Need help displaying the text between character '$' and string 'Request'
If we had this string
blah blah blah $60 blahblah blah Request
I would like to only print out
$60 blahblah blah
I've tried
select '$' || REGEXP_SUBSTR(notes,'([^\$]).*?(?=Request)')
this returns nothing. Sorry regular expressions are not my strong point
Oracle does not support lookahead.
Just match the string you want and wrap the parts you want to extract in a capture group and return that:
SQL Fiddle
Oracle 11g R2 Schema Setup:
CREATE TABLE table_name ( notes ) AS
SELECT 'blah blah blah $60 blahblah blah Request' FROM DUAL;
Query 1:
SELECT REGEXP_SUBSTR(
notes, -- input
'(\$.*?)Request', -- pattern
1, -- start at 1st character
1, -- find 1st occurrence
NULL, -- flags
1 -- capture group to return
) AS request
FROM table_name
Results:
| REQUEST |
|--------------------|
| $60 blahblah blah |
Related
I want to fetch the doctype. How do I do this? I want to add a separate column which will give doctype such as sales order, purchase order etc. The first line gives me error what query should be fired. Please help I am new to ERP Next.
SELECT
AD.ref_doctype AS “Doctype:Link/User:120”,
AD.name AS “Doc#:Link/Doctype:120”,
AD.owner AS “Created By:Link/User:120”,
AD.modified AS “Modified On:Date:120”
FROM tabAddress AS AD
WHERE
DATEDIFF(now(),AD.modified) BETWEEN 1 AND 30
UNION ALL
SELECT
TR.name AS “Doc#:Link/Doctype:120”,
TR.owner AS “Created By:Link/User:120”,
TR.modified AS “Modified On:Date:120”
FROM tabTax Rule AS TR
WHERE
DATEDIFF(now(),TR.modified) BETWEEN 1 AND 30
UNION ALL
SELECT
IT.name AS “Doc#:Link/Doctype:120”,
IT.owner AS “Created By:Link/User:120”,
IT.modified AS “Modified On:Date:120”
FROM tabItem AS IT
WHERE
DATEDIFF(now(),IT.modified) BETWEEN 1 AND 30
It isn't completely clear to me what you mean by docType field.
Are you wanting a result like this?
Doctype:Link/User:120|Doc#:Link/Doctype:120|Created By:Link/User:120|Modified On:Date:120|
---------------------|---------------------|------------------------|--------------------|
Email Account |Jobs |Administrator | 2019-12-04 06:07:55|
Email Account |Notifications |Administrator | 2019-12-01 05:25:53|
Email Account |Replies |Administrator | 2019-12-01 05:25:53|
Email Account |Sales |Administrator | 2019-12-04 06:07:55|
Email Account |Support |Administrator | 2019-12-04 06:07:55|
Here's the select :
set #docType = "Email Account";
SELECT
#tabDocType AS `Doctype:Link/User:120`,
AD.name AS `Doc#:Link/Doctype:120`,
AD.owner AS `Created By:Link/User:120`,
AD.modified AS `Modified On:Date:120`
FROM `tabEmail Account` AS AD
Note the backticks on the field aliases! All these have different meanings in SQL:
"
'
`
The last one, backtick, is used to refer to database entities. You were trying to use “Doctype:Link/User:120” with double quotes, which declare plain text. Using backtick converts the alias into a db entity which can be referred to from elsewhere.
MariaDb doesn't allow the use of variables as table names directly, but you can do it using prepared statements, like this:
set #docType = "Email Account";
set #tabDocType = CONCAT('tab', #docType);
SET #sql_text = concat('
SELECT
"', #docType, '" AS `Doctype:Link/User:120`
, AD.name AS `Doc#:Link/Doctype:120`
, AD.owner AS `Created By:Link/User:120`
, AD.modified AS `Modified On:Date:120`
FROM `', #tabDocType, '` as AD;
');
PREPARE stmt FROM #sql_text;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
The table name is now also specified by a variable, created from concatenation of 'tab' with the docType declared before.
You get the same result as above but -- you avoid accidentally changing the table name in one place but not in the other when editing some time in the future.
to fetch doctype name you have to give the linked doctype name, For example,
select
IT.name as "IT No:Link/IT:120"
How do I check in postgres that a varchar contains 'aaa' or 'bbb'?
I tried myVarchar IN ('aaa', 'bbb') but, obviously, it's true when myvarchar is exactly equal to 'aaa' or 'bbb'.
for multiple similarity check the best fit in terms of speed and laconic syntax would be
SIMILAR TO '%(aaa|bbb|ccc)%'
you can use ANY & LIKE operators together.
SELECT * FROM "myTable" WHERE "myColumn" LIKE ANY( ARRAY[ '%aaa%', '%bbb%' ] );
Assuming this is your table:
CREATE TABLE t
(
myVarchar varchar
) ;
INSERT INTO t (myVarchar)
VALUES
('something aaa else'),
('also some bbb'),
('maybe ccc') ;
-- (some random data, this query is PostgreSQL specific)
INSERT INTO t (myVarchar)
SELECT
random()::varchar
FROM
generate_series(1, 10000) ;
SQL Standard approach:
You can do (in all SQL standard databases):
SELECT
*
FROM
t
WHERE
myVarchar LIKE '%aaa%' or myVarchar LIKE '%bbb%' ;
and you'll get:
| myvarchar |
| :----------------- |
| something aaa else |
| also some bbb |
PostgreSQL specific approaches
Specifically for PostgreSQL, you can use a (single) regex with multiple values to look for:
SELECT
*
FROM
t
WHERE
myVarchar ~ 'aaa|bbb' ;
| myvarchar |
| :----------------- |
| something aaa else |
| also some bbb |
dbfiddle here
If you need quick finds, you can use trigram indexes, like this:
CREATE EXTENSION pg_trgm; -- Only needed if extension not already installed
CREATE INDEX myVarchar_like_idx
ON t
USING GIST (myVarchar gist_trgm_ops);
... the query using LIKE will be much faster.
With this query
SELECT trim(title) FROM (
SELECT
unnest( xpath('//p[#class="secTitle1"]', xmlText )::varchar[] ) AS title
FROM t1
) as t2
and XML input text with lines and spaces,
<root>
...
<p class="x">
text text
text text
</p><p> ...</p>
...
</root>
The trim() have no effect (!). It is a PostgreSQL bug? How to apply fn:normalize-space() with the XPath? I need something like "WHERE title is not null"? (Oracle is simpler...) How to do this simple query with PostreSQL?
Workaround
I need a well-configured build-in function, not a workaround... But I need to work and to show results, so I am using regular expression...
SELECT id, TRIM(regexp_replace(tit, E'[\\n\\r\\t ]+', ' ', 'g')) AS tit
FROM (
SELECT
id, -- xpath returns array of 1, 2, or more strings
unnest( xpath('//p[#class="secTitle1"]', texto )::VARCHAR[] ) AS tit
FROM t
) AS tmp
So, a "only simple space trim" is not friendly, not util (!).
EDIT after #mu comment
I try
SELECT id, TRIM(tit, E'\\n\\r\\t') AS tit
and
SELECT id, TRIM(tit, '\n\r\t') AS tit
both NOT WORKs.
QUESTION REMAINS:
there are no TRIM-option or postgresql configuration to say to TRIM work as it is required?
can I use normalize-space() at xpath? How?
I am using PostgreSQL 9.1, need to upgrade?
It works in 9.2, and it works on 8.4 too.
postgres=# select trim(unnest(string_to_array(e'\t\tHello\n\t\tHello\n\t\tHello', e'\n')), e'\t');
btrim
-------
Hello
Hello
Hello
(3 rows)
your regexp replace any char \n or \r or \t, but trim working with string "\n\r\t". It has different meaning than you expect.
I have a table EmployeeMoves:
| EmployeeID | CityIDs
+------------------------------
| 24 | 23,21,22
| 25 | 25,12,14
| 29 | 1,2,5
| 31 | 7
| 55 | 11,34
| 60 | 7,9,21,23,30
I'm trying to figure out how to expand the comma-delimited values from the EmployeeMoves.CityIDs column to populate an EmployeeCities table, which should look like this:
| EmployeeID | CityID
+------------------------------
| 24 | 23
| 24 | 21
| 24 | 22
| 25 | 25
| 25 | 12
| 25 | 14
| ... and so on
I already have a function called SplitADelimitedList that splits a comma-delimited list of integers into a rowset. It takes the delimited list as a parameter. The SQL below will give me a table with split values under the column Value:
select value from dbo.SplitADelimitedList ('23,21,1,4');
| Value
+-----------
| 23
| 21
| 1
| 4
The question is: How do I populate EmployeeCities from EmployeeMoves with a single (even if complex) SQL statement using the comma-delimited list of CityIDs from each row in the EmployeeMoves table, but without any cursors or looping in T-SQL? I could have 100 records in the EmployeeMoves table for 100 different employees.
This is how I tried to solve this problem. It seems to work and is very quick in performance.
INSERT INTO EmployeeCities
SELECT
em.EmployeeID,
c.Value
FROM EmployeeMoves em
CROSS APPLY dbo.SplitADelimitedList(em.CityIDs) c;
UPDATE 1:
This update provides the definition of the user-defined function dbo.SplitADelimitedList. This function is used in above query to split a comma-delimited list to table of integer values.
CREATE FUNCTION dbo.fn_SplitADelimitedList1
(
#String NVARCHAR(MAX)
)
RETURNS #SplittedValues TABLE(
Value INT
)
AS
BEGIN
DECLARE #SplitLength INT
DECLARE #Delimiter VARCHAR(10)
SET #Delimiter = ',' --set this to the delimiter you are using
WHILE len(#String) > 0
BEGIN
SELECT #SplitLength = (CASE charindex(#Delimiter, #String)
WHEN 0 THEN
datalength(#String) / 2
ELSE
charindex(#Delimiter, #String) - 1
END)
INSERT INTO #SplittedValues
SELECT cast(substring(#String, 1, #SplitLength) AS INTEGER)
WHERE
ltrim(rtrim(isnull(substring(#String, 1, #SplitLength), ''))) <> '';
SELECT #String = (CASE ((datalength(#String) / 2) - #SplitLength)
WHEN 0 THEN
''
ELSE
right(#String, (datalength(#String) / 2) - #SplitLength - 1)
END)
END
RETURN
END
Preface
This is not the right way to do it. You shouldn't create comma-delimited lists in SQL Server. This violates first normal form, which should sound like an unbelievably vile expletive to you.
It is trivial for a client-side application to select rows of employees and related cities and display this as a comma-separated list. It shouldn't be done in the database. Please do everything you can to avoid this kind of construction in the future. If at all possible, you should refactor your database.
The Right Answer
To get the list of cities, properly expanded, from a table containing lists of cities, you can do this:
INSERT dbo.EmployeeCities
SELECT
M.EmployeeID,
C.CityID
FROM
EmployeeMoves M
CROSS APPLY dbo.SplitADelimitedList(M.CityIDs) C
;
The Wrong Answer
I wrote this answer due to a misunderstanding of what you wanted: I thought you were trying to query against properly-stored data to produce a list of comma-separated CityIDs. But I realize now you wanted the reverse: to query the list of cities using existing comma-separated values already stored in a column.
WITH EmployeeData AS (
SELECT
M.EmployeeID,
M.CityID
FROM
dbo.SplitADelimitedList ('23,21,1,4') C
INNER JOIN dbo.EmployeeMoves M
ON Convert(int, C.Value) = M.CityID
)
SELECT
E.EmployeeID,
CityIDs = Substring((
SELECT ',' + Convert(varchar(max), CityID)
FROM EmployeeData C
WHERE E.EmployeeID = C.EmployeeID
FOR XML PATH (''), TYPE
).value('.[1]', 'varchar(max)'), 2, 2147483647)
FROM
(SELECT DISTINCT EmployeeID FROM EmployeeData) E
;
Part of my difficulty in understanding is that your question is a bit disorganized. Next time, please clearly label your example data and show what you have, and what you're trying to work toward. Since you put the data for EmployeeCities last, it looked like it was what you were trying to achieve. It's not a good use of people's time when questions are not laid out well.
I have the following SQL:
SELECT ',' + LTRIM(RTRIM(CAST(vessel_is_id as CHAR(2)))) + ',' AS 'Id'
FROM Vessels
WHERE ',' + LTRIM(RTRIM(CAST(vessel_is_id as varCHAR(2)))) + ',' IN (',1,2,3,4,5,6,')
Basically, I want to filter the vessel_is_id against a variable list of integer values (which is passed in as a varchar into the stored proc). Now, the above SQL does not work. I do have rows in the table with a `vessel__is_id' of 1, but they are not returned.
Can someone suggest a better approach to this for me? Or, if the above is OK
EDIT:
Sample data
| vessel_is_id |
| ------------ |
| 1 |
| 2 |
| 5 |
| 3 |
| 1 |
| 1 |
So I want to returned all of the above where vessel_is_id is in a variable filter i.e. '1,3' - which should return 4 records.
Cheers.
Jas.
IF OBJECT_ID(N'dbo.fn_ArrayToTable',N'FN') IS NOT NULL
DROP FUNCTION [dbo].[fn_ArrayToTable]
GO
CREATE FUNCTION [dbo].fn_ArrayToTable (#array VARCHAR(MAX))
-- =============================================
-- Author: Dan Andrews
-- Create date: 04/11/11
-- Description: String to Tabled-Valued Function
--
-- =============================================
RETURNS #output TABLE (data VARCHAR(256))
AS
BEGIN
DECLARE #pointer INT
SET #pointer = CHARINDEX(',', #array)
WHILE #pointer != 0
BEGIN
INSERT INTO #output
SELECT RTRIM(LTRIM(LEFT(#array,#pointer-1)))
SELECT #array = RIGHT(#array, LEN(#array)-#pointer),
#pointer = CHARINDEX(',', #array)
END
RETURN
END
Which you may apply like:
SELECT * FROM dbo.fn_ArrayToTable('2,3,4,5,2,2')
and in your case:
SELECT LTRIM(RTRIM(CAST(vessel_is_id AS CHAR(2)))) AS 'Id'
FROM Vessels
WHERE LTRIM(RTRIM(CAST(vessel_is_id AS VARCHAR(2)))) IN (SELECT data FROM dbo.fn_ArrayToTable('1,2,3,4,5,6')
Since Sql server doesn't have an Array you may want to consider passing in a set of values as an XML type. You can then turn the XML type into a relation and join on it. Drawing on the time-tested pubs database for example. Of course you're client may or may not have an easy time generating the XML for the parameter value, but this approach is safe from sql-injection which most "comma seperated" value approaches are not.
declare #stateSelector xml
set #stateSelector = '<values>
<value>or</value>
<value>ut</value>
<value>tn</value>
</values>'
select * from authors
where state in ( select c.value('.', 'varchar(2)') from #stateSelector.nodes('//value') as t(c))