THE DATA DIALOGUE
COMPLETE
SQL
Guide
Topic Wise Functions
1:
THE DATA DIALOGUE
Basic SQL Syntax
▪ SQL keywords
▪ Data types
▪ Operators
▪ SQL statements
▪
▪
▪
▪
SELECT
INSERT
UPDATE
DELETE
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Data Definition
Language (DDL)
▪ CREATE TABLE
▪ ALTER TABLE
▪ DROP TABLE
▪ TRUNCATE TABLE
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THE DATA DIALOGUE
Data Manipulation
Language (DML)
▪ SELECT statement (SELECT,
FROM, WHERE, ORDER BY,
GROUP BY, HAVING, JOINs)
▪ INSERT statement
▪ UPDATE statement
▪ DELETE statement
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THE DATA DIALOGUE
Aggregate Functions
▪ SUM, AVG, COUNT, MIN, MAX
▪ GROUP BY clause
▪ HAVING clause
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Data Constraints
▪ Primary Key
▪ Foreign Key
▪ Unique
▪ NOT NULL
▪ CHECK
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Joins
▪ INNER JOIN
▪ LEFT JOIN
▪ RIGHT JOIN
▪ FULL OUTER JOIN
▪ SELF JOIN
▪ CROSS JOIN
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Subqueries
▪ Types of subqueries (scalar,
column, row, table)
▪ Nested subqueries
▪ Correlated subqueries
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Advanced SQL
Functions
▪ String functions
▪ CONCAT, LENGTH, SUBSTRING,
REPLACE, UPPER, LOWER
▪ Date and time functions
▪ DATE, TIME, TIMESTAMP, DATEPART,
DATEADD
▪ Numeric functions:
▪ ROUND, CEILING, FLOOR, ABS, MOD
▪ Conditional functions:
▪ CASE, COALESCE, NULLIF
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THE DATA DIALOGUE
Views
▪ Creating views
▪ Modifying views
▪ Dropping views
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THE DATA DIALOGUE
Indexes
▪ Creating indexes
▪ CREATE INDEX
▪ Using indexes for query
optimization
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Transactions
▪ ACID properties
▪ Transaction management:
▪ BEGIN, COMMIT, ROLLBACK,
SAVEPOINT
▪ Transaction isolation levels
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Data Integrity and
Security
▪ Data integrity constraint
▪ Referential integrity, entity integrity
▪ GRANT and REVOKE
statements (granting and
revoking permissions)
▪ Database security best
practices
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THE DATA DIALOGUE
Stored Procedures and
Functions
▪ Creating stored procedures
▪ CREATE PROCEDURE
▪ Executing stored procedures
▪ EXEC
▪ Creating functions
▪ Using functions in queries
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THE DATA DIALOGUE
Performance
Optimization
▪ Query optimization
techniques
▪ Using indexes, optimizing joins,
reducing subqueries
▪ Performance tuning best
practices
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THE DATA DIALOGUE
Advanced SQL
Concepts
▪ Recursive queries
▪ Pivot and unpivot operations
▪ Window functions:
▪ Row_number, rank, dense_rank, lead
& lag
▪ CTEs (Common Table
Expressions)
▪ Dynamic SQL
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THE DATA DIALOGUE
Schema Management
▪ Creating schemas
▪ CREATE SCHEMA
▪ Altering schemas
▪ ALTER SCHEMA
▪ Dropping schemas
▪ DROP SCHEMA
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THE DATA DIALOGUE
Sequences and
Identity Columns
▪ Creating sequences/identity
columns
▪ Using sequences/identity
columns
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THE DATA DIALOGUE
Triggers
▪ Creating triggers
▪ CREATE TRIGGER
▪ Using triggers
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THE DATA DIALOGUE
Error Handling
▪ TRY-CATCH blocks
▪ Raising custom exceptions
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THE DATA DIALOGUE
Advanced SQL Data
Types
▪ BLOB
▪ CLOB
▪ ENUM
▪ SET, etc.
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Partitioning
▪ Creating partitions
▪ PARTITION
▪ Using partitions
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Regular Expressions
▪ Using REGEXP for pattern matching
in queries
▪ . (Dot): Matches any single character, except
newline characters
▪ * (Asterisk): Matches zero or more of the
preceding character or group
▪ + (Plus): Matches one or more of the
preceding character or group
▪ ? (Question mark): Matches zero or one of
the preceding character or group
▪ ^ (Caret): Matches the start of a string
without consuming any characters
▪ $ (Dollar): Matches the end of a string
without consuming any characters
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THE DATA DIALOGUE
Temporal Tables
▪ Creating temporal tables
▪ E.g. GENERATED ALWAYS
▪ Using temporal tables
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Cursors
▪ Understanding and using
cursors
▪
▪
▪
▪
DECLARE
OPEN
CLOSE
DEALLOCATE
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THE DATA DIALOGUE
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