---
{
    "title": "ALTER-TABLE-REPLACE",
    "language": "en"
}
---

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## ALTER-TABLE-REPLACE

### Name

ALTER TABLE REPLACE

### Description

This statement is used to modify the attributes of the schema of the existing table. The syntax is basically similar to [ALTER TABLE CULUMN](ALTER-TABLE-COLUMN.md).

```sql
ALTER TABLE [database.]table MODIFY NEW_COLUMN_INFO REPLACE OLD_COLUMN_INFO ;
```

### Example

1. Modify the maximum length of the val1 column of base index. The original val1 is (val1 VARCHAR(32) REPLACE DEFAULT "abc")

```sql
ALTER TABLE example_db.my_table
MODIFY COLUMN val1 VARCHAR(64) REPLACE DEFAULT "abc";
```

### Keywords

```text
ALTER, TABLE, REPLACE
```

### Best Practice