Explain Codes LogoExplain Codes Logo

Sql

Get most recent row for given ID

sql
prompt-engineering
best-practices
join

Create FILE encountered operating system error 5(failed to retrieve text for this error. Reason: 15105)

sql
file-permissions
sql-server-management-studio
database-attachment

Drop all tables command

sql
database-management
sqlite
sql-commands

Are there disadvantages to using a generic varchar(255) for all text-based fields?

sql
database-optimization
data-integrity
validation

Sql multiple join statement

sql
join
subqueries
best-practices

"case" statement within "WHERE" clause in SQL Server 2008

sql
best-practices
performance
sql-optimization

How can I join multiple SQL tables using the IDs?

sql
join
best-practices
data-management

Sql query to make all data in a column UPPER CASE?

sql
case-conversion
sql-functions
database-management

Setting two scalar variables in one SELECT statement?

sql
best-practices
performance
sql-server

Sql Server: Replace specific word in all rows of a particular column

sql
best-practices
join
sql-server

How to extract group from regular expression in Oracle?

sql
regex
pattern-matching
string-extraction

Fastest way to copy a table in mysql?

sql
data-integrity
mysql-performance
database-optimization

How to check if a cursor exists (open status)

sql
cursor-status
error-handling
best-practices

Retrieving Data from SQL Using pyodbc

sql
pandas
dataframe
join

Querying data by joining two tables in two databases on different servers

sql
linked-servers
openquery
temporary-tables

How to find rows that have a value that contains a lowercase letter

sql
case-sensitivity
collation
regex

Best practices on primary key, auto-increment, and UUID in SQL databases

sql
best-practices
performance
database-design

Org.postgresql.util.psqlexception: FATAL: sorry, too many clients already

sql
connection-pooling
database-performance
postgresql-optimization

Error 1148: The used command is not allowed with this MySQL version

sql
mysql
database-security
data-import

Sql: Two select statements in one query

sql
join
union
sql-queries