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25 maj 2011 · Two options: Use the LIKE keyword, along with percent signs in the string. select * from table where field like '%a%' or field like '%b%'.
9 lut 2024 · SQL CONTAINS is used for full-text searches, allowing you to query databases for specific words, phrases, or patterns within text data. It's particularly useful for finding specific information in large text fields where the exact location of the data isn't known in advance.
A select_expression or where_definition in a SQL statement can consist of any expression using the functions described next. An expression that contains NULL always produces a NULL value unless otherwise indicated in the documentation for the operators and functions involved in the expression.
This section describes how the server recognizes whether the name of a built-in function is used as a function call or as an identifier, and how the server determines which function to use in cases when functions of different types exist with a given name.
A loadable function can be regarded as an external stored function. Stored functions share their namespace with loadable functions. See Section 11.2.5, “Function Name Parsing and Resolution”, for the rules describing how the server interprets references to different kinds of functions.
Introduction to MySQL WHERE clause. The WHERE clause allows you to specify a search condition for the rows returned by a query. The following shows the syntax of the WHERE clause: SELECT select_list FROM table_name WHERE search_condition; Code language: SQL (Structured Query Language) (sql)
This requirement enables the parser to distinguish whether the name is used in a function call or in nonfunction context. For further details on recognition of function names, see Section 11.2.5, “Function Name Parsing and Resolution”.
