sql - What is difference between ANSI and non-ANSI joins, and …
The non-ANSI notations can only express limited conditions. The first is a legacy Oracle specific way of writing joins, the second is ANSI SQL-92+ standard and is the preferred one.
mysql - What does SQL Select symbol || mean? - Stack Overflow
Apr 29, 2014 · sql server: + (infix operator), concat ( vararg function ) Edit : Now Azure SQL also supports ANSI SQL standard || operator for string concatenation. Docs link.
sql server - Will ANSI JOIN vs. non-ANSI JOIN queries perform ...
The two queries are the same, except the second is ANSI-92 SQL syntax and the first is the older SQL syntax which didn't incorporate the join clause. They should produce exactly the same …
Should I use != or <> for not equal in T-SQL? - Stack Overflow
Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL Server", they say "As …
Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
At every company I have worked at, I have found that people are still writing their SQL queries in the ANSI-89 standard: select a.id, b.id, b.address_1 from person a, address b where a.id = …
Exactly what dialect of SQL does snowflake support
Oct 11, 2021 · I get that Snowflake has it's own extensions to ANSI SQL such as UNDROP. However, I would like to know what "dialect" (for want of a better word of SQL) does …
reference - ANSI SQL Manual - Stack Overflow
Aug 16, 2013 · Can anyone recommend a good ANSI SQL reference manual? I don't necessary mean a tutorial but a proper reference document to lookup when you need either a basic or …
sql - Oracle Joins - Comparison between conventional syntax VS …
Sep 19, 2013 · SQL will not start to perform better after migration to ANSI syntax - it's just different syntax. Oracle strongly recommends that you use the more flexible FROM clause join …
What are the differences between T-SQL, SQL Server and SQL
Sep 19, 2013 · SQL is the basic ANSI standard for accessing data in a relational database. When you see "MSSQL" it is referring to Microsoft SQL Server, which is the entire database …
sql - What is the difference between JOIN and INNER JOIN
per the ANSI SQL 92 specification, they are identical: "3) If a <qualified join> is specified and a <join type> is not specified, then INNER is implicit."