Search results
1 cze 2021 · Standard SQL Functions Cheat Sheet. TEXT FUNCTIONS. CONCATENATION. Use the || operator to concatenate two strings: SELECT 'Hi ' || 'there!'; -- result: Hi there! Remember that you can concatenate only character strings using. ||. Use this trick for numbers: SELECT '' || 4 || 2;
Check the documentation for your specific database. LIKE OPERATOR – PATTERN MATCHING. Use the _ character to replace any single character. Use the % character to replace any number of characters (including 0 characters). Fetch all names that start with any letter followed by 'atherine': SELECT name. FROM names. WHERE name LIKE '_atherine';
Whether you need a quick reference for major SQL concepts before an interview, or you want to level-up your existing SQL skills, our SQL cheat sheet is the ideal starting point. Plus, we’ve broken it down into 11 essential SQL topics to help you get the most from this SQL query cheat sheet.
Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now » Examples in Each Chapter
SQL statements are the means by which programs and users access data in an Oracle database. The sections that follow show each SQL statement and its related syntax.
SQL statements are the means by which programs and users access data in an Oracle database. Table 1–1 shows each SQL statement and its related syntax. Refer to Chapter 5, "Subclauses" for the syntax of the subclauses found in the following table. See Also: Oracle Database SQL Reference for detailed information about Oracle SQL
Run data manipulation statements (DML) in Oracle Database 11g. Run data definition language (DDL) statements to create schema objects. Identify the major structural components of Oracle Database 11g. Retrieve data from tables. Create reports of sorted and restricted data.
