大约有 6,100 项符合查询结果（耗时：0.0342秒） [XML]
postgresql: INSERT INTO … (SELECT * …)
...connect remote database and fetch result. For example:
psql dbtest
CREATE TABLE tblB (id serial, time integer);
INSERT INTO tblB (time) VALUES (5000), (2000);
psql postgres
CREATE TABLE tblA (id serial, time integer);
INSERT INTO tblA
SELECT id, time
FROM dblink('dbname=dbtest', 'SELECT ...
error, string or binary data would be truncated when trying to insert
...ink to yourself... The field is NOT big enough to hold my data.
Check the table structure for the customers table. I think you'll find that the length of one or more fields is NOT big enough to hold the data you are trying to insert. For example, if the Phone field is a varchar(8) field, and you ...
SQL Server equivalent to MySQL enum data type?
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Why not use a table that defines valid values, and then use a foreign key constraint instead?
– Elaskanator
Dec 5 '18 at 17:04
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Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
... that SQL Server can access the data from indexes rather than querying the table data.
Here's a post I wrote about it: The real reason select queries are bad index coverage
It's also less fragile to change, since any code that consumes the data will be getting the same data structure regardless...
How to export table as CSV with headings on Postgresql?
I'm trying to export a PostgreSQL table with headings to a CSV file via command line, however I get it to export to CSV file, but without headings.
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MySQL select one column DISTINCT, with corresponding other columns
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try this query
SELECT ID, FirstName, LastName FROM table GROUP BY(FirstName)
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Disable sorting for a particular column in jQuery DataTables
I am using the jQuery DataTables plugin to sort the table fields. My question is: how do I disable sorting for a particular column? I have tried with the following code, but it did not work:
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Can you create nested WITH clauses for Common Table Expressions?
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While not strictly nested, you can use common table expressions to reuse previous queries in subsequent ones.
To do this, the form of the statement you are looking for would be
WITH x AS
(
SELECT * FROM MyTable
),
y AS
(
SELECT * FROM x
)
SELECT * FROM y
...
Obfuscated C Code Contest 2006. Please explain sykes2.c
...ry 64th character, it outputs a newline. Otherwise, it uses a pair of data tables to figure out what to output, and puts either character 32 (a space) or character 33 (a !). The first table (">'txiZ^(~z?") is a set of 10 bitmaps describing the appearance of each character, and the second table ("...
How to tell when UITableView has completed ReloadData?
I am trying to scroll to the bottom of a UITableView after it is done performing [self.tableView reloadData]
19 Answers
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