大约有 37,000 项符合查询结果(耗时:0.0170秒) [XML]

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Postgres manually alter sequence

... ALTER SEQUENCE [sequence] RESTART WITH (SELECT MAX(col) from table); does not work, whereas SELECT setval('sequence', (SELECT (MAX(col) from table), TRUE); does work. I get a syntax error. (Postgres 9.4) – NuclearPeon Jul 21 '18 at 1:35 ...
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How do I show the schema of a table in a MySQL database?

From the MySQL console, what command displays the schema of any given table? 5 Answers ...
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SQL Server Output Clause into a scalar variable

Is there any "simple" way to do this or I need to pass by a table variable with the "OUTPUT ... INTO" syntax? 3 Answers ...
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How to find all the tables in MySQL with specific column names in them?

...rent column names that I want to look up in the entire DB and list out all tables which have those columns. Any easy script? ...
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How to efficiently build a tree from a flat structure?

... Store IDs of the objects in a hash table mapping to the specific object. Enumerate through all the objects and find their parent if it exists and update its parent pointer accordingly. class MyObject { // The actual object public int ParentID { get; set; ...
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select count(*) from table of mysql in php

... here is the code for showing no of rows in the table with PHP $sql="select count(*) as total from student_table"; $result=mysqli_query($con,$sql); $data=mysqli_fetch_assoc($result); echo $data['total']; ...
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Case insensitive searching in Oracle

...ur data to be the same case by using UPPER() or LOWER(): select * from my_table where upper(column_1) = upper('my_string'); or select * from my_table where lower(column_1) = lower('my_string'); If column_1 is not indexed on upper(column_1) or lower(column_1), as appropriate, this may force a f...
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Client-server synchronization pattern / algorithm?

...g every change (insert, update or delete) from any device into a "history" table. So if, for example, someone changes their phone number in the "contact" table, the system will edit the contact.phone field, and also add a history record with action=update, table=contact, field=phone, record=[contact...
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How to add JTable in JPanel with null layout?

I want to add JTable into JPanel whose layout is null . JPanel contains other components. I have to add JTable at proper position. ...
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Oracle query to fetch column names

I have a mySQL query to get columns from a table like this: 12 Answers 12 ...