大约有 3,610 项符合查询结果（耗时：0.0169秒） [XML]
NULL values inside NOT IN clause
... 'X', 'Y' )" actually is an alias for A <> 'X' AND A <> 'Y' in SQL. (I see that you discovered this yourself in stackoverflow.com/questions/3924694/…, but wanted to make sure your objection was addressed in this question.)
– Ryan Olson
Dec 27 '10...
SQL update fields of one table from fields of another one
...ax ... without specifying the column names?
General solution with dynamic SQL
You don't need to know any column names except for some unique column(s) to join on (id in the example). Works reliably for any possible corner case I can think of.
This is specific to PostgreSQL. I am building dynamic co...
Converting Select results into Insert script - SQL Server [closed]
I have SQL Server 2008 , SQL Server Management Studio.
18 Answers
18
...
Find index of last occurrence of a sub-string using T-SQL
...tforward way of finding the index of the last occurrence of a string using SQL? I am using SQL Server 2000 right now. I basically need the functionality that the .NET System.String.LastIndexOf method provides. A little googling revealed this - Function To Retrieve Last Index - but that does n...
Turn off constraints temporarily (MS SQL)
...
You can disable FK and CHECK constraints only in SQL 2005+. See ALTER TABLE
ALTER TABLE foo NOCHECK CONSTRAINT ALL
or
ALTER TABLE foo NOCHECK CONSTRAINT CK_foo_column
Primary keys and unique constraints can not be disabled, but this should be OK if I've understood you...
SQL- Ignore case while searching for a string
...eOrderShipped
PriceOrderShippedInbound
PriceOrderShippedOutbound
In SQL I need to write a query which searches for a string in a table. While searching for a string it should ignore case. For the below mentioned SQL query
...
SQL - using alias in Group By
Just curious about SQL syntax. So if I have
10 Answers
10
...
Export specific rows from a PostgreSQL table as INSERT SQL script
...mp --table=export_table --data-only --column-inserts my_database > data.sql
--column-inserts will dump as insert commands with column names.
--data-only do not dump schema.
As commented below, creating a view in instead of a table will obviate the table creation whenever a new export is neces...
Why would someone use WHERE 1=1 AND in a SQL clause?
Why would someone use WHERE 1=1 AND <conditions> in a SQL clause (Either SQL obtained through concatenated strings, either view definition)
...
What is Ad Hoc Query?
I'm reading a book about SQL. In that book there's the term Ad Hoc Query , which I don't understand.
10 Answers
...