Postgresql select NULL as 0
The NULLIF function returns a null value if argument_1 equals to argument_2 ... SELECT NULLIF (1, 1); -- return NULL SELECT NULLIF (1, 0); -- return 1 ... ,Now, should the NULL row in the table be counted as 0? Then coalesce has to be used inside the avg call. $ select coalesce(avg(coalesce(bar, 0)), 0) from foo; ...
| 相關軟體 PostgreSQL (64-bit) 資訊 | |
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 Postgresql select NULL as 0 相關參考資料
PostgreSQL COALESCE - PostgreSQL Tutorial
See the following query that uses the CASE expression to achieve the same result above. SELECT product, ( price - CASE WHEN discount IS NULL THEN 0 ... https://www.postgresqltutorial PostgreSQL NULLIF function - PostgreSQL Tutorial
The NULLIF function returns a null value if argument_1 equals to argument_2 ... SELECT NULLIF (1, 1); -- return NULL SELECT NULLIF (1, 0); -- return 1 ... https://www.postgresqltutorial postgresql return 0 if returned value is null - Stack Overflow
Now, should the NULL row in the table be counted as 0? Then coalesce has to be used inside the avg call. $ select coalesce(avg(coalesce(bar, 0)), 0) from foo; ... https://stackoverflow.com Postgresql To Return 0 when Null - Database Administrators ...
I am attempting to run a query using MAX() but my issue is that if the field contains a NULL value the data returns nothing. Updating the table is not an option, so ... https://dba.stackexchange.com Postgresql To Return 0 when Null - DBA Stack Exchange
I am attempting to run a query using MAX() but my issue is that if the field contains a NULL value the data returns nothing. Updating the table is not an option, so ... https://dba.stackexchange.com Postgresql turn null into zero - Stack Overflow
select coalesce(max(column), 0) from mytable;. https://stackoverflow.com Re: convert NULL into a value - PostgreSQL
> ZERO). > > Can I use this function on the PostgreSQL?? > -- The equivalent function is PostgreSQL is. SELECT COALESCE(field,0). https://www.postgresql.org sql SUM: change null with 0 - Stack Overflow
sql SUM: change null with 0 · sql postgresql. I have a query like this: SELECT bgdepartemen.c_kodedept ... https://stackoverflow.com |