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Non-Relational Database Design [closed]
...d in hearing about design strategies you have used with non-relational "nosql" databases - that is, the (mostly new) class of data stores that don't use traditional relational design or SQL (such as Hypertable, CouchDB, SimpleDB, Google App Engine datastore, Voldemort, Cassandra, SQL Data Services...
How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
...terribly troublesome old date-time classes such as java.util.Date and java.sql.Timestamp are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
Dec 24 '18 at 20:01
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Solutions for INSERT OR UPDATE on SQL Server
...wer to a very similar previous question
@Beau Crawford's is a good way in SQL 2005 and below, though if you're granting rep it should go to the first guy to SO it. The only problem is that for inserts it's still two IO operations.
MS Sql2008 introduces merge from the SQL:2003 standard:
merge tabl...
How can I list all foreign keys referencing a given table in SQL Server?
I need to remove a highly referenced table in a SQL Server database. How can I get a list of all the foreign key constraints I will need to remove in order to drop the table?
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How to view corresponding SQL query of the Django ORM's queryset?
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doesnt work. i see <django.db.models.sql.query.Query object
– dopatraman
Jan 29 '19 at 23:14
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致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术
...处于某一块，那么大流量项目可以让你清晰上下游关系、性能瓶颈问题分析、关注细节实现。通过大流量项目，会让你从之前草草实现功能，逐步精细化的设计完成项目，会让你考虑的更多，实现的更细心，发现问题更敏锐。适...
Jdbctemplate query for string: EmptyResultDataAccessException: Incorrect result size: expected 1, ac
...uery method instead.
List<String> strLst = getJdbcTemplate().query(sql,new RowMapper {
public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
return rs.getString(1);
}
});
if ( strLst.isEmpty() ){
return null;
}else if ( strLst.size() == 1 ) { // list contains ...
What are the main performance differences between varchar and nvarchar SQL Server data types?
I'm working on a database for a small web app at my school using SQL Server 2005 .
I see a couple of schools of thought on the issue of varchar vs nvarchar :
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Convert a string to int using sql query
How to convert a string to integer using SQL query on SQL Server 2005?
4 Answers
4
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How do you clear the SQL Server transaction log?
I'm not a SQL expert, and I'm reminded of the fact every time I need to do something beyond the basics. I have a test database that is not large in size, but the transaction log definitely is. How do I clear out the transaction log?
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