Questions tagged [string-searching]
For questions about searching a string for matches
44
questions
0
votes
2answers
18 views
Get matching part from conditional pattern
I'm having a table like this:
|id|key |value |
------------------------
| 0|name |Homer |
| 1|surname|Simpson |
| 2|town |Springfield|
I'm running this query:
SELECT *
FROM ...
2
votes
2answers
31 views
How to find exact string from a sentence
I'm using SQLITE and I'm trying to find the exact word on a sentence, but I'm not getting just the word I'm getting for instance if I'm looking for Water I'm getting also aWater, wateri24 and that's ...
4
votes
3answers
731 views
How to determine if a hyphen (-) exists inside a column
In a CASE expression, I'm trying to search inside a text column to identify a hyphen (-):
CASE
WHEN SUBSTRING(al.ALT_ADDRESS,1,1) IN('1','5','7')
AND al.NEW_ADDRESS CONTAINS '-'
...
1
vote
0answers
30 views
Searching for and parsing out specific text parts within the values of a column
I'm working on a CASE expression that I need to have in order to search for, and parse out, specific text values.
Sometimes the relevant column will contain a person's name, and sometimes it will ...
0
votes
1answer
27 views
How to search for a string in all columns of a table?
I use postgresql database and the need is to return all the rows that contain a given string in any column of that table. For example, I have a table like this.
I need a query to return all rows that ...
-4
votes
1answer
49 views
which is the appropriate database for my use case [closed]
I have a set of n sentences (n >= 100k).
I want to perform queries of the sort where given a set of n_i sentences i return a set of m_i words that is present in one subset of n_i sentences and not ...
0
votes
1answer
38 views
Search for partial matches in website domain names
I have a Postgres database with information about websites and a table called sites with a column host. This already has an index for text pattern operations which is excellent for searching from the ...
3
votes
1answer
136 views
T-SQL LIKE Predicate failed to match with whitespace in XML converted varchar
Recently I attempt to search for a particular pattern by converting XML data into varchar(max) although I'm aware it's not the best practice and found out it's not working as expected:-
Setup
...
0
votes
1answer
14 views
duplicate entries from mysql LIKE query
with this sample dataset
I have this query
SELECT products.id,
products.title AS product_title,
products.code,
products....
8
votes
2answers
302 views
Fastest way to split/store a long string for charindex function
I have a 1 TB string of digits. Given a 12-character sequence of digits I want to get the start-position of this sequence in the original string (charindex function).
I have tested this with a 1GB ...
0
votes
1answer
289 views
How can I search for a hex string in oracle?
There's a database record that is incorrect. The name field displays like this in a browser ( this is incorrect ):
Thcˇodore
And when I look at the record via SQL results, I see:
Thc\xCB\x87odore
...
0
votes
2answers
126 views
Query performance of searching pattern
Posted the same question on SO, but did not get answer.
As per Andrey Nikolov comment, tried with Trigram, but the table name and column(more than 50 columns) are dynamic i mean will get from front ...
3
votes
1answer
178 views
Find records with same string with extra character
OK, so I have a Microsoft SQL Server 2014 database table called owner with around 90,000 records with owner information, another called vehicle with vehicle information
Owner_Name ...
0
votes
1answer
44 views
Which option is better to search in two tables in varchar columns? [duplicate]
I have a performance problem with searching in varchar columns in SQL Server 2016. Considering these tables have plenty of rows, for example 60000 rows each one.
Tables
CREATE TABLE Persons (
...
1
vote
1answer
45 views
Use extra column to save an unaccented copy of a string instead of using unaccent module [closed]
I am heavily using the unaccent module in a table with 500.000 rows where each row contains proportionally a lot of accented characters.
The issue I am facing is that my queries have become time ...
2
votes
1answer
106 views
How to search Query Store for a specific word or command in a query?
I have an Enterprise Edition of SQL 2016 SP1, that has a database with Query Store active.
I want to search for a specific word or command in the saved queries. I have googled around and not seen ...
0
votes
1answer
404 views
Can a Postgres LIKE statement return an exact match?
I'm trying to search a Postgres table using LIKE and %, but the query is not returning results.
The column local_username will contains values formatted like: username@domain.local OR username@domain....
2
votes
0answers
744 views
Use LIKE in column with arabic
I have a SQL Server 2012 DB with a column that includes Arabic text. The column is nvarchar(MAX) with collation Arabic_CI_AI_KS_WS. To test if LIKE searches are working I copied some of the text ...
0
votes
1answer
33 views
TSQL - Finding Similar Values
I have a static table containing filenames (StaticFilesTbl).
Each day a file is sent in that is stored in DailyFilesTbl.
The filenames in DailyFilesTbl will be different from StaticFilesTbl in that ...
1
vote
1answer
534 views
Search entire database(210 tables) for a unique Id (PK) and get the table name
Rewritten Question:
I need to look through an entire database, 210 tables for a unique ID that is a number.
I have limited access to my database through things called nodes (Visual programming.)
...
2
votes
1answer
934 views
How do I find a job that sends a specific email?
I had a job sending an irrelevant email to a group of users.
The title of the email was Staging -> [AUPAIR] arrivalDate trigger issue.
When I query the jobs table in the msdb database using the ...
1
vote
1answer
116 views
How to search for compound words, and get the word parts returned
I need to be able to search for compound words like "menneskerettighedsforkæmperens" (the human rights activist's) and find the words "menneske" (human), "rettighed" (right) and "forkæmper" (activist)....
9
votes
5answers
2k views
Matching a ] (closing square bracket) with PATINDEX using the “[ ]” wildcard
I am writing a custom JSON parser in T-SQL†.
For the purpose of my parser, I am using the PATINDEX function that calculates the position of a token from a list of tokens. The tokens in my case are ...
5
votes
4answers
22k views
Find if any of the rows partially match a string
I want to see if a table contains any sub-string of a given string.
Let's say I have a string
somedomain.com
In database I have:
blabladomain.com
testdomain.com
domain.com
I need to make a ...
0
votes
1answer
630 views
why my split string functions are not working with large OBJECT_DEFINITION?
I have in one of my databases a stored procedure
called PROCEDURE [repl].[usp_upd_repl_out_application], that is not exactly a very clever stored procedure but it has over 389 lines.
As I need to ...
3
votes
4answers
4k views
ERROR: operator does not exist: text[] ~~ text
We have an easy syntax that allows us to look into an array for a single scalar,
SELECT 'foo' = ANY(ARRAY['foo', 'bar', 'baz']);
We can use the same method to match with LIKE
SELECT 'foobar' LIKE ...
1
vote
1answer
1k views
Using LIKE to search case insensitive over language specific characters (PostgreSQL)
Using a PostgreSQL database (Collation C, Encoding UTF8) we store data from various languages. This means we also get the special characters for free (e.g. Å, å, ...)
Within an application we now ...
1
vote
2answers
1k views
Return results that contain or do not contain punctuation
Is there a way within MySQL to return results using a LIKE statement that contain or do not contain punctuation characters such as apostrophes and hyphens?
For example if I have one of the following ...
1
vote
1answer
330 views
Count number of occurrences of a phrase in ntext
I am trying to create a function for counting the number of occurrences of a phrase in a ntext value.
This my function's code:
alter FUNCTION [dbo].[PhraseCounter] ( @pInput NTEXT, @pSearchPhrase ...
2
votes
1answer
271 views
Search on concatenate columns
I have this :
CREATE TABLE users
(
first_name varchar(60) NOT NULL,
last_name varchar(60) NOT NULL
);
INSERT INTO users
(first_name, last_name)
VALUES
('Sylvia ', 'Hoeks'),
('...
3
votes
1answer
89 views
patindex parser
I am trying to parse a string column matching it against several patterns. I have code that does not produce the desired results.
This is a sample table:
-- demo data
IF OBJECT_ID('dbo.Input', 'U') ...
19
votes
3answers
2k views
What is it called when you search the middle of a string instead of the beginning?
I am trying to polish up my vocabulary to better communicate with my fellow developers. We have several places in the site where we are debating if we should search for a string from the beginning '...
1
vote
1answer
352 views
Querying an array of strings with a string that represents search terms
I have an array of values like:
array ('hello world', 'foo', 'bar') -- terms here have only letters and one space at most
and some text like: 'foo hello-world hello1world'
and I would like to get ...
2
votes
0answers
40 views
How to implement a “Command T” (VIM) -like search
I am thinking of implementing a string search similar to the command-t search in VIM. The context is almost the same: Finding Files in a Webapp.
It's not easy to explain how the command-t search ...
0
votes
1answer
63 views
How to fetch records from table which has csv
Please guide me about following case. I need to fetch records from a table which has a column like shown in the picture. I need to fetch records which has 065 and AMT campaigns only.
I tried:
SELECT ...
2
votes
1answer
475 views
Using SELECT within to_tsvector call in CREATE INDEX
I'm attempting to create a GIN index for full-text search on a field that may have text in it that is one of several different languages. The languages are pre-set and we'll know which language we ...
2
votes
3answers
1k views
Autocomplete too slow: possible optimizations?
The autocomplete search functionality of my website searches a varchar field which contains the model number of sale items.
This field can contains strings varying from 1 to 75 characters and the ...
2
votes
1answer
122 views
Good databases for unanchored LIKE condition
Basically I need a database that is good with queries like LIKE %abc%.
I already tried PostgreSQL with GIN indexes and it is very good, but maybe there is something even better? I also tried MongoDB ...
0
votes
1answer
58 views
Match similar special character in filters
I have to perform a search on a table with Turkish city names.
The users would enter the first 4 characters of a city and I need to fetch the results from SQL.
For example, user wants to find the ...
1
vote
3answers
932 views
Using fulltext search to find a sequence of digits
We have a column of ten digit numbers (with leading zeros). We are trying to find rows that have a specific sequence of digits.
For example, all rows containing "5088" in any place in the column.
...
1
vote
1answer
681 views
Compare strings from two tables SQL Server 2014
I'm using these two tables in a SQL Server 2014 database:
CREATE TABLE #FORMULAS
(
[ID] [int] IDENTITY(1,1) NOT NULL,
[DataSourceAddress] [nvarchar](255) NULL,
[Description] [nvarchar](...
4
votes
2answers
76 views
Performing search on a column by query
Up until today I've used LIKE %term% to query for rows on particular column term. Then I've read about FULL TEXT index. And I think I misunderstood how full text index works.
I have an API that ...
8
votes
5answers
43k views
How to find all positions of a string within another string
How can I find all the positions with patindex in a table or variable?
declare @name nvarchar(max)
set @name ='ali reza dar yek shabe barani ba yek '
+ 'dokhtare khoshkel be disco raft va ali ...
4
votes
1answer
2k views
Alternatives to LIKE and FTS for mid name search
I have a question about what are the alternatives for LIKE '%%' and Full-Text Search when it comes to searching organisation names, firstnames, surnames, etc.
The LIKE '%%' causes table scan, however ...
