I am using Join operator to check two values in table but it does not work
select = [[NSString alloc] initWithFormat:#"select * FROM ContentMaster LEFT JOIN Category ON ContentMaster.CategoryID= Category.CategoryID where ContentMaster.ContentTitle='%#' || ContentMaster.ContentTagText='%#' ",appDelegate.tagInput,appDelegate.tagInput];
If i do not use operator and use one in where clause then it shows result.
like
select = [[NSString alloc] initWithFormat:#"select * FROM ContentMaster LEFT JOIN Category ON ContentMaster.CategoryID= Category.CategoryID where ContentMaster.ContentTitle='%#'",appDelegate.tagInput];
select = [[NSString alloc] initWithFormat:#"select * FROM ContentMaster LEFT JOIN Category ON ContentMaster.CategoryID= Category.CategoryID where ContentMaster.ContentTagText='%#'",appDelegate.tagInput];
Any idea how to fix this issue so that or operator works
In SQL (and SQLite in particular), operator || typically means string concatenation.
If you want logical or, use operator OR.
In sqlite just use or for logical or operation:
SELECT *
FROM ContentMaster
LEFT JOIN Category ON ContentMaster.CategoryID = Category.CategoryID
WHERE ContentMaster.ContentTitle = '%#' OR ContentMaster.ContentTagText= '%#'
Related
SELECT '{}'::json = '{}'::json
Will fail with error.
Is JSON the only data type that postgres will fail to compare on equality out of the box? If not then how to work out which data types cannot be compared (against the same data type) on equality?
I am only interested in getting a list of data types that will fail an equality comparison.
To find out which types support the = operator, you can use the following query:
select lt.typname as left_type,
rt.typname as right_type
from pg_operator opr
join pg_type lt on lt.oid = opr.oprleft
join pg_type rt on rt.oid = opr.oprright
where oprname = '=';
By using a NOT EXISTS condition, you can find out all types that do not support =
select t.typname
from pg_type t
where not exists (select *
from pg_operator opr
where opr.oprname = '='
and opr.oprleft = t.oid
and opr.oprright = t.oid);
I have IPhone application in which I am inserting data. It works fine when I fetch all the data without any condition then it works fine if given any condition like
following query then it does not show anything.
NSString *select =
[NSString stringWithFormat:
#"SELECT * from ContentMaster As ml
LEFT JOIN ContentTagging As cat
ON cat.ContentID = ml.ContentID
where cat.ContenTagText= \'%#\'" ,appDelegate.tagInput];
const char *sql = [select UTF8String];
then it does not show any thing using this if i use the select * form ContentMaster then it shows all records added.
Try this.
SELECT * from ContentMaster
LEFT JOIN ContentTagging
ON ContentMaster.ContentID = ContentTagging.ContentID
WHERE ContentTagging.ContenTagText= \'%#\'"
I am doing an iPad project, there are 3 tables in UI. if i select row in each table. Sqlite query will take the value from table and run the query. please find my Query below.
NSString * str3=tableFou.string4;
NSString * str4=tableFiv.string5;
NSString * str2=tablethr.string3;
sqlite3 *database;
favorite=[[NSMutableArray alloc]init];
if(sqlite3_open([databasePath UTF8String], &database)== SQLITE_OK){
NSString *sql=[NSString stringWithFormat:#"Create view prizeview as SELECT country.name,item_country.id,text.text,substr(text,1,2) FROM country,item_country,prize,item_prize,gender,item_gender,text WHERE country.name = '%#' AND text.item = item_country.item AND country.id = item_country.id AND prize.name = '%#' and text.item=item_prize.item and prize.id = item_prize.id and gender.name = '%#' and text.item=item_gender.item and gender.id = item_gender.id ",str3,str4,str2];
const char *sqlStatement = [sql UTF8String];;
problem is that, the query is running if i select all the tables only.. but i want results if i select even one table. how can i do that?
Try with if condition use with and condition and pass all your str in if condition only.
use your if condition like this.
if(([propertyTypeLabel.text length]==0) || ([cityLabel.text length]==0 ) ||( [locationLabel.text length]==0 )|| ([priceLabel.text length] ==0)||([postedLabel.text length]==0))
In this like any of text is zero condition true you also use if ant of the table cell is tap your query run.
You can't search for empty fields unless the field is actually empty. F.ex. if you search
select * from mytable where username = "";
You won't find it, but if you are ok with the field being empty or whatever result, you must use like instead of =
select * from mytable where username like "%";
or better yet, you can create your query like this, lets say you have three fields to search for, username, firstname and lastname. The code below needs a few more if's and buts, but you should be able to make this work and only add the parameters to where if they fulfill the requirements.
NSMutableString *query = [[NSMutableString alloc] init];
[query appendString:#"select * from table where "];
if (username.text.lenghth >1) [query appendString:[NSString stringWithFormat:#"username = '%#'"]];
if (firstname.text.length >1) [query appendString:[NSString stringWithFormat:#"&& firstname = '%#'"]];
if (lastname.text.length >1) [query appendString:[NSString stringWithFormat:#"&& lastname = '%#'"]];
Hope this helps
I am having a problem combining two WHERE statements in the following SQL statement :
query = [[NSString alloc] initWithFormat: #"SELECT Name, Description,Postcode,AddressLine1, ImageURL, Free, Area, OpeningTimes, NearestTube, Cost,UniqueID, URL, Number, FirstLetter FROM MainDetails WHERE Free ='Y' AND FirstLetter = '%#%'",tmpLike];
I want to say where Free is equal to Y and FirstLetter is equal to tmplike, however the above is not working.
Can anyone help ?
Your using a wildcard so you want LIKE not equality (=);
... WHERE Free ='Y' AND FirstLetter LIKE '%#%'"
TRY THIS REMOVE % FROM LAST
query = [[NSString alloc] initWithFormat: #"SELECT Name, Description,Postcode,AddressLine1, ImageURL, Free, Area, OpeningTimes, NearestTube, Cost,UniqueID, URL, Number, FirstLetter FROM MainDetails WHERE Free ='Y' AND FirstLetter = '%#'",tmpLike];
try with escape char '/'
query = [[NSString alloc] initWithFormat: #"SELECT Name, Description,Postcode,AddressLine1, ImageURL, Free, Area, OpeningTimes, NearestTube, Cost,UniqueID, URL, Number, FirstLetter FROM MainDetails WHERE Free ='Y' AND FirstLetter = '%#\%'",tmpLike];
use this one it work fine
query = [[NSString alloc] initWithFormat: #"SELECT Name, Description,Postcode,AddressLine1, ImageURL, Free, Area, OpeningTimes, NearestTube, Cost,UniqueID, URL, Number, FirstLetter FROM MainDetails WHERE Free ='Y' AND FirstLetter LIKE '%# %%'",tmpLike];
Maybe simply brackets ?
... WHERE (Free ='Y') AND (FirstLetter LIKE '%#')",tmpLike];
I have a query in access which i need to convert to a stored proc in sql server 2005.
the query in access is as follows:
UPDATE
tblitem,
tblFileSignature
SET
tblitem.strFileProcesstype = [tblFileSignature].[STRFILEPROCESSTYPE], tblitem.strFileSignatureType = [tblFileSignature].[strfilesignaturetype]
WHERE
(((tblitem.strFileSignatureType) Is Null) AND
((tblitem.strFileExclude)="n") AND
((InStr([tblitem].[strfilesignature],[tblFileSignature].[strsignature]))=1) AND ((tblitem.uidItemType)=1 Or (tblitem.uidItemType)=5) AND
((tblitem.uidCollection)=[forms]![frmSetup]![txtInputCol]) AND ((tblitem.strFileSignature) Not Like "d0c*") AND
((tblFileSignature.strFileProcessType) Not Like "ZIP"));
in tsql.. would this be the same?
update tblItem
set
i.strFileProcesstype = f.strFileProcesstype,
i.strFileSignatureType = f.strfilesignaturetype
from tblItem as I UNION tblFileSignature as F
WHERE (((i.strFileSignatureType) Is Null) AND
((i.strFileExclude)="n") AND
((i.[strfilesignature] like F.strsignature)) AND
((i.uidItemType)=1 Or
(i.uidItemType)=5) AND
((i.uidCollection)=#inputcolumn AND
((i.strFileSignature) Not Like 'd0c%') AND
((F.strFileProcessType) Not Like 'ZIP'));
thanks in advance
UPDATE:
so i'm going with the following. if i uncomment the declare and select clause and just execute from the declare down, it runs, if i comment the declare and select parts, it says error near ';'.
UPDATE I
SET
I.strFileProcesstype = F.STRFILEPROCESSTYPE,
I.strFileSignatureType = F.strfilesignaturetype
--declare #uidcollectionID int
--select I.strFileSignatureType
from
tblItem I
inner join tblFileSignature F
on
I.strfilesignature = left(F.strsignature,len(I.strfilesignature))
WHERE I.strFileSignatureType Is Null
AND I.strFileExclude='n'
AND I.uidItemType in (1,5)
AND I.uidCollection = #uidCollectionID
AND left(I.strFileSignature,3) <> 'd0c'
AND F.strFileProcessType <> 'ZIP';
any ideas?
You should change the
Double Quotes to Single Quotes
* to %
Replace the InStr with LIKE
Other than that, it looks fine to me.
No, you'd use a JOIN, not a UNION.
You can either make it a CROSS JOIN, and continue to apply the join conditions in the WHERE clause, or you can make it an inner join:
from tblItem as I INNER JOIN tblFileSignature as F
ON ((InStr(i.[strfilesignature],F.[strsignature]))=1)
And remove that condition from the WHERE clause (Lieven's answer also applies).
This should be close to what you need. May need to work on the join condition, but I think my conversion from INSTR will do it.
UPDATE i
SET strFileProcesstype = fs.STRFILEPROCESSTYPE,
strFileSignatureType = fs.strfilesignaturetype
FROM tblitem i
INNER JOIN tblFileSignature fs
ON i.strfilesignature = LEFT(fs.strsignature, LEN(i.strfilesignature))
WHERE i.strFileSignatureType IS Null
AND i.strFileExclude='n'
AND i.uidItemType IN (1,5)
AND i.uidCollection = #inputcolumn
AND LEFT(i.strFileSignature,3) <> 'd0c'
AND fs.strFileProcessType <> 'ZIP';