docs/sql-manual/sql-functions/debug-functions/ignore.md

---
{
    "title": "IGNORE",
    "language": "en"
}
---

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## ignore
### description

:::tip
For developer debugging only, do not call this function manually in the production environment.
:::

#### Syntax

`BOOLEAN ignore(T expr...)`

Returns `false` for any input.

### example

```sql
mysql> select m1, ignore(m1,m2,m1+m2,1) from t_nullable;
+------+----------------------------------------------------------------------+
| m1   | ignore(CAST(`m1` AS BIGINT), CAST(`m2` AS BIGINT), (`m1` + `m2`), 1) |
+------+----------------------------------------------------------------------+
|    1 |                                                                    0 |
+------+----------------------------------------------------------------------+

mysql> select ignore();
+----------+
| ignore() |
+----------+
|        0 |
+----------+
```

### keywords
    ignore