## What is TRUNC function?

TRUNC removes the fractional part of the number. INT rounds numbers down to the nearest integer based on the value of the fractional part of the number. INT and TRUNC are different only when using negative numbers: TRUNC(-4.3) returns -4, but INT(-4.3) returns -5 because -5 is the lower number.

**How do I truncate to two decimal places in SQL?**

The following shows the syntax of the TRUNCATE() function:

- TRUNCATE(n, d)
- ROUND(n,d, f)
- SELECT TRUNCATE(123.4567,2);
- SELECT TRUNCATE(123.4567,-2);

### How do I remove decimal places in MySQL?

2 Answers

- If you want to round off decimal places, use ROUND(yourColumn,0) function. So 13.78 will become 14.
- If you want to get rid of decimal places, user FLOOR(yourColumn) So 13.78 will become 13.

**What is TRUNC in database?**

SQL Truncate is a data definition language (DDL) command. It removes all rows in a table. SQL Server stores data of a table in the pages. The truncate command deletes rows by deallocating the pages.

#### What is TRUNC in SQL Server?

In Oracle there is a function (trunc) used to remove the time portion of a date. In order to do this with SQL Server, you need to use the convert function. Convert takes 3 parameters, the datatype to convert to, the value to convert, and an optional parameter for the formatting style.

**What is the return value of TRUNC () function?**

The math. trunc() method returns the truncated integer part of a number. Note: This method will NOT round the number up/down to the nearest integer, but simply remove the decimals.

## How do I truncate to 4 decimal places in MySQL?

MySQL TRUNCATE() Function – Truncate a Number to a Specified Number of Decimal Places. In MySQL, the TRUNCATE() function truncates a value to a specified number of decimal places. The function accepts two arguments; the value, and the number of decimal places to truncate that value to.

**How do I TRUNC a number in SQL?**

The TRUNC (number) function returns n1 truncated to n2 decimal places. If n2 is omitted, then n1 is truncated to 0 places. n2 can be negative to truncate (make zero) n2 digits left of the decimal point.

### How do you cut off decimals in SQL?

Using ROUND() function: This function in SQL Server is used to round off a specified number to a specified decimal places. Using FLOOR() function: It returns the largest integer value that is less than or equal to a number.

**What is meant by truncate in SQL?**

TRUNCATE TABLE removes all rows from a table, but the table structure and its columns, constraints, indexes, and so on remain. To remove the table definition in addition to its data, use the DROP TABLE statement.

#### How do you truncate data in SQL?

To remove all data from an existing table, use the SQL TRUNCATE TABLE order. You can also use the DROP TABLE command to delete an entire table. But Truncate will remove the entire table structure from the database, and you will need to recreate the table if you want to store any data.

**How do I truncate a value in SQL?**

Syntax

- If this value is positive, that many of the least significant digits (to the right of the decimal point) are truncated: truncate(123.456,2) returns 123.450 .
- If this value is negative, that many of the least significant digits to the left of the decimal point are truncated: truncate(123.456,-1) returns 120.000 .

## How append () is different from TRUNC () function?

Append allows to add new data at the end of file while truncate to cut some last characters in file. Both are different logic: append is much simpler since it deals mostly with file length. Truncate in the other side must take into account such aspects as not full last block or truncated block referenced in snapshots.

**How do I truncate a column in MySQL?**

SELECT Concat(‘TRUNCATE TABLE ‘, TABLE_NAME) FROM INFORMATION_SCHEMA….The below example shows how to truncate multiple tables in MySQL:

- TRUNCATE TABLE table_name1;
- TRUNCATE TABLE table_name2;
- TRUNCATE TABLE table_name3;

### How use TRUNC function in SQL Server?

In SQL Server, you can use various expressions using CONVERT function to get the same result….TRUNC Conversion Overview.

Oracle | SQL Server | |
---|---|---|

Syntax | TRUNC(datetime [, unit]) | CONVERT expressions depending on unit |

Default Unit | ‘DD’ truncates to day (sets zero time) |

**Why use TRUNCATE instead of delete?**

Truncate removes all records and doesn’t fire triggers. Truncate is faster compared to delete as it makes less use of the transaction log. Truncate is not possible when a table is referenced by a Foreign Key or tables are used in replication or with indexed views.

#### What is difference between TRUNCATE and delete in mysql?

Delete and truncate both commands can be used to delete data of the table. Delete is a DML command whereas truncate is DDL command. Truncate can be used to delete the entire data of the table without maintaining the integrity of the table. On the other hand , delete statement can be used for deleting the specific data.

**How do I trunc a column in SQL?**

Executing the truncate command deletes all the data stored in the table or database….Some of the Restrictions on Alter table are as follows:

- By using an alter table, we can’t change the name of the table.
- We can’t modify the names of the columns.
- We can’t alter a column already containing data.