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Fast way to discover the row count of a table in PostgreSQL
...bject Identifier Types.
Use to_regclass('myschema.mytable') in Postgres 9.4+ to avoid exceptions for invalid table names:
How to check if a table exists in a given schema
TABLESAMPLE SYSTEM (n) in Postgres 9.5+
SELECT 100 * count(*) AS estimate FROM mytable TABLESAMPLE SYSTEM (1);
Like @a_...
Better way to check variable for null or empty string?
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edited Jun 14 '18 at 4:58
Akira Yamamoto
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How to merge remote changes at GitHub?
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edited Feb 8 '12 at 9:47
community wiki
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Send data from activity to fragment in Android
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edited Nov 28 '13 at 20:41
Terry
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answered Oc...
Sending emails with Javascript
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nickfnickf
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How to use shared memory with Linux in C
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edited Mar 14 at 16:12
Jonathan Leffler
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Credit card expiration dates - Inclusive or exclusive?
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answered Sep 10 '08 at 13:40
rjziirjzii
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How to get the URL without any parameters in JavaScript?
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lonesomedaylonesomeday
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Remove all but numbers from NSString
...w can i do it?
– LiangWang
May 28 '14 at 5:28
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@Jacky in the example above you would replace [NS...