diff --git a/README.md b/README.md index a1f5c69..362a94f 100644 --- a/README.md +++ b/README.md @@ -251,3 +251,89 @@ Following are some of the most commonly used constraints available in SQL − ### SQL DISTINCT Clause SELECT DISTINCT column1, column2....columnN FROM table_name; + +### SQL WHERE Clause + SELECT column1, column2....columnN + FROM table_name + WHERE CONDITION; +SQL AND/OR Clause +SELECT column1, column2....columnN +FROM table_name +WHERE CONDITION-1 {AND|OR} CONDITION-2; +SQL IN Clause +SELECT column1, column2....columnN +FROM table_name +WHERE column_name IN (val-1, val-2,...val-N); +SQL BETWEEN Clause +SELECT column1, column2....columnN +FROM table_name +WHERE column_name BETWEEN val-1 AND val-2; +SQL LIKE Clause +SELECT column1, column2....columnN +FROM table_name +WHERE column_name LIKE { PATTERN }; +SQL ORDER BY Clause +SELECT column1, column2....columnN +FROM table_name +WHERE CONDITION +ORDER BY column_name {ASC|DESC}; +SQL GROUP BY Clause +SELECT SUM(column_name) +FROM table_name +WHERE CONDITION +GROUP BY column_name; +SQL COUNT Clause +SELECT COUNT(column_name) +FROM table_name +WHERE CONDITION; +SQL HAVING Clause +SELECT SUM(column_name) +FROM table_name +WHERE CONDITION +GROUP BY column_name +HAVING (arithematic function condition); +SQL CREATE TABLE Statement +CREATE TABLE table_name( +column1 datatype, +column2 datatype, +column3 datatype, +..... +columnN datatype, +PRIMARY KEY( one or more columns ) +); +SQL DROP TABLE Statement +DROP TABLE table_name; +SQL CREATE INDEX Statement +CREATE UNIQUE INDEX index_name +ON table_name ( column1, column2,...columnN); +SQL DROP INDEX Statement +ALTER TABLE table_name +DROP INDEX index_name; +SQL DESC Statement +DESC table_name; +SQL TRUNCATE TABLE Statement +TRUNCATE TABLE table_name; +SQL ALTER TABLE Statement +ALTER TABLE table_name {ADD|DROP|MODIFY} column_name {data_ype}; +SQL ALTER TABLE Statement (Rename) +ALTER TABLE table_name RENAME TO new_table_name; +SQL INSERT INTO Statement +INSERT INTO table_name( column1, column2....columnN) +VALUES ( value1, value2....valueN); +SQL UPDATE Statement +UPDATE table_name +SET column1 = value1, column2 = value2....columnN=valueN +[ WHERE CONDITION ]; +SQL DELETE Statement +DELETE FROM table_name +WHERE {CONDITION}; +SQL CREATE DATABASE Statement +CREATE DATABASE database_name; +SQL DROP DATABASE Statement +DROP DATABASE database_name; +SQL USE Statement +USE database_name; +SQL COMMIT Statement +COMMIT; +SQL ROLLBACK Statement +ROLLBACK;