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What is the difference between “Flush Magento Cache” and “Flush Cache Storage” in magento's cache ma
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You have to flush cache storage if you modify the columns of a table (add or remove column) because magento executes a mysql DESCRIBE query and then saves the result in cache.
This cache is not cleared if you only click on "Flush Magento Cache" button.
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How to create and handle composite primary key in JPA
...name = "VERSION")
private Long operatorId;
}
Entity class:
@Entity
@Table (name = "YOUR_TABLE_NAME")
public class Entry implements Serializable {
@EmbeddedId
public EntryKey getKey() {
return this.key;
}
public void setKey(EntryKey id) {
this.id = id;
}
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How many files can I put in a directory?
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I had the same. I have migrated a table's blob column, each blob column I have exported as a file. It's around 8 million files :)
– Spike
Aug 26 '19 at 14:42
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Formatting Numbers by padding with leading zeros in SQL Server
We have an old SQL table that was used by SQL Server 2000 for close to 10 years.
13 Answers
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Postgres: Distinct but only for one column
I have a table on pgsql with names (having more than 1 mio. rows), but I have also many duplicates. I select 3 fields: id , name , metadata .
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Understanding :source option of has_one/has_many through of Rails
...ular, to represent the model name, instead of :breeds which represents the table name? E.g. has_many :dog_breeds, :through => :dogs, :source => :breed (no s suffixing :breed)?
– LazerSharks
Dec 30 '14 at 22:22
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Why C# implements methods as non-virtual by default?
...erformance concern because every method call must use the object's Virtual Table. Moreover, this strongly limits the Just-In-Time compiler's ability to inline methods and perform other kinds of optimization.
3- Most importantly, if methods are not virtual by default, you can guarantee the behavior ...
How to pass anonymous types as parameters?
...ruct Data {
public string ColumnName;
}
var query = (from name in some.Table
select new Data { ColumnName = name });
MethodOp(query);
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MethodOp(IEnumerable<Data> enumerable);
In this case though, you are only selecting a single field, so it may be easier to just select the ...
Effect of a Bitwise Operator on a Boolean in Java
...| have different precedence from & and |.
Extract from the precedence table (with highest precedence at the top).
bitwise AND &
bitwise exclusive OR ^
bitwise inclusive OR |
logical AND &&
logical OR ||
What this mean...
Why isn't my Pandas 'apply' function referencing multiple columns working? [closed]
...3-54] is easy for me to understand (and hopefully remember) ... on a large table is it as quick as the other form of apply presented?
– whytheq
Sep 4 '16 at 9:48
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