racl101 + column   52

php - belongsToMany relationship in Laravel across multiple databases - Stack Overflow
Someone figured out how to do a relationship column / property between two models (with pivot table), i.e. belongsToMany where the second model might have a dynamic database connection (i.e. it's not the same each time a query is done). So they figured out howto obtain the database for the current database connection (i.e. the current PHP script execution).
stackoverflow  laravel  laravel5  howto  belongstomany  model  relationship  property  column  between  different  database  connections  example  guide  reference  pivot  table 
may 2018 by racl101
orm - Laravel Eloquent Filter By Column of Relationship - Stack Overflow
Doesn't work all that well if the relationship property / field is defined on a table in a different database connection than the main model object that you're doing the operation on.
stackoverflow  laravel  laravel5  howto  filter  by  relationship  column  property  model  where  query  example  guide  reference  totry  tounderstand 
may 2018 by racl101
MySQL 5.7.12 import cannot create a JSON value from a string with CHARACTER SET 'binary' - Stack Overflow
For single , double quoting issue reasons you might elect to encode your database dump containing a column containing a column that holds JSON data (MySQL sees this as blob data). Then you might need to import this dump again. In those cases you can decode the hexadecimal strings using the MySQL CONVERT function into the original string with utf8mb4 encoding.This is how you do it.
stackoverflow  mysql  mysql5.7  mysqldump  dump  blob  data  utf8mb4  column  convert  decode  hexadecimal  howto  example  guide  reference 
april 2018 by racl101
python - Take multiple lists into dataframe - Stack Overflow
Note, that each is that makes up your dataframe should be a column of values. That is, each value in a given list makes up a value in a given column. The number of items in the list must be the same for all lists since the index position of a given element in the lest corresponds to a row.
stackoverflow  howto  create  panda  dataframe  from  multiple  lists  column  values  example  guide  reference  python  python2.7 
april 2018 by racl101
python - Pandas csv-import: Keep leading zeros in a column - Stack Overflow
Use the dtype parameter to specify that the values under the CSV 'identifier' column, even though they are zero padded integers, to import them into the dataframe as strings and not convert them into integers.
python  howto  pandas  csv  import  prevent  keep  leading  zeros  zeroes  column  example  guide  reference  padded  preserve  string 
september 2017 by racl101
MySQL count all NULL columns - Stack Overflow
Shows how to count rows with columns containing null values and their counts.
mysql  howto  example  stackoverflow  guide  reference  count  column  null  value  query  database 
september 2017 by racl101
mysql - Copy values from one column to another in the same table - Stack Overflow
Shows how to set a column to the values of another column within the same table for every row.
Mysql  Stackoverflow  query  copy  value  column  SQL  Howto  example  update 
july 2015 by racl101
php - MySQL Inner Join Update - Stack Overflow
Shows how to update a column with values from another colunn on another table using an inner join clause. Using this in 091 - LTR Mechanical Ltd website.
example  query  update  SQL  table  column  Howto  inner  Mysql  Stackoverflow  Database  JOIN 
july 2015 by racl101

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