soundex number

FunctionReturns a number that represents the sound of a string.GrammarSOUNDEX ( string-expression )ParametersThe string-expression string.UsageThe value of the SOUNDEX function of a string is based on the first letter and the next three consonants

-- Sentence skill -- Data Operations SELECT -- retrieve data rows and columns from database tables INSERT -- add new data rows to the database table DELETE -- DELETE data rows from a database table UPDATE -- UPDATE data in the database table -- Data

PL/SQL single-line functions and group functionsA function is a program that has 0 or more parameters and has a return value. Oracle built a series of functions in SQL that can be called SQL or PLFunctions are divided into two main categories:Single-

  -- Sentence skill 1. Data OperationsSelect -- retrieve data rows and columns from database tablesInsert -- add new data rows to the database tableDelete -- delete data rows from a database tableUpdate -- update data in the database table 2.

Comparison of common functions for SQL Server to Oracle 1. Absolute ValueS: Select ABS (-1) ValueO: Select ABS (-1) value from dual 2. INTEGER (large)S: Select ceiling (-1.001) ValueO: Select Ceil (-1.001) value from dual 3. Round (small)S: Select

String functionsstring comparison functionsIf the length of the result is greater than the maximum value of the Max_allowed_packet system variable, the return value of the string value function is null. See section 7.5.2, "Tuning server parameters."

String function string comparison function if the result length is greater than the maximum value of the max_allowed_packet system variable, the return value of the string value function is NULL. See section 7.5.2 "Adjust server Parameters ". String

Generally, the entire string is used as the operation object, for example: search for a substring in a substring, obtain a substring, insert a substring at a certain position in the substring, and delete a substring. Generally, the entire string is

Previously, I wanted to record some of the usual functions of SQL, but it has not been implemented ... Hey...Until today, the substring () function is used, and in C # The starting value of this method is 0, and the starting value in SQL is 1. Silly

Generally, the entire string is used as the operation object, for example: search for a substring in a substring, obtain a substring, insert a substring at a certain position in the substring, and delete a substring. The required and sufficient