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A LEFT JOIN retrieves all records from TableA and the matching records from TableB. If no match exists, the TableB fields are NULL. Filtering on TableB.id IS NULL ensures only those records from TableA with no match in TableB are selected. Why Other Options Are Incorrect: 1. INNER JOIN: Retrieves only matching records, not unmatched ones. 2. RIGHT JOIN: Retrieves unmatched records from TableB, not TableA. 3. FULL OUTER JOIN: Includes all unmatched records but does not isolate TableA exclusively. 4. NOT IN: Functional but less efficient than LEFT JOIN.
If the Government refuses to introduce (A)/changes now, it will be (B)/demonstrating its contempt for (C)/democracy, public concern and animal welfare (...
Parts of the following sentence are given as options. Identify the segment that contains a grammatical error.
No sooner did the ship touch the ...
I immediately quitted (1)/ the job in which (2)/ neither the skill nor (3)/ knowledge was required. (4)/ No error (5)
The following sentence has been split into segments. One of them may contain an error. Identify the segment that contains a grammatical error. If you d...
This is (1)/ not my property (2)/ but someone’s else (3)/ No error (4)
In these questions, some of the sentences have errors and some have none. Find out which part of a sentence has an error and indicate corresponding to t...
Given below is a sentence with or without an error. The error, if any, is in one part of the sentence. Choose the correct part which contains the error...
"This question consists of a sentence which is divided into four parts numbered (1) to 4. only one part of the sentence is not acceptable in standard w...
Angered over the delay in giving compensation; factory workers shouted slogans against the president when he reaches the office.