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Build complex rails SQL

IF NOT EXISTS in Merge statement?

sql sql-server merge

self referencing table with child table

When would sys.database_permissions contain a row with state = 'R'?

NOLOCK with Multithreading

Can't add index to persisted computed column because it is "of a type that is invalid for use as a key"

sql sql-server clr

SQL Server - Round TIME values to the next minute

node.js + postgres database transaction management

How can I prevent date overlaps in SQL?

sql tsql sql-server-2008-r2

T-SQL try ... catch and multiple batches (2 begin...end, if...else)

Is single sql statement always atomic in innodb?

mysql sql innodb

Yii limit on related model while querying

php sql yii limit

Checking for maximum length of consecutive days which satisfy specific condition

mysql sql

How to make a foreign key with a constraint on the referenced table in PostgreSQL

sql postgresql constraints

SQL query to retrieve the single line of data with desired values for the columns

Is a SQL Server index B-tree a flat structure or a depth structure

SSAS One to Many Dimensional Relationship

JPA GROUP BY entity - is this possible?

java sql hibernate jpa

MySQL INSERT with multiple nested SELECTs

sql select insert nested

Can't UNION ALL on a temporary table?

mysql sql