I would like to know how I can return several COUNTs for the following: I have 27 work sites, each site has an employee with a contract, I have wrote a script to return one actual column of data (…
Tag: count
Calculate Count of true bits in binary type with t-sql
I need to find how many true bit exists in my binary value. example: Answer Result:
Count Number of Columns In Hive
I am looking for a way to count the number of columns in a table in Hive. I know the following code works in Microsoft SQL Server. Is there a Hive equivalent? SELECT COUNT(*), FROM …
Counting number of joined rows in left join
I’m trying to write an aggregate query in SQL which returns the count of all records joined to a given record in a table; If no records were joined to the given record, then the result for that record should be 0: Data My database looks like this (I’m not able to change the structure, unfortunatel…
Fastest way to determine if record exists
As the title suggests… I’m trying to figure out the fastest way with the least overhead to determine if a record exists in a table or not. Sample query: Say the ? is swapped with ‘TB100’… both the first and second queries will return the exact same result (say… 1 for this c…
Using COUNT in GROUP_CONCAT
This is my table: id | fk_company ——————- 1 | 2 2 | 2 3 | 2 4 | 4 5 | 4 6 | 11 7 | 11 8 | 11 …
ILIKE and NOT ILIKE in aws redshift different from total
I ran three following queries in amazon redshift: The count was 1554. The count was 62. The count was 85. The last two (62 + 85) should equal 1554. What am I missing? Answer Double-quotes are for identifiers: “myColumn” Single quotes are for values: ‘value’. Your examples contradict th…
Number of similar columns occurrences
I am new to SQL SERVER and need your advise on something. I have a big table with stores information. Here is bench_id column: **bench_id** 31 51 51 61 61 61 71 71 I have created another small table …
H2 Get row count for all tables
I would like to know the total number of rows for each table. And that for all tables at once. Is this possible with H2? I’m thinking of a table: |table name | row size | At the moment I’m using the current version 1.3.170 (2012-11-30). Answer You would need to use a user-defined function, for exa…
MySQL: Count the distinct rows per day
I have an interesting query I need to do. I have a table with an INT column containing ip address numbers (using INET_ATON), and a timestamp column. I want to be able to count the number of unique ip address columns there are per day. That is, how many distinct ip rows there are in each day. So, for example,