大约有 43,000 项符合查询结果（耗时：0.0176秒） [XML]
How do I remove the first characters of a specific column in a table?
...
SELECT RIGHT(MyColumn, LEN(MyColumn) - 4) AS MyTrimmedColumn
Edit:
To explain, RIGHT takes 2 arguments - the string (or column) to operate on, and the number of characters to return (starting at the "right" side of the stri...
Is there any JSON Web Token (JWT) example in C#?
...gnedTokens = true,
IssuerSigningKeys = certificates.Values.Select(x => new X509SecurityKey(x)),
IssuerSigningKeyResolver = (token, securityToken, kid, validationParameters) =>
{
return certificates
.Where(x...
Find a value anywhere in a database
...OT NULL
BEGIN
SET @ColumnName = ''
SET @TableName =
(
SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) &...
Splitting string into multiple rows in Oracle
... be an improved way (also with regexp and connect by):
with temp as
(
select 108 Name, 'test' Project, 'Err1, Err2, Err3' Error from dual
union all
select 109, 'test2', 'Err1' from dual
)
select distinct
t.name, t.project,
trim(regexp_substr(t.error, '[^,]+', 1, levels.column_value...
SQL SELECT WHERE field contains words
I need a select which would return results like this:
15 Answers
15
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Can I concatenate multiple MySQL rows into one field?
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You can use GROUP_CONCAT:
SELECT person_id, GROUP_CONCAT(hobbies SEPARATOR ', ')
FROM peoples_hobbies
GROUP BY person_id;
As Ludwig stated in his comment, you can add the DISTINCT operator to avoid duplicates:
SELECT person_id, GROUP_CONCAT(DISTINCT ...
Which MySQL data type to use for storing boolean values
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When I do a select from the standard mysql command line client bit fields shows up completely blank. Because of this I prefer TINYINT(1).
– User
Nov 2 '12 at 0:53
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%Like% Query in spring JpaRepository
...hars as well as a space char following like in your query, as in
@Query("Select c from Registration c where c.place like %:place%").
Cf. http://docs.spring.io/spring-data/jpa/docs/current/reference/html.
You may want to get rid of the @Queryannotation alltogether, as it seems to resemble the st...
html select option separator
How do you make a separator in a select tag?
14 Answers
14
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Is there any boolean type in Oracle databases?
...l (boolc char(1), booln number(1)); insert into testbool values ('Y', 1 ); select dump(boolc), dump(booln) from testbool; That CHAR is stored: Typ=96 Len=1: 89 and that NUMBER: Typ=2 Len=2: 193,2 At least in 12c, NUMBER(1) can use 2 bytes...
– phil_w
Apr 19 '1...