I am using solr to do product search on a csv. The csv contain multiple columns. Is it possible to get the column name where the solr is getting result from along with the complete row?
my search query: "q=XMC LS"
The CSV looks something like:
Is it possible to get column name "Product" along with the result that is already there?
yes, you can use Highlighting for that. You highlight every field you search on, and then you will get info on what text, and on what field, matched the query. Look at the docs, there are several different highligthers and many params for each of them.
Related
First, I'll ask the question:
Is it possible to make a value's type 'dynamic' by creating different tables with different value types and use a simple join query to fetch the correct table based on the type specified in a column?
Here is the context:
I'm building a sort of page builder where I want the "modules" to be dynamic in the sense that I can create new modules without having to modify the database in any way.
I envision 4 entities:
A field, which represents a single value of a specific type, for example a text field or a checkbox;
An entry type, which represents a group of fields to be used for an entry. For example, Article = Title + Content + Image.
An entry, which is the content defined by the corresponding entry type.
A value, which contains the data for one field for one entry, defined by the field's value type.
For the 'value' entity, I was planning on using multiple tables for each "type of value". "value_text", "value_integer", "value_boolean", etc.
What I wanted to do (and I think it's an anti-pattern in relational database) was to grab a value in the fields table to select the proper "value" table.
Here is an image of the structure I envisioned:
(imgur) UML Diagram of DB
So I'm looking for a way to make a single query to fetch the correct value for each field of a specific entry (by ID).
This means I have to access the assigned entry_type, fetch all the fields related to that entry_type, then fetch the value of each of those fields from the value tables based on the column 'value_type' of the fields table.
If this is possible, how can I achieve this? If it's not possible, what would be the best way to tackle this problem:
Make a first query to retrieve the fields, then a query for each field to grab the correct value? This makes a lot of queries to get the values of a single entry...
Modify the structure of the database to a more efficient set of relations, taking into account everything is dynamic...
Get rid of the idea of using mutiple "value types" and stick to using a more common everything-is-serialized-text approach.
Also, as this is one of my first questions on StackOverflow, please let me know if I asked incorrectly and how I should formulate this in the future.
Thanks for all of you who even take the time to read this :)
I would like to get more or less what is discussed in this question.
What more? I would like to redirect the output to a file.
What less? The SHOW columns FROM your-table; actually returns a lot of stuff. In addition to column names it also shows i.e. type.
Ideally, in the end, I would like a plain text file listing one column name per line.
Consider a webpage with a keyword "A". I want to make sure that this page will not be in the search result when a user searches with a keyword "A". Please let me know how can I do this.
I would suggest excluding all keywords three letters or less that are found in the dictionary. You could also setup a blacklist table of keywords that should not be used for finding search results.
I have a pivot table in Excel. I have field headings on my other sheet I have got the date in them that correspond with a name.
When I make the pivot table all of the columns that have different amounts of data in them all show the same total. It is almost like it is counting the blanks.
Please look at the pictures and tell me if I am doing something wrong.
It probably is counting the blanks -- even though there is nothing in the cell, there may be formatting or other aspects that the pivot will include in the count. To fix this, you can either:
Filter your raw data and filter each column to just show the (Blanks). Highlight the entire column and press delete
Instead of "Yes" use 1. In your pivot instead of "Count" choose the value field setting of "Count Numbers"
I have a bunch of queries that I would like to dump directly to CSV. Everything works great EXCEPT there is no option to include the column names from the query (not necessarily the same as the underlying table column names). From looking around, it appears that doing a union with the column names is the only way to do what I want. My problem is:
How can I programmatically get the column names from my query?
The column names are not the same as the underlying table, so I cannot use the Information Schema.
Please let me know if you have any ideas or a better way to accomplish what I'm doing!
Thanks!
There's an article here:
http://giantdorks.org/alain/export-mysql-data-into-csv-or-psv-files/
That talks about sending SELECT output directly to a file and then modifying the text until it becomes a valid csv file. That seems to support column headers from the select statement.