How do you pivot a table in SQL Server?

Asked By: Amaranto Guindulain | Last Updated: 11th March, 2020
Category: technology and computing databases
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Introduction to SQL Server PIVOT operator
You follow these steps to make a query a pivot table: First, select a base dataset for pivoting. Second, create a temporary result by using a derived table or common table expression (CTE) Third, apply the PIVOT operator.

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Also, how does SQL pivot work?

PIVOT rotates a table-valued expression by turning the unique values from one column in the expression into multiple columns in the output. And PIVOT runs aggregations where they're required on any remaining column values that are wanted in the final output.

Secondly, how do you use pivot and Unpivot in SQL? The PIVOT statement is used to convert table rows into columns, while the UNPIVOT operator converts columns back to rows. Reversing a PIVOT statement refers to the process of applying the UNPIVOT operator to the already PIVOTED dataset in order to retrieve the original dataset.

Beside this, how do I create a dynamic pivot table in SQL Server?

In this puzzle, we're going to learn how to create a dynamic pivot table using SQL Server. A dynamic pivot table is a great way to summarize data.

Creating a Dynamic Pivot Table – Step-By-Step

  1. Get a list of unique product lines.
  2. Create a column list.
  3. Construct a Pivot Table as SQL Statement.
  4. Execute the statement.

How do I pivot data in SQL?

The pivot column is the point around which the table will be rotated, and the pivot column values will be transposed into columns in the output table. The IN clause also allows you to specify an alias for each pivot value, making it easy to generate more meaningful column names.

38 Related Question Answers Found

What does pivot mean in SQL?

The SQL Server (Transact-SQL) PIVOT clause allows you to write a cross-tabulation. This means that you can aggregate your results and rotate rows into columns.

How do I pivot columns to rows in SQL?

Converting Columns to Rows – UNPIVOT
UNPIVOT is another relational operator in SQL Server that performs almost the reverse operation of PIVOT, by rotating column values into rows values. Let me demonstrate this with an example; lets create a table with pivoted data from the previous query with the script below.

What is dynamic query?

Dynamic queries refer to queries that are built dynamically by Drupal rather than provided as an explicit query string. All Insert, Update, Delete, and Merge queries must be dynamic. Select queries may be either static or dynamic. Therefore, "dynamic query" generally refers to a dynamic Select query.

What is pivot table in mysql?

Briefly about Pivot tables
This article deals with the transformation of table data from rows to columns. Such transformation is called pivoting tables. Often, the result of the pivot is a summary table in which statistical data are presented in the form suitable or required for a report.

How does pivot work in Oracle?


Oracle 11g introduced the new PIVOT clause that allows you to write cross-tabulation queries which transpose rows into columns, aggregating data in the process of the transposing. As a result, the output of a pivot operation returns more columns and fewer rows than the starting data set.

What is coalesce in SQL?

What is COALESCE? COALESCE is a built-in SQLServer Function. Use COALESCE when you need to replace a NULL with another value. It takes the form: COALESCE(value1, value2, , valuen) It returns the first non NULL from the value list.

What is a dynamic pivot table?

Pivot Table Dynamic Data Source. Create a pivot table that is based on a dynamic data source -- that is a range that adjusts automatically, if data is added or removed.

What is dynamic table in SQL?

Basically dynamic SQL allows you to construct a SQL Statement in the form of a string and then execute it. This is the ONLY way you will be able to create a table in a stored procedure.

What is stuff in SQL?

Description. In SQL Server (Transact-SQL), the STUFF function deletes a sequence of characters from a source string and then inserts another sequence of characters into the source string, starting at a specified position.

What is for XML Path in SQL Server?


SQL FOR XML PATH. The Path mode with FOR XML in SQL Server returns a result set as the XML element. Unlike other XML modes, this SQL FOR XML PATH mode provides control over the generated XML file. It is because FOR XML path mode treats column names and alias names as the XPath expression.

How do I create a dynamic column in a temporary table in SQL?

Answers
  1. create table #temp(dummy bit);
  2. Declare @Script as Varchar(8000);
  3. Declare @Script_prepare as Varchar(8000);
  4. Set @Script_prepare = 'Alter table #temp Add [?] varchar(100);'
  5. Set @Script = ''
  6. Select.
  7. @Script = @Script + Replace(@Script_prepare, '?', [Key])
  8. From.

How do I use items in SQL Server?

The STUFF function inserts a string into another string. It deletes a specified length of characters in the first string at the start position and then inserts the second string into the first string at the start position.

How do I Unpivot a table?

Unpivot Data Using Power Query
  1. Select any cell in the dataset.
  2. Go to the Insert Tab.
  3. Click on the Table icon.
  4. In the 'Create Table' dialog box, make sure the range is correct.
  5. Click OK.
  6. With any cell selected in the Excel Table, click on the Data tab.

What does Unpivot mean?

unpivot. Verb. (third-person singular simple present unpivots, present participle unpivoting, simple past and past participle unpivoted) (computing, databases) To convert columns into rows, so as to undo a pivot operation.

Can we use Pivot without aggregate function in SQL Server?


Pivoting Without Aggregation. The PIVOT operator is a useful tool. It lets you aggregate and rotate data so that you can create meaningful tables that are easy to read. However, there are times when you might not want to aggregate data while pivoting a table.

How do you identify object dependencies in SQL Server?

Using SQL Server Management Studio
  1. In Object Explorer, expand Databases, expand a database, and then expand Tables.
  2. Right-click a table, and then click View Dependencies.
  3. In the Object Dependencies<object name> dialog box, select either Objects that depend on <object name>, or Objects on which<object name>depends.

What is Outer apply in SQL Server?

OUTER APPLY in SQL Server. OUTER APPLY returns both rows that produce a result set, and rows that do not, with NULL values in the columns produced by the table-valued function. OUTER APPLY work as LEFT OUTER JOIN.