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Use the LEN function to check for null or empty values. You can just use LEN (@SomeVarcharParm) > 0. This will return false if the value is NULL, '', or ' '. This is because LEN (NULL) returns NULL and NULL > 0 returns false. Also, LEN (' ') returns 0.
15 wrz 2008 · See working demo: if then without case in SQL Server. For start, you need to work out the value of true and false for selected conditions. Here comes two NULLIF: for true: ISNULL(NULLIF(p.[Instock], 'Y'), 1) for false: ISNULL(NULLIF(p.[Instock], 'N'), 0) combined together gives 1 or 0. Next use bitwise operators.
23 lis 2010 · IF [NOT] EXISTS ( SELECT 1 FROM MyTable WHERE ... <do smth>. For example if you want to check if user exists before inserting it into the database the query can look like this: IF NOT EXISTS ( SELECT 1 FROM Users WHERE FirstName = 'John' AND LastName = 'Smith' ) BEGIN. INSERT INTO Users (FirstName, LastName) VALUES ('John', 'Smith') END.
8 maj 2013 · I receive data in a certain format. Dates are numeric(8,0). For example 20120101 = YYYYMMDD There exists rows with values like (0,1,2,3,6) in that date field, thus not a date.
16 gru 2019 · Is there an easy way to figure out if a varchar is a number? Examples: abc123 --> no number 123 --> yes, its a number
29 sie 2008 · 15. To get only empty values (and not null values): SELECT * FROM myTable WHERE myColumn = ''. To get both null and empty values: SELECT * FROM myTable WHERE myColumn IS NULL OR myColumn = ''. To get only null values: SELECT * FROM myTable WHERE myColumn IS NULL. To get values other than null and empty:
select CITY from STATION as st where st.id % 2 = 0. Will fetch the even set of records. In order to fetch the odd records with Id as odd number. select CITY from STATION as st where st.id % 2 <> 0. % function reduces the value to either 0 or 1. edited Aug 1, 2017 at 15:43. answered Aug 1, 2017 at 15:03. Neha Chopra.
1 kwi 2015 · There are some way to do this, seem you want find a word and not a part of a word, so you can do in easy way with like operator. You can have 3 cases to found a word. 'space'WORD. WORD'space'. 'space'WORD'space'. SELECT * FROM TABLE WHERE Field like ' an' OR Field like 'an ' OR Field like ' an '. Hope it helps.
11 mar 2022 · A boolean in SQL is a bit field. This means either 1 or 0. The correct syntax is: select * from users where active = 1 /* All Active Users */. or. select * from users where active = 0 /* All Inactive Users */. answered May 13, 2009 at 19:01.
9. Here is my preferred way to check for "if null or empty": SELECT *. FROM UserProfile. WHERE PropertydefinitionID in (40, 53) AND NULLIF(PropertyValue, '') is null. Since it modifies the search argument (SARG) it might have performance issues because it might not use an existing index on the PropertyValue column.
