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Change auto increment starting number?
In MySQL, I have a table, and I want to set the auto_increment value to 5 instead of 1 . Is this possible and what query statement does this?
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Truncating all tables in a Postgres database
...pgSQL can do this. Here's the script:
CREATE OR REPLACE FUNCTION truncate_tables(username IN VARCHAR) RETURNS void AS $$
DECLARE
statements CURSOR FOR
SELECT tablename FROM pg_tables
WHERE tableowner = username AND schemaname = 'public';
BEGIN
FOR stmt IN statements LOOP
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html - table row like a link
I can't set my table row as link to something. I can use only css and html. I tried different things from div in row to something another, but still can't make it works.
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Hide/Show Column in an HTML Table
I have an HTML table with several columns and I need to implement a column chooser using jquery. When a user clicks on a checkbox I want to hide/show the corresponding column in the table. I would like to do this without attaching a class to every td in the table, is there a way to select an entir...
Foreign Key to multiple tables
I've got 3 relevant tables in my database.
5 Answers
5
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Laravel Migration Change to Make a Column Nullable
...nging a column; here's an example from the offical documentation:
Schema::table('users', function($table)
{
$table->string('name', 50)->nullable()->change();
});
Source: http://laravel.com/docs/5.0/schema#changing-columns
Laravel 4 does not support modifying columns, so you'll need ...
Add Foreign Key to existing table
I want to add a Foreign Key to a table called "katalog".
13 Answers
13
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How to write DataFrame to postgres table?
...te_engine('postgresql://scott:tiger@localhost:5432/mydatabase')
df.to_sql('table_name', engine)
You are correct that in pandas up to version 0.13.1 postgresql was not supported. If you need to use an older version of pandas, here is a patched version of pandas.io.sql: https://gist.github.com/jor...
Search of table names
...
I'm using this and works fine
SELECT * FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME LIKE '%%'
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Multiple select statements in Single query
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SELECT (
SELECT COUNT(*)
FROM user_table
) AS tot_user,
(
SELECT COUNT(*)
FROM cat_table
) AS tot_cat,
(
SELECT COUNT(*)
FROM course_table
) AS tot_course
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