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15 mar 2013 · You need to check for null explicitly: SELECT CASE WHEN last_name is NULL THEN first_name ELSE first_name + ' ' + last_name
11 lip 2012 · I'm not familiar with MSSQL but if it has something like IF-function in MySQL, you can write such code: IF(ID IS NULL, 'YES', 'NO') AS ID_Value –
2 cze 2023 · You can probably write two CASE statements to display it: SELECT CASE WHEN MOD(yourcolumn, 2)=0 THEN yourcolumn ELSE null END AS evenvalue, CASE WHEN MOD(yourcolumn, 2)=1 THEN yourcolumn ELSE null END AS oddvalue FROM yourtable;
The SQL CASE Expression. The CASE expression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in the ELSE clause.
case when id is null then "null" when id = 1 then "test" end. from. t1. On my real query I have a date_diff function: DATE_DIFF(second_date,first_date, DAY) as time_lag, and when trying to apply the following case statement: case when time_lag is null then "null" when time_lag = "1" then "test" end. I have this error:
4 lis 2022 · With SQL, you can do this using the CASE statement. You use the CASE keyword together with the WHEN clause to execute a block of conditional statement code. You use a THEN statement to return the result of the expression. If none of the conditions are met, then you use a final ELSE clause to return a fallback result.
27 sty 2017 · You can use nullif(col,'') to return null when the value of the first parameter is equal to the second parameter. ,CASE. WHEN nullif([FULL_TELEPHONE_NUMBER],'') IS NOT NULL AND nullif([EMAIL],'') IS NOT NULL. THEN 'Phone Number AND Email Address Available'.
