How do I check if a table is referenced in SQL?

How do I check if a table is referenced in SQL?

To view the objects on which a table depends

1. In Object Explorer, expand Databases, expand a database, and then expand Tables.
2. Right-click a table, and then click View Dependencies.

How do I see table dependencies in SQL Developer?

You can actually see the queries that SQL Developer runs under the hood. If you go to to the View menu and choose Log, or hit Ctrl Shift L (assuming you’re using Windows) you’ll get a docked window which by default is titled “Messages – Log”. At the bottom of that are two tabs, with “Messages” selected.

How write if exists in SQL Server?

The following code does the below things for us:

1. First, it executes the select statement inside the IF Exists.
2. If the select statement returns a value that condition is TRUE for IF Exists.
3. It starts the code inside a begin statement and prints the message.

How do I find all foreign key references to a table in SQL Server?

The most Simplest one is by using sys. foreign_keys_columns in SQL. Here the table contains the Object ids of all the foreign keys wrt their Referenced column ID Referenced Table ID as well as the Referencing Columns and Tables.

How to find out if a cell is referenced in another cell in Excel?

Find out if a cell is referenced or not in Excel 1 Select the cell which you want to find out whether it is referenced or not by any formulas. 2 Then click Formulas > Trace Dependents. See screenshot: 3 After activating the Trace Dependents function, you can see there are arrows displaying in the worksheet.

How to find all tables that have foreign keys that reference?

1. Open phpMyAdmin 2. On the left click database name 3. On the top right corner find “Designer” tab All constraints will be shown there. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers.

How to find records from one table which does not exist?

SELECT CALL.* FROM CALL LEFT JOIN Phone_book ON CALL.id = Phone_book.id WHERE Phone_book.name IS NULL SELECT t1.ColumnID, CASE WHEN NOT EXISTS ( SELECT t2.FieldText FROM Table t2 WHERE t2.ColumnID = t1.ColumnID) THEN t1.FieldText ELSE t2.FieldText END FieldText FROM Table1 t1, Table2 t2

How to find records from two table in SQL?

With large tables the database will most likely choose to scan both tables. You should create indexes both Phone_Book and Call containing the phone_number. If performance is becoming an issue try an lean index like this, with only the phone number: The fewer fields the better since it will have to load it entirely.