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Store query result in a variable using in PL/pgSQL
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I think you're looking for SELECT INTO:
select test_table.name into name from test_table where id = x;
That will pull the name from test_table where id is your function's argument and leave it in the name variable. Don't leave out the table name prefix on test_table.name or ...
How can I create a copy of an Oracle table without copying the data?
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Just use a where clause that won't select any rows:
create table xyz_new as select * from xyz where 1=0;
Limitations
The following things will not be copied to the new table:
sequences
triggers
indexes
some constraints may not be copied
materialized view logs
This also does no...
Physical vs. logical / soft delete of database record?
...and you don't have to worry about cascading a delete through various other tables in the database that reference the row you are deleting. Disadvantage is that you have to code any reporting/display methods to take the flag into account.
As far as if it is a common practice - I would say yes, but ...
Why were pandas merges in python faster than data.table merges in R in 2012?
...ark performs very fast in-memory merges. It's even faster than the data.table package in R (my language of choice for analysis).
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MySQL: @variable vs. variable. What's the difference?
...t work because my_var is not a system variable, whereas we can do set@@big_tables=1, set@@session.big_tables=1, and set session big_tables=1 because big_tables is a system variable.
– Pacerier
May 24 '15 at 23:10
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Rails 4 multiple image or file upload using carrierwave
...t saying it wouldn't be possible, I'm just saying it would be ugly. A join table is a much better idea.
– Toby 1 Kenobi
Mar 11 '16 at 1:12
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CSS vertical alignment text inside li
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Define the parent with display: table and the element itself with vertical-align: middle and display: table-cell.
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Postgres: SQL to list table foreign keys
Is there a way using SQL to list all foreign keys for a given table? I know the table name / schema and I can plug that in.
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SQL keys, MUL vs PRI vs UNI
...hat the field is (part of) a non-unique index. You can issue
show create table <table>;
To see more information about the table structure.
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How to escape apostrophe (') in MySql?
...y be written as “''”.
(Also, you linked to the MySQL 5.0 version of Table 8.1. Special Character Escape Sequences, and the current version is 5.6 — but the current Table 8.1. Special Character Escape Sequences looks pretty similar.)
I think the Postgres note on the backslash_quote (string)...