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database - How to Open/Close SQLite db in Android Properly
    I have an app that functions properly and does not force close or crash. But when I look at LogCat, it ... = dbHelper.getWritableDatabase(); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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database design - Mysql, storing multiple value in single column from another table
    Bear with me, im really bad at explaining thing and i dont even know an appropriate title for this problem Ok guys ... good way to store a data See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.2k views
1 answer
database - Cloud Firestore document locking
    To ensure exclusive use of a Cloud Firestore document in a shared setting, is it sufficient to read, then ... lockedBy') within a transaction? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
1.1k views
1 answer
database - How to Open/Close SQLite db in Android Properly
    I have an app that functions properly and does not force close or crash. But when I look at LogCat, it ... = dbHelper.getWritableDatabase(); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
876 views
1 answer
database design - Mysql, storing multiple value in single column from another table
    Bear with me, im really bad at explaining thing and i dont even know an appropriate title for this problem Ok guys ... good way to store a data See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
1.1k views
1 answer
database - Cloud Firestore document locking
    To ensure exclusive use of a Cloud Firestore document in a shared setting, is it sufficient to read, then ... lockedBy') within a transaction? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
984 views
1 answer
database - How to Open/Close SQLite db in Android Properly
    I have an app that functions properly and does not force close or crash. But when I look at LogCat, it ... = dbHelper.getWritableDatabase(); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
879 views
1 answer
database design - Mysql, storing multiple value in single column from another table
    Bear with me, im really bad at explaining thing and i dont even know an appropriate title for this problem Ok guys ... good way to store a data See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
1.3k views
1 answer
database - Cloud Firestore document locking
    To ensure exclusive use of a Cloud Firestore document in a shared setting, is it sufficient to read, then ... lockedBy') within a transaction? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
986 views
1 answer
database - Rails: Is the version number in 'schema.rb' used for anything?
    Now that Rails has timestamped migrations, the single version number at the top of /db/schema.rb seems pointless. ... schema definition ... end See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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955 views
1 answer
database - Is it possible to map a table name for a domain object dynamically in grails?
    I have a domain that looks something like class Foo { String name static mapping = { table 'foo' } } but ... this is even possible? Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
1.2k views
1 answer
database - How to Open/Close SQLite db in Android Properly
    I have an app that functions properly and does not force close or crash. But when I look at LogCat, it ... = dbHelper.getWritableDatabase(); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
888 views
1 answer
database design - Mysql, storing multiple value in single column from another table
    Bear with me, im really bad at explaining thing and i dont even know an appropriate title for this problem Ok guys ... good way to store a data See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
1.0k views
1 answer
database - Cloud Firestore document locking
    To ensure exclusive use of a Cloud Firestore document in a shared setting, is it sufficient to read, then ... lockedBy') within a transaction? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
937 views
1 answer
database - What Applications Don't Need ACID?
    Sorry for the ignorant question, but what kind of applications wouldn't require an ACID compliant database server? ... or isolation. Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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856 views
1 answer
database - Simple password encryption
    What is a good, simple encryption scheme for protecting passwords in a database? I don't necessarily need ... terribly slow or insecure. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.1k views
1 answer
database - ROW_NUMBER() without over in SQL
    Is there any way to use ROW_NUMBER() in SQL without using OVER, because I want to use sorting. I have a Grid ... to put order by using ROWNUM. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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883 views
1 answer
database - LIMITing an SQL JOIN
    I am trying to limit the following SQL statement. SELECT expense.*, transaction.* FROM expense INNER JOIN ... and only one transaction. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.1k views
1 answer
database - mongoose difference of findOneAndUpdate and update
    What is the difference between findOneAndUpdate and update? Both accept criteria to query and doc to update. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.1k views
1 answer
database - SQL query to find Nth highest salary
    I am referring to following query to find Nth highest salary of a employee. select sal from emp t where &n ... and produces result ? Thank you. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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993 views
1 answer
database - Django: How do I model a tree of heterogeneous data types?
    I need to store a tree data structure in my database, for which I plan on using django-treebeard or possibly ... you very much for the answers. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
906 views
1 answer
database - setSelection on Spinner based on rowId
    I have a Spinner View that's populated through a SimpleCursorAdapter. Based on the selection I need to save the ... the rowid in the database. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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915 views
1 answer
database - Performance of VIEW vs. SQL statement
    I have a query that goes something like the following: select <field list> from <table list> where <join ... where sec_type_id = 494) ) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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873 views
1 answer
database - Mysql storage engine for log table
    What is the best storage engine to use for a log table on mysql? The table will have a couple if id ... it and recreate it. Any suggestions? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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database - What is CAS in NoSQL and how to use it?
    Write operations on Couchbase accept a parameter cas (create and set). Also the return result object of any non-data ... me if I am wrong. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.1k views
1 answer
database - Android Spinner Selected Item
    I am populating a spinner from the database like this // Populating the City Spinner Cursor cities = db.cityList( ... city id from the database. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.2k views
1 answer
database - How can I recover from a missing blob in a Git repository?
    I'm running Git 1.6.4.2. Garbage collection is failing saying "error: unable to find <SHA1>". I've ... is causing Git prune to retain it? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1 answer
database - Query last day, last week, last month SQLite
    I have this table in my Android SQLite DB: CREATE TABLE statistics (subject TEXT, hits INTEGER, fails ... virtual device emulator? Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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