The standard SQL string functions are described at: SQL String Functions and Operators. There's a substring function that can extract contents directly, without having to nest function calls. It's …

2012年10月5日 · UPDATE Name SET ref_id = CASE WHEN CHARINDEX('-',full_id) = 4 THEN SUBSTRING(full_id,1,3) ELSE NULL END That will set the ref_id column for all rows using the …

2012年10月2日 · 0 down vote favorite I have several occurrences of differences strings in the columns, like this example 'dsasdasdsd'+'ewewewew'+'45454545'+(avg('uuuuuuu')) I need to …

2015年2月18日 · If you're updating a column in the same table though, rather than using a PL/SQL into clause, you need an update not a select: UPDATE marketing SET username = …

2023年5月31日 · If your SQL dialect supports CHARINDEX, it's a lot easier to use it instead: SELECT * FROM MyTable WHERE CHARINDEX('word1', Column1) > 0 AND …

2009年4月10日 · It can even be enhanced further to also allow you to count spaces or substrings with leading/trailing spaces by replacing LEN with DATALENGTH like this: …

2012年3月20日 · I have a table A with the string-column a and a table B with the string-column b. a is a substring of b. Now I want to join the the two tables on a and b. Is this possible? I want …

2012年9月21日 · It's cunningly named SubString. as in. Select Substring('KLPI_2012_CBBE2_E_12704_2012-09-21_13_59_52',6,18) If you want to find it …

2014年5月29日 · Use of substring in SQL. 4. ORACLE SQL: Build a CASE statement with SUBSTR. 0.

2015年6月9日 · Convert access mid to sql substring. 1. SQL Server substring w/o custom functions. 0. T-SQL: SubString of ...