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PHP method chaining?
...thing that should be done after collecting all elements. Like executing an SQL query here - but beware, you could do multiple chained calls on one object! Firt and last in each.
– Andris
Apr 4 '18 at 22:45
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MySQL COUNT DISTINCT
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I love SQL because you get questions like "How do I count distinct user IDs" and the answer is just "Count(Distinct user_id)"
– Tim
Nov 13 '18 at 15:29
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Create or write/append in text file
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Oh, yes there will be, in this case use a SQL database, it has a built-in engine to avoid race-conditions. But that's a whole new question.
– Valentin Mercier
Jul 26 '14 at 15:45
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How can I turn a List of Lists into a List in Java 8?
...))
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.collect(Collectors.toList())
This is would be similar in SQL to having SELECT statements within SELECT statements.
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Must JDBC Resultsets and Statements be closed separately although the Connection is closed afterward
...lph Stevens - You cannot count on that. I have had a situation where the MSSQL JDBC driver leaked memory because the ResultSet's were not closed, even after being garbage collected.
– Paul
Sep 8 '11 at 5:52
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PostgreSQL ERROR: canceling statement due to conflict with recovery
I'm getting the following error when running a query on a PostgreSQL db in standby mode. The query that causes the error works fine for 1 month but when you query for more than 1 month an error results.
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How can I Remove .DS_Store files from a Git repository?
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*.rar
*.tar
*.zip
# Logs and databases #
######################
*.log
*.sql
*.sqlite
# OS generated files #
######################
.DS_Store
.DS_Store?
._*
.Spotlight-V100
.Trashes
ehthumbs.db
Thumbs.db
Now, add this file to your global git config:
git config --global core.excludesfile ~/.git...
Best timestamp format for CSV/Excel?
...y user662894.
I want to add: Don't try to get the microseconds from, say, SQL Server's datetime2 datatype: Excel can't handle more than 3 fractional seconds (i.e. milliseconds).
So "yyyy-mm-dd hh:mm:ss.000000" won't work, and when Excel is fed this kind of string (from the CSV file), it will perfo...
How to get milliseconds from LocalDateTime in Java 8
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You can use java.sql.Timestamp also to get milliseconds.
LocalDateTime now = LocalDateTime.now();
long milliSeconds = Timestamp.valueOf(now).getTime();
System.out.println("MilliSeconds: "+milliSeconds);
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Suppress warning messages using mysql from within Terminal, but password written in bash script
When I tried running the following command on MySQL from within Terminal:
25 Answers
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