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Batch script to delete files
...der" changes the current directory the batch will be looking at. keep the
quotations and change path of folder to which ever path you aiming for.
del "file name/ or *.txt etc..." will delete the file in the current directory your batch is looking at, just don't add a directory path before the file...
What is cardinality in MySQL?
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It is an estimate of the number of unique values in the index.
For a table with a single primary key column, the cardinality should normally be equal to the number of rows in the table.
More information.
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A migration to add unique constraint to a combination of columns
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add_index :people, [:firstname, :lastname, :dob], :unique => true
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How can I declare and define multiple variables in one line using C++?
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int column = 0, row = 0, index = 0;
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How to implement a unique index on two columns in rails
I have a table and I'm trying to add a unique index on two columns. Those columns are also indexed. So my question is if I just can remove the indexes who were just for one column or if I have to use all three indexes:
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How do I remove newlines from a text file?
...? - - I think sed is the best option like described here stackoverflow.com/q/16414410/54964
– Léo Léopold Hertz 준영
Nov 5 '16 at 13:23
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Does order of where clauses matter in SQL?
...PLE having 3 columns ID, LastName, FirstName , none of these columns are indexed.
LastName is more unique, and FirstName is less unique.
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How to search for a part of a word with ElasticSearch
...use standard tokenizer and nGram just as a filter. Here is my setup:
{
"index": {
"index": "my_idx",
"type": "my_type",
"analysis": {
"index_analyzer": {
"my_index_analyzer": {
"type": "custom",
"tokenizer": "standard",
"filter": [
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Get child node index
...tensions such as jQuery, etc.), is there a way to determine a child node's index inside of its parent node without iterating over and comparing all children nodes?
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Java ArrayList replace at specific index
...reated an ArrayList of bulbs, and I'm trying to replace a bulb at specific index with another bulb. So with the following heading, how do I proceed?
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