WebNov 12, 2015 · SELECT ISNULL (NULL,'NULL') FOR XML PATH ('foo') This means if you want the XML element, etc. to have a value of NULL rather than being blank, then your SELECT statement would need to use the ISNULL function and say if the value is NULL then replace with literal NULL value to be as the actual XML value. ELEMENTS XSINIL WebMay 12, 2024 · 1. Replace NULL value with blank value. While trying to convert NULL to blank value by using a CASE statement. Note: sampCol is numeric IDs. ,CASE WHEN …
SQL NULL Check in Where clause - IS NULL and IS NOT NULL
WebDec 20, 2014 · You then create a dummy temp table with the value you are looking for, and left outer join on the actual data. select case when c.Name is null then 'Default Value' else c.Data end [Data] from (select 'NameOfConfiguration' [Name]) Target left outer join Configuration c on c. [Name] = Target. [Name] Share Improve this answer Follow WebSep 27, 2007 · NULLIF () returns NULL if the two parameters provided are equal; otherwise, the value of the first parameter is returned. Seems a little odd and not very useful, but it is a great way of ensuring that empty strings are always returned as NULLS. For example, the expression: nullif (override,'') gibbs smith publishing company
How to check if field is null or empty in MySQL?
WebIn Object Explorer, drill down to the table you want, expand it, then drag the whole "Columns" folder into a blank query editor. This will add a comma-separated list of columns to the … WebJun 26, 2024 · To check whether a field is null or empty in MySQL, use the IF () function in MySQL. The syntax is as follows −. SELECT IF(yourColumnName IS NULL or … WebFeb 16, 2024 · SQL concatenation is the process of combining two or more character strings, columns, or expressions into a single string. For example, the concatenation of … frp board fire rating