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How can I write a query to aggregate multiple strings into one field? [migrated]

I am trying to merge three tables. The first table has id and data_name, second table data_id, option_id and property, third table user_id, data_id. For example: first table +----+-----------+ | ...
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3answers
133 views

T-SQL - How to split (char separated) string into rows and columns

What is the best way to split a char separated string into rows and columns? Here is my input string: !1;100;10;200;0;500;2;1000;30!2;100;3;500;1;2000;5 And here is my desired output table: Id ...
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0answers
122 views

How do I cast a varchar to Bigint in DB2

I have a field which is varchar(25) and I need to create a join between that field and a field that is a bigint So I guess I need to convert the field into bigint aswell but it's giving me some ...
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1answer
52 views

MySQL distinct string

I have the following sample table. drop table if exists fruit; create table fruit ( id int not null auto_increment primary key, tag varchar(100) not null ); insert into fruit (tag) ...
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0answers
66 views

MySQL count similar words in strings

I have the following sample table. drop table if exists fruit; create table fruit ( id int not null auto_increment primary key, tag varchar(20) not null ); insert into fruit (tag) ...
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0answers
28 views

How to generate a random character string of length 8 in Netezza?

I am trying to generate a random character string of length 8 in Netezza, any suggestions?
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0answers
74 views

Saving String as unique number in Mongo

I have a field in my collection which is a String in nature. When i run aggregation for this field in data it takes considerable time in aggregation. Total 6 million records are in collection which ...
0
votes
1answer
57 views

Does PostgreSQL have a variable character storage layer that optimizes storage space by automatic dedupe?

My application has a Product and a Purchased table. The Purchased table includes a full copy of the Product row at time of purchase, so that, even if a product name or description was changed, the ...
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1answer
74 views

Filtering the results of a SELECT query to avoid certain words in the value of a column?

I have a table called videos with a column named title and there is a set of words (around 50 words as of now but the number of words may increase) which is the knowledge base for filtering the ...
3
votes
1answer
299 views

Using an index for both asc and desc on a string column

I know a trick to make order by queries faster when we want to order by asc and desc. For integers store a negated value. So if I store -7,-11,-8,-5,-1,-2 the order by asc will give -11, -8, -7, 5, ...
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0answers
29 views

Order by Like Value and Count

My Name field values are "Name1 (AB)", "Name2 (AB)", "Name3 (CD)", "Name4 (EF)", etc. Is it possible to count the total "%(AB)" and the total "%(CD)" etc...in one query or will it require a sub query? ...
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3answers
376 views

Removing a string prefix

I have a string of numbers that I need to trim a portion from using TSQL. The string of numbers will always start with 101 then it will have a set of 0s and a set of random numbers. Example: ...
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0answers
29 views

Storing IDs of strings instead of strings?

I store every visit of a user to our site. In the table describing users (not visits!) I store his device name, device type (desktop, mobile, tablet), device manufacturer, browser name and version, ...
0
votes
1answer
102 views

MYSQL testing string field contains another altered string field

I have this table : mysql> desc mytab; +------------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | ...
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votes
6answers
64k views

Connect to sql plus from command line using connection string

Let's say I have a Oracle database. I have a username = x, password = y, database = z. Also I know the port = a, SID = b, Hostname = c. So how do I need to connect correctly? I used many options ...
0
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1answer
831 views

Split values from field and count them according to another field

I have following MySQL db structure: content ======= id | tags --------- 1 | ,abc,def,ghi, 2 | ,abc,foo, 3 | NULL 4 | ,foo,bar, categories ========== id -- 1 2 categories_to_content ...
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1answer
882 views

Looping through string, adding all numbers e.g. '123' = 1+2+3, demo with working loop included

This works to output the string 123456 as: 1 2 3 4 5 6 Code: declare @string varchar(20) declare @index int declare @len int declare @char char(1) set @string = '123456' set @index = 1 set @len= ...
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1answer
3k views

How to convert bytea to text value in postgres?

In my application I insert data in database using C code, since the strings I receive from an untrusted source I have escaped them using PQescapeByteaConn of libpq library. Which is working perfectly ...
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0answers
149 views

How to use variables in file paths in MySQL statements?

I have now a problem that I have to set paths through variables in queries like load data infile '/my/file/path/to/file.txt' into table database1.table2 fields terminated by '' lines terminated ...
3
votes
1answer
401 views

Splitting different parts of a string

I have an SQL Server database where there is a cell with a delimiter (\) separated string. An example of this string would be: category_path ============= RootCategory\Middle Category\Child ...
1
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2answers
266 views

Reason for using hexadecimal in NCHAR()?

I found this in some source code today: SELECT @Error = ERROR_NUMBER (), @ErrorMsg = N'An Error occured while populating the TABLE ' + @DestinationTableName + ...
4
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3answers
18k views

T SQL Table Valued Function to Split a Column on commas

I wrote a Table Valued Function in Microsoft SQL Server 2008 to take a comma delimited column in a database to spit out separate rows for each value. Ex: "one,two,three,four" would return a new table ...