大约有 37,000 项符合查询结果(耗时:0.0425秒) [XML]

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“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?

...base_name CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci; # For each table: ALTER TABLE table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; # For each column: ALTER TABLE table_name CHANGE column_name column_name VARCHAR(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci...
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What's the best way to join on the same table twice?

This is a little complicated, but I have 2 tables. Let's say the structure is something like this: 5 Answers ...
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How to export all data from table to an insertable sql format?

I have a Table (call it A_table ) in a database (call it A_db ) in Microsoft SQL Server Management Studio, and there are 10 rows. ...
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HTML table with fixed headers?

Is there a cross-browser CSS/JavaScript technique to display a long HTML table such that the column headers stay fixed on-screen and do not scroll with the table body. Think of the "freeze panes" effect in Microsoft Excel. ...
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How can I create a copy of an Oracle table without copying the data?

... Just use a where clause that won't select any rows: create table xyz_new as select * from xyz where 1=0; Limitations The following things will not be copied to the new table: sequences triggers indexes some constraints may not be copied materialized view logs This also does no...
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SELECT INTO using Oracle

... If NEW_TABLE already exists then ... insert into new_table select * from old_table / If you want to create NEW_TABLE based on the records in OLD_TABLE ... create table new_table as select * from old_table / If the purpose is...
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What's the difference between a temp table and table variable in SQL Server?

In SQL Server 2005, we can create temp tables one of two ways: 12 Answers 12 ...
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How to change column datatype in SQL database without losing data

... 0 (BIT = false), anything else will be turned into 1 (BIT = true). ALTER TABLE dbo.YourTable ALTER COLUMN YourColumnName BIT The other option would be to create a new column of type BIT, fill it from the old column, and once you're done, drop the old column and rename the new one to the old n...
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Best way to test if a row exists in a MySQL table

I'm trying to find out if a row exists in a table. Using MySQL, is it better to do a query like this: 12 Answers ...
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Why doesn't CSS ellipsis work in table cell?

... */ } solves the problem as well. Another possible solution is to set table-layout: fixed; for the table, and also set it's width. For example: http://jsfiddle.net/fd3Zx/5/ share | improve this...