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In SQL Server Management Studio 2012, I was typing/pasting data into a table (via Edit Top 200 Rows). Whenever I typed/pasted NULL in a cell, a NULL value was inserted. Apparently it thought I meant the NULL value instead of the 'NULL' text. Which didn't work, as my column wasn't nullable...
Now how do I enter the 'NULL' text into a cell?
If I wanted to insert the NULL value, I would have pressed Ctrl+0...
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To set a specific row on a specific column to null use: Update myTable set MyColumn = NULL where Field = Condition. This would set a specific cell to null as the inner question asks.
You also can specify the NULL keyword in the VALUES clause to indicate that a column should be assigned a NULL value. The following example inserts values into three columns of the orders table: INSERT INTO orders (orders_num, order_date, customer_num) VALUES (0, NULL, 123);
NULL can be assigned, but using ' = NULL ', ' <> NULL ', or any other comparison operator, in an expression with NULL as a value, is illegal in SQL and should trigger an error. It can never be correct.
If the value of expression is NULL, IS NULL returns TRUE; otherwise, it returns FALSE. If the value of expression is NULL, IS NOT NULL returns FALSE; otherwise, it returns TRUE.
Just press CTRL + 0 (why should the answer body longer than 30 cars?)
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Just enter 'NULL' (with single quote mark) into cell, SSMS will trim leading and ending single quote mark and save it as string 'NULL'.
Without single quote mark, SSMS will treat input as NULL.
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