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- Calculate difference between 2 date times in Oracle SQL
I have a table as follows: Filename - varchar Creation Date - Date format dd mm yyyy hh24:mi:ss Oldest cdr date - Date format dd mm yyyy hh24:mi:ss How can I calcuate the difference in hours minut
- Excel - Make a graph that shows number of occurrences of each value in . . .
Viewed 104k times 15 I am trying to make a graph (like a bar graph, number of occurrences on the y and value on the x) that will show each value in a column and the number of times it occurs
- Whats the best way to join on the same table twice?
N-Suffix the table aliases that you will use multiple times to make it obvious *One way DBAs avoid the headaches of updating natural keys is to not specify primary keys and foreign key constraints which further compounds the issues with poor db design I've actually seen this more often than not
- word里面如何将公式的格式改为新罗马字体？ - 知乎
知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视
- Copying PostgreSQL database to another server - Stack Overflow
Run this command with database name, you want to backup, to take dump of DB pg_dump -U {user-name} {source_db} -f {dumpfilename sql} eg pg_dump -U postgres mydbname -f mydbnamedump sql
- How to keep one variable constant with other one changing with row in . . .
Lets say I have one cell A1, which I want to keep constant in a calculation For example, I want to calculate a value like this: =(B1+4) (A1) How do I make it so that if I drag that cell to make a
- How to count occurrences of a column value efficiently in SQL?
and if data in "age" column has similar records (i e many people are 25 years old, many others are 32 and so on), it causes confusion in aligning right count to each student in order to avoid it, I joined the tables on student ID as well
- How to match any character in regular expression?
Specific Solution to the example problem:-Try [A-Z]*123$ will match 123, AAA123, ASDFRRF123 In case you need at least a character before 123 use [A-Z]+123$
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