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Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause?
...pdated) values(null, null);
Query OK, 1 row affected (0.06 sec)
mysql> select * from t5;
+----+---------------------+---------------------+
| id | stamp_created | stamp_updated |
+----+---------------------+---------------------+
| 2 | 2009-04-30 09:44:35 | 2009-04-30 09:44:35 |
+...
I want to copy table contained from one database and insert onto another database table
...as below.
CREATE TABLE db2.table LIKE db1.table;
INSERT INTO db2.table SELECT * FROM db1.table;
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Does the join order matter in SQL?
...t matter. The queries will return same results, as long as you change your selects from SELECT * to SELECT a.*, b.*, c.*.
For (LEFT, RIGHT or FULL) OUTER joins, yes, the order matters - and (updated) things are much more complicated.
First, outer joins are not commutative, so a LEFT JOIN b is no...
Android - Emulator in landscape mode, screen does not rotate
...
In my case the Skin option in AVD settings was the problem. When I selected "No skin", it worked.
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Is there a way to view past mysql queries with phpmyadmin?
...
To view the past queries simply run this query in phpMyAdmin.
SELECT * FROM `general_log`
if it is not enabled, run the following two queries before running it.
SET GLOBAL log_output = 'TABLE';
SET GLOBAL general_log = 'ON';
...
How to export DataTable to Excel
...tring[] columnNames = dataTable.Columns
.Cast<DataColumn>()
.Select(column => column.ColumnName)
.ToArray();
var header = string.Join(",", columnNames.Select(name => $"\"{name}\""));
lines.Add(header);
var valueLines = dataTable.AsEnumerable()
.Select(row => string.J...
MongoDB Show all contents from all collections
...
Step 1: See all your databases:
show dbs
Step 2: Select the database
use your_database_name
Step 3: Show the collections
show collections
This will list all the collections in your selected database.
Step 4: See all the data
db.collection_name.find()
or
db.colle...
Error message “Forbidden You don't have permission to access / on this server” [closed]
...; OPT_INDEXES) {
return index_directory(r, d);
} else {
const char *index_names = apr_table_get(r->notes, "dir-index-names");
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01276)
"Cannot serve directory %s: No matching DirectoryIndex (%s) found, an...
Visual Studio Copy Project
... to the project you want to copy in solution explorer and right-click.
Now select 'Open Folder in File Explorer' (Assuming you have the solution mapped to a local path on your disk).
Select the Projects you want to replicate as whole folders(along with all dependencies,bin .vspscc file, .csproj file...
What is the lifetime of a static variable in a C++ function?
... emitter a("in if");
static emitter b("in foo");
}
int main(int argc, char*[])
{
foo(argc != 2);
if (argc == 3)
foo(false);
}
Output:
C:>sample.exe
Created in foo
Destroyed in foo
C:>sample.exe 1
Created in if
Created in foo
Destroyed in foo
Destroyed in if
C:>sample...