operator [`IS NULL`](../operators/index.md#is_null).
``` sql
isNull(x)
```
@ -54,6 +56,8 @@ Result:
Returns whether the argument is not [NULL](../../sql-reference/syntax.md#null-literal).
See also operator [`IS NOT NULL`](../operators/index.md#is_not_null).
``` sql
isNotNull(x)
```

4
docs/en/sql-reference/operators/index.md
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@ -353,7 +353,7 @@ For efficiency, the `and` and `or` functions accept any number of arguments. The
ClickHouse supports the `IS NULL` and `IS NOT NULL` operators.
### IS NULL
### IS NULL {#is_null}
- For [Nullable](../../sql-reference/data-types/nullable.md) type values, the `IS NULL` operator returns:
- `1`, if the value is `NULL`.
@ -374,7 +374,7 @@ SELECT x+100 FROM t_null WHERE y IS NULL
└──────────────┘
```
### IS NOT NULL
### IS NOT NULL {#is_not_null}
- For [Nullable](../../sql-reference/data-types/nullable.md) type values, the `IS NOT NULL` operator returns:
- `0`, if the value is `NULL`.