Constructing a query at runtime with string concatenation operations and executing the query from that string.

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1
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3answers
89 views

Copy table with separate sequences for serial columns

While creating a column management tool I came across the need to quickly replicate tables in PostgreSQL so I would not test new tools with non-test tables. To effectively test the new column tool ...
1
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2answers
53 views

Reset the sequence of a serial PK with dynamic SQL

How can I dynamically reference a sequence name (as below) using a combination of strings and DECLARE variables? Is the code below proper or is there another method of doing this? My goal is to do ...
19
votes
1answer
12k views

Create index if it does not exist

I am working on a function that allows me to add an index if it does not exist. I am running into the problem that I cannot get a list of indexes to compare to. Any thoughts? This is a similar issue ...
6
votes
2answers
1k views

Generate script to automate renaming of default constraints

Background: Some of our default column constraints were generated without explicit names, so we get fun names that vary from server to server like: DF__User__TimeZoneIn__5C4D869D I would prefer to ...
1
vote
2answers
3k views

PostgreSQL stored procedure to return rows or empty set

I have a stored procedure, which RETURNS SETOF ct_custom_type and inside I do RETURN QUERY EXECUTE 'some dynamic query' And I want to do this: If this 'dynamic query' returns >= 10 rows, I want to ...
3
votes
2answers
387 views

Bug in PL/pgSQL function creation

I don't know if this question better suits here or in SO ... This is a script that I'd like to launch (the code of the function was copied from a question on SO): \c mydb create or replace function ...
10
votes
1answer
13k views

Stored Procedure to return dynamically created table data

Quick back story, we are working with an outside vendor that has a survey system. The system is not necessarily designed the best in that when you create a new survey and the system creates a new ...
7
votes
2answers
338 views

Why does this cursor produce results in the incorrect order?

I am writing some dynamic SQL to identify and, perhaps if I'm feeling crazy enough, automatically convert my NONCLUSTERED indexes into CLUSTERED indexes. The line ORDER BY 1,2,3 DESC; in the SQL ...
3
votes
2answers
2k views

How to make a flexible service broker receive in a stored sql procedure, how to pass “FROM” parameter into receive

a while ago I asked a question about how to make begin dialog and send more flexible so that it can be embedded in a procedure that takes the to, from, parameters as sysname variables. Service Broker ...
1
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1answer
71 views

EXECUTE within function not using index?

I have an accounts table with ~200k rows and an index for these columns: account_type_id BIGINT , member_id BIGINT , external_id VARCHAR(64) CREATE INDEX account_full_qualifiers_idx ON ...
1
vote
2answers
375 views

Dynamic UPDATE fails due to unwanted parenthesis around string in plpgsql

Using PostgreSQL 9.3.4 on Mac OSX 10.9.2 with Postgres.app. I want to apply a function to all columns in a table, specifically I want to trim white space. So far I've got this in a file test.sql: ...
1
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2answers
56 views

Trunc sytax problem

If any one could help me with the syntax issues which I am facing here. sqlshipped := ' and a.ORDS_COMPLETED_DATE between ' ||shippedfrom ||' and trunc(' ...
1
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2answers
8k views

How can I dynamically alias columns?

I have a table (not designed by me) which has 20 variably named columns. That is, depending on what type of record you are looking at, the applicable name of the column can change. The possible ...