How do I query time data type with between 2 times varying over midnight. Here is what I have tried. declare @timeValue time SET @timeValue = ’23:30:00′ SELECT @timeValue,DATEADD(minute, -30, @timeValue),DATEADD(minute, +30, @timeValue) WHERE @timeValue BETWEEN DATEADD(minute, -30, @timeValue) AND DATEADD(minute, +30, @timeValue) But if we take the above example for finding if the time is valid in between 30
Comma-delimit multiple columns when some values may be null
I need to comma-delimit the values contained in multiple columns, when each of the columns could contain a NULL value: Results: Is there an approach that is less cumbersome than what I’ve done for abc, preferably without having to use PL/SQL? Answer The function that you really want is concat_ws(), but Oracle doesn’t have one. But here is an alternative
Can I store a Word document in a PostgreSQL database? [closed]
We maintain our data in a PostgreSQL database, and keep the relevant documentation in the form of Word (TM) files. Now a peculiar sentence in the description of the project states that the …
group some row in resilt table
I need get a group some row select from result table. I’ve written select but have error message ORA-00913. How to write a correct select ?I have a result table: and insert: and I need to get result table: I’m trying: but ora-00913 too many values How to write correct “select” ? Sorry, There is some new conditions. The table
How to retrieve multiple column from SQL database?
I’m trying to get two column details like this way: public string GetData() { using (SqlConnection con = new SqlConnection(this.Connection)) { con.Open(); …
postgres column “X” does not exist
I have this postgrse code: and I get this error: how can it be? it’s a value not a column.postgr Answer Use single quotes for string constants Also you can escape single quotes in data by doubling them SQL FIDDLE DEMO
Find closest or higher values in SQL
I have a table: table1 I have to generate the following table: table2 So, table2 should have all values from 1 to 100. There are 3 cases: If it’s an exact match, for ex. rank 25, value would be 120 Find closest, for ex. for rank 9 in table2, we do NOT have exact match, but 1 is closest to
select in column that has array(value1,value2,…) in sql table [closed]
I have a sql table called “users” inside this table a column named “Cities” has array in it (1,2, 3,…) row1 :”1,2,15,69,98″ row2 :”7,9,15,5,69″ row3 :”7,3,1,5,6″ how can I select rows which …
Left Join On And clause not supported
I’ve looked into various posts (this one, that one and this other one) and thought I got the answer. After a LEFT JOIN I may add an ON [condition] AND [other condition] (I’ve also tried WHERE). But …
Housing Society management system database structure
I am designing billing structure for housing society yesterday I googled and gone through banking billing structure and designed my database structure but I am not sure whether this would be correct. So I am putting my billing database structure. Please tell me if I am wrong any where or any changes has to be done in my database structure.