大约有 47,000 项符合查询结果(耗时:0.0281秒) [XML]

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SQL variable to hold list of integers

...e @listOfIDs table (id int); insert @listOfIDs(id) values(1),(2),(3); select * from TabA where TabA.ID in (select id from @listOfIDs) or declare @listOfIDs varchar(1000); SET @listOfIDs = ',1,2,3,'; --in this solution need put coma on begin and end select * from TabA where charindex(',' + C...
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typecast string to integer - Postgres

...ur value is an empty string, you can use NULLIF to replace it for a NULL: SELECT NULLIF(your_value, '')::int share | improve this answer | follow | ...
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What is the difference between JOIN and UNION?

...t -- completely different operations. Trivial example of UNION: mysql> SELECT 23 AS bah -> UNION -> SELECT 45 AS bah; +-----+ | bah | +-----+ | 23 | | 45 | +-----+ 2 rows in set (0.00 sec) similary trivial example of JOIN: mysql> SELECT * FROM -> (SELECT 23 AS bah...
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How to get the caret column (not pixels) position in a textarea, in characters, from the start?

...refox, Safari (and other Gecko based browsers) you can easily use textarea.selectionStart, but for IE that doesn't work, so you will have to do something like this: function getCaret(node) { if (node.selectionStart) { return node.selectionStart; } else if (!document.selection) { return ...
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How do I calculate tables size in Oracle

...BLE_NAME FORMAT A32 COLUMN OBJECT_NAME FORMAT A32 COLUMN OWNER FORMAT A10 SELECT owner, table_name, TRUNC(sum(bytes)/1024/1024) Meg, ROUND( ratio_to_report( sum(bytes) ) over () * 100) Percent FROM (SELECT segment_name table_name, owner, bytes FROM dba_segments WHERE segment_type IN...
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How to generate the “create table” sql statement for an existing table in postgreSQL

... text; column_record record; BEGIN FOR column_record IN SELECT b.nspname as schema_name, b.relname as table_name, a.attname as column_name, pg_catalog.format_type(a.atttypid, a.atttypmod) as column_type, CASE WHEN ...
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Combining “LIKE” and “IN” for SQL Server [duplicate]

... Effectively, the IN statement creates a series of OR statements... so SELECT * FROM table WHERE column IN (1, 2, 3) Is effectively SELECT * FROM table WHERE column = 1 OR column = 2 OR column = 3 And sadly, that is the route you'll have to take with your LIKE statements SELECT * FROM tabl...
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xcode-select active developer directory error

...red node-gyp ... but could be triggered by anything which requires xcode-select . 23 Answers ...
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How to set the first option on a select box using jQuery?

I have two HTML select boxes. I need to reset one select box when I make a selection in another. 17 Answers ...
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jQuery get value of selected radio button

The problem statement is simple. I need to see if user has selected a radio button from a radio group. Every radio button in the group share same id. ...