database-cursor

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What will a SQLiteCursor do if a column is null?

I want to get an integer from a Cursor returned from a SQLite query, but I know the integer may be null.Unfortunately I can\'t find any Cursor method allowing me to check this.[详细]

2023-04-13 05:49 分类：问答
How to fetch the continuous list with PostgreSQL in web

I am making an API over HTTP that fetches many rows from PostgreSQL with pagination. In ordinary c开发者_C百科ases, I usually implement such pagination through naive OFFET/LIMIT clause. However, there[详细]

2023-04-12 10:27 分类：问答
How to get sum of amount of all databases together through cursor

I am stucking in one place in sql query. I have 20 databases and all database\'s table name and columns name are same but data is different. I am creating a sql query to get payment amount of particul[详细]

2023-04-11 03:39 分类：问答
Oracle ODP.NET Cursor Leak?

I\'m running into an open cursor limit issue with using the following code.The open cursor limit on the oracle db is set to around 1000.The following code seems to hold onto the cursors even though I\[详细]

2023-04-08 05:19 分类：问答
Determine a cursor by condition

In SQL Server for CURSOR we say: CREATE PROCEDURE SP_MY_PROC (@BANKID VARCHAR(6)=\'\') -------------------------------[详细]

2023-04-08 03:55 分类：问答
Disadvantages of Sql Cursor

I was studying cursor and I read somewhere that. Each time you fetch a row from the cursor, it results in a network round trip whereas normal select query makes only one round trip however large the r[详细]

2023-04-07 13:38 分类：问答
Is a cursor the only alternative to do this kind of operation

I\'m trying to optimize a long transaction and I\'ve seen that the following is done quite a few times:[详细]

2023-04-06 06:02 分类：问答
Possible complications for not closing database cursors?

What are the possible complications and repercussions if you do not close cursors for your Ora开发者_Python百科cle database?Since your developers are complaining about the performance hit of repeatedl[详细]

2023-04-04 10:16 分类：问答
Objectify paging with Cursors

I have this method in my RPC service: @Override public Entr开发者_运维问答ata[] getEntrate(int from, int to) {[详细]

2023-03-27 03:38 分类：问答
Why do my JDBC cursors perform so slowly?

I\'m following verbatim the code outlined in this page (Example 5.2). My query is quite simple SELECT *FROM \"LSERAW\" WHERE \"DATETIME\">=\'Sat Jan 01 00:00:00 EST 2011\' and \"DATETIME\"<=\'Th[详细]

2023-03-27 03:06 分类：问答