netlog | A lightweight , HTTP-centric , log-based | Pub Sub library
kandi X-RAY | netlog Summary
kandi X-RAY | netlog Summary
A lightweight, HTTP-centric, log-based (Kafka-style) message queue.
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QUESTION
I only have version 5.5 of MySQL so the ROW_NUMBER() function does not exist. Using this as a test table:
...ANSWER
Answered 2020-Nov-14 at 19:50You can't interpolate subqueries with a user-defined variable. Variables take the place of a scalar value only, not expressions or subqueries or identifiers or anything else. Only use a variable where you would otherwise use a single string or numeric literal.
Here's a solution:
QUESTION
I'm not understanding the output I get from this query. Each column is being duplicated, so instead of getting the 7 columns requested, I'm getting 14, each next to its duplicate, but with no header. Here is my code:
...ANSWER
Answered 2020-Sep-06 at 17:53It looks like your fetch is defaulting to retrieve both associative and numeric-indexed arrays, so it outputs both to the file. You could try specifying that it is only to retrieve either one or the other. I can't see how your data is actually fetched, that must be in your include file.
If you're on mysqli, fetch_array()
defaults to MYSQLI_BOTH
which will do as your comment suggests. Instead, specify MYSQLI_ASSOC
or MYSQLI_NUM
when the data is retrieved.
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