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Erwin Brandstetter

Vienna, Austria

Database expert.

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Top Questions
33 votes

USING construct in JOIN clause can introduce optimization barriers in certain cases?

postgresql performance optimization join select asked Apr 12 '12 at 8:06
dba.stackexchange.com

20 votes

Syntax highlighting: <!-​- language: lang-none --> does not seem to work for block quote

bug code-formatting syntax-highlighting markdown-rendering asked Sep 7 '15 at 15:45
meta.stackexchange.com

18 votes

“Recheck Cond:” line in query plans with a bitmap index scan

postgresql index postgresql-9.4 query-plan asked Jul 8 '15 at 0:25
dba.stackexchange.com

16 votes

Naming conflict between function parameter and result of JOIN with USING clause

postgresql join plpgsql parameter naming-convention asked Jul 2 '15 at 23:54
dba.stackexchange.com

16 votes

PostgreSQL functions returning void

postgresql stored-procedures null plpgsql void asked Nov 30 '11 at 1:15
stackoverflow.com

14 votes

Description page for the “Edit questions and answers” privilege needs an edit

bug status-completed stackoverflow privileges asked Oct 10 '11 at 6:19
meta.stackexchange.com

13 votes

Why is code excluded from phrase search?

bug search exact-phrase asked May 17 '17 at 19:27
meta.stackexchange.com

13 votes

Constraint defined DEFERRABLE INITIALLY IMMEDIATE is still DEFERRED?

postgresql constraints postgresql-9.1 asked Apr 5 '12 at 16:19
stackoverflow.com

12 votes

Inconsistencies in the rendering of lists

bug status-completed markdown markdown-rendering asked Nov 4 '14 at 1:39
meta.stackexchange.com

11 votes

Surprising results for data types with type modifier

postgresql datatypes cte debugging cast asked Sep 26 '15 at 0:36
dba.stackexchange.com

1 2 3

Top Answers
989
Select first row in each GROUP BY group?
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PostgreSQL error: Fatal: role “username” does not exist
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Insert text with single quotes in PostgreSQL
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328
Create unique constraint with null columns
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327
Ignoring time zones altogether in Rails and PostgreSQL
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324
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319
Select rows which are not present in other table
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PostgreSQL Crosstab Query
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Check if value exists in Postgres array
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PostgreSQL LIKE query performance variations
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228
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226
Are PostgreSQL column names case-sensitive?
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224
How to concatenate columns in a Postgres SELECT?
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208
PostgreSQL create table if not exists
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203
Best way to select random rows PostgreSQL
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200
Give all the permissions to a user on a DB
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185
Query a parameter (postgresql.conf setting) like “max_connections”
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181
Fast way to discover the row count of a table in PostgreSQL
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177
Concatenate multiple result rows of one column into one, group by another column
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174
Calculating and saving space in PostgreSQL
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173
Does PostgreSQL support “accent insensitive” collations?
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170
How do I query using fields inside the new PostgreSQL JSON datatype?
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162
Query for array elements inside JSON type
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160
Optimizing queries on a range of timestamps (two columns)
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155
Pattern matching with LIKE, SIMILAR TO or regular expressions in PostgreSQL
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155
Export specific rows from a PostgreSQL table as INSERT SQL script
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153
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152
Postgres manually alter sequence
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