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The query returns the restaurant that serves both of these items; I am trying to create a query that checks if inputted drink is LIKE text in both drinkvariety & drinkname columns in Drinks table, and that checks if inputted food is LIKE text in both foodcategory and foodname in Food table. Only when the query inputted placeholders are LIKE ...
It makes me wonder where did you get that idea of using ":letter" placeholders with raw mysqli. Nowhere in the manual can be seen such a syntax.
WHERE is the same as in SQL, i.e. it defines a filter/where-clause for the select query; o.ctr would mean that the property ctr in the ctrData entity (as aliased by o) should be checked:ctr is a named parameter, i.e. a placeholder so that the framework knows where to put the value for the parameter named ctr (see param.put("ctr", ctr);)
This is my query: select * from Table1 where Identifier = 'ABC' and Identifier_Type like ':name%:id' can I ...
I have a query that is passing the current year as a placeholder parameter that right now is hard coded. How can I have this just pass the current year? I've seen a few different potential solutions but most of them are in HANA Studio or involve dynamic SQL generation. I'm putting the SQL into Tableau so those are both off the table.
Not 100% sure about SQLite, but usually those "placeholders" are called parameters and you suppose to use them differently:
To generate a query, I need to pass an array of tags (essentially primary keys), but these have to be inserted as strings. As this will be a modular query and used for multiple tags, a placeholder is being used. The query relies upon the use of the WHERE IN statement, which is where the placeholder is, like below:
It gets its text from the placeholder attribute that I defined where I used the directive (attr(placeholder)). Another key factor is pointer-events: none - this allows clicks on the placeholder text to pass through to the select. Otherwise it won't drop down if the user clicks the text.
Currently need the placeholder to remain the placeholder until a user chooses an option, however at the moment the placeholder is removed as soon as the user clicks the dropdown box for options. How ...
The short answer is that you can't; parameters are only supported for values, not for column names.. You either have to fall back on direct text insertion as Richard has said (whether this happens in code or via the use of the SQL Server exec() function), or use some kind of a library (like LINQ) that lets you construct queries dynamically and then converts that into a text representation.