merge and append inside power query in power bi

Описание: Download 1M+ code from https://codegive.com/049e888
sure! in power bi, power query is a powerful tool used for data transformation and preparation. two common operations in power query are "merge" and "append." both functions help you combine data from different tables or sources, but they do so in different ways.

merge in power query

*merge* is used to combine two or more tables based on a related column (or columns). this is similar to sql join operations (inner join, left join, etc.). when you merge tables, you create a new table that contains columns from both tables based on the matching values.

steps to merge tables

1. **load the tables**: load the tables you want to merge into power query.

2. **select the primary table**: in the power query editor, select the primary table you want to merge.

3. **merge queries**:
go to the “home” tab in the ribbon.
click on “merge queries.”
in the dialog, select the second table you want to merge with and choose the matching column(s).
choose the type of join (e.g., inner, outer, left outer, right outer) based on your requirements.
click ok.

4. **expand the merged table**: after merging, you’ll see a new column containing a table. click on the expand button (two arrows icon) next to the new column to select which columns you want to include in your final table.

5. **finish and load**: once satisfied with your merged table, click on “close & apply” to load the data back to power bi.

example code for merge

here’s an example m code for merging two tables, `sales` and `products`, based on a common column `productid`.



append in power query

*append* is used to stack two or more tables on top of each other, essentially combining their rows. the tables must have the same structure (i.e., the same number of columns and compatible data types).

steps to append tables

1. **load the tables**: load the tables you want to append into power query.

2. **select the first table**: in the power query editor, select the first table you want to app ...

#PowerQuery #PowerBI #numpy
Merge Queries
Append Queries
Power Query
Power BI
Data Transformation
Query Editor
Data Combination
Data Merging
Query Management
Table Append
Data Integration
ETL Process
Data Modeling
Transform Data
Advanced Query Techniques