** Types of SQL Statements **

- Data Definition Language (DDL) Statements.
- Data Manipulation Language (DML) Statements.
- Transaction Control Statements.
- Session Control Statements.
- System Control Statement.
- Embedded SQL Statements.

Indeed, What is a double in SQL?

DOUBLE(size, d) **A normal-size floating point number**. The total number of digits is specified in size. The number of digits after the decimal point is specified in the d parameter.

Then, What is decimal SQL? DECIMAL(precision, scale) When defining, the DECIMAL data type **provides both precision and scale**. The precision defines the total number of decimal digits to store within the number. This includes digits to the left and right of the decimal.

What is cursor in SQL? A cursor in SQL is **a temporary work area created in system memory when a SQL statement is executed**. A SQL cursor is a set of rows together with a pointer that identifies a current row. It is a database object to retrieve data from a result set one row at a time.

In the same way What is integer SQL? Integer data types **hold numbers that are whole, or without a decimal point**. (In Latin, integer means whole.) ANSI SQL defines SMALLINT , INTEGER , and BIGINT as integer data types. The difference between these types is the size of the number that they can store.

**What is float SQL?**

Float is **an approximate number data type used to store a floating-point number**. float (n) – n is the number of bits that are used to store the mantissa in scientific notation. Range of values: – 1.79E+308 to -2.23E-308, 0 and 2.23E-308 to 1.79E+308.

**How do you define a float in SQL?**

The syntax for creating a float column **float(n), when n is between 1 to 53**. The default value of n is 53. The float(1) to float(23) will create the Single Precision 32-bit column, which is actually Real data type. Hence SQL Server automatically maps it into Real data type.

**What is a float in SQL?**

Float is **an approximate number data type used to store a floating-point number**. float (n) – n is the number of bits that are used to store the mantissa in scientific notation. Range of values: – 1.79E+308 to -2.23E-308, 0 and 2.23E-308 to 1.79E+308. Storage size: 4 Bytes if n = 1-9 and 8 Bytes if n = 25-53 – default = …

**What type of data is 12345?**

12345 is a **numeric literal**. If you end the an integer with an L then it assumed to be a long. You can also specify integers in a number of different number bases. If you start a number off with a 0x then it is taken to be in hex and if you start it with 0b then it is binary.

**What is temp table in SQL?**

What is a temp table? As its name indicates, **temporary tables are used to store data temporarily** and they can perform CRUD (Create, Read, Update, and Delete), join, and some other operations like the persistent database tables.

**What is indexing in SQL Server?**

An index **contains keys built from one or more columns in the table or view**. These keys are stored in a structure (B-tree) that enables SQL Server to find the row or rows associated with the key values quickly and efficiently. SQL Server documentation uses the term B-tree generally in reference to indexes.

**What is execute in SQL?**

The EXEC command is **used to execute a stored procedure, or a SQL string passed to it**. You can also use full command EXECUTE which is the same as EXEC.

**What are the 5 types of data?**

** 6 Types of Data in Statistics & Research: Key in Data Science **

- Quantitative data. Quantitative data seems to be the easiest to explain. …
- Qualitative data. Qualitative data can’t be expressed as a number and can’t be measured. …
- Nominal data. …
- Ordinal data. …
- Discrete data. …
- Continuous data.

**What is VARCHAR2 in SQL?**

The VARCHAR2 data type **specifies a variable-length character string in the database character set**. You specify the database character set when you create your database. When you create a table with a VARCHAR2 column, you must specify the column length as size optionally followed by a length qualifier.

**What is SQL string?**

In sql, string data types are **used to store any kind of data in the table**. In string data types, we have an option to allow users to store either the fixed length of characters or huge length data based on their requirements.

**What is difference between decimal and float?**

**Float stores an approximate value and decimal stores an exact value**. In summary, exact values like money should use decimal, and approximate values like scientific measurements should use float. When multiplying a non integer and dividing by that same number, decimals lose precision while floats do not.

**What is difference between decimal and float in SQL?**

Float is Approximate-number data type, which means that not all values in the data type range can be represented exactly. Decimal/Numeric is Fixed-Precision data type, which means that all the values in the data type range can be represented exactly with precision and scale. You can use decimal for money saving.

**What are the 5 data types?**

Most modern computer languages recognize five basic categories of data types: **Integral, Floating Point, Character, Character String, and composite types**, with various specific subtypes defined within each broad category.

**What is a numeric in SQL?**

Exact SQL numeric data type means that **the value is stored as a literal representation of the number’s value**. The approximate numeric data types are FLOAT(p) , REAL , and DOUBLE PRECISION . These represent real numbers, but they are not represented as exact numbers in the database.

**What is mode formula?**

In statistics, the mode formula is defined as the formula to calculate the mode of a given set of data. Mode refers to the value that is repeatedly occurring in a given set and mode is different for grouped and ungrouped data sets. Mode = L+h(fm−f1)(fm−f1)−(fm−f2) L + h ( f m − f 1 ) ( f m − f 1 ) − ( f m − f 2 )

**What is the mode of 123?**

There is **no mode**.

**What is the modulus of a number?**

The modulus of a number is **its absolute size**. That is, we disregard any sign it might have. Example The modulus of −8 is simply 8.

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