What is the difference between ( := ) and ( = ) in PostgreSQL?
125824
The forgotten assignment operator "=" and the commonplace ":="
124471
Comparing nullable column values using "IS NULL" versus "= NULL"
16137
What is the use of the square brackets [] in sql statements?
52455
Insert an input variable in a query in PostgreSQL
142099
Difference between CTE and SubQuery?
44726
What is the difference between HAVING and WHERE in SQL?
23405
What does the "@" symbol do in SQL?
127039
What is the difference between & and && in Java?
50416
What does the >?= operator mean?
83063
Count(*) vs Count(1) - SQL Server
714
What are the differences between "=" and "<-" assignment operators in R?
9024
SQL Logic Operator Precedence: And and Or
72519
What's the difference between "==" and "=~"?
132552
ORA-00918: column ambiguously defined in SELECT *
26972
What are '$$' used for in PL/pgSQL
40167
What does "select((select(s),$|=1)[0])" do in Perl?
155634
Why can't we use wildcard character * in a soql as we can use in sql ?