You cannot specify offset in DELETE‘s LIMIT clause. So the only way to do that is to rewrite your query to something like: DELETE FROM `chat_messages` WHERE `id` IN ( SELECT `id` FROM ( SELECT `id` FROM `chat_messages` ORDER BY `timestamp` DESC LIMIT 20, 50 ) AS `x` ) Supposing that you have primary key … Read more
You can use jQuery $(“select”).change(function () { if($(“select option:selected”).length > 3) { //your code here } });
I’ve worked around this using SUBSTRING_INDEX. For example: SELECT SUBSTRING_INDEX(GROUP_CONCAT(Field1 SEPARATOR ‘,’), ‘,’, [# of elements to return]) FROM Table1;
See RFC 2822, section 2.1.1 to start. There are two limits that this standard places on the number of characters in a line. Each line of characters MUST be no more than 998 characters, and SHOULD be no more than 78 characters, excluding the CRLF. As the RFC states later, you can work around this … Read more
LIMIT only stops the number of results the statement returns. What you’re looking for is generally called analytic/windowing/ranking functions – which MySQL doesn’t support but you can emulate using variables: SELECT x.* FROM (SELECT t.*, CASE WHEN @category != t.category THEN @rownum := 1 ELSE @rownum := @rownum + 1 END AS rank, @category := … Read more
Known limits There are multiple repo size limits which apply. Soft limit As of 2022, as per the docs, this is 5 GB. If you exceed this limit, is possible that you will receive an email from GitHub Support. We recommend repositories remain small, ideally less than 1 GB, and less than 5 GB is … Read more
In Python 3.7 and newer, there is no limit. This is the result of work done in issue #27213 and issue #12844; #27213 reworked the CALL_FUNCTION* family of opcodes for performance and simplicity (part of 3.6), freeing up the opcode argument to only encode a single argument count, and #12844 removed the compile-time check that … Read more
I like more another approach described in a similar question: https://stackoverflow.com/a/11885521/2215679 This approach is better especially in case if you need to show more than one field in SELECT. To avoid Error Code: 1241. Operand should contain 1 column(s) or double sub-select for each column. For your situation the Query should looks like (this query … Read more
You can avoid this issue by adding an unneeded ORDER BY clause to the query. SELECT * FROM object_values WHERE (objectID = 53708) ORDER BY timestamp, objectID DESC limit 1;
I achieved this a slightly different way. I just remove the old dropped file any time a new file is added. It acts as overwriting the file which was the user experience I was going for here. Dropzone.options.myAwesomeDropzone = { accept: function(file, done) { console.log(“uploaded”); done(); }, init: function() { this.on(“addedfile”, function() { if (this.files[1]!=null){ … Read more