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{
"id": "mysql",
"title": "মাইএসকিউএল",
"slug": "mysql",
"description": "মাইএসকিউএল(MySQL) হচ্ছে একটা ওপেন সোর্স রিলেশনাল ডাটাবেজ ম্যানেজমেন্ট সিস্টেম। নামের প্রথম অংশ \"My\" এর নামকরণ করা হয়েছে কো-ফাউন্ডার Michael Widenius মেয়ের নামে, আর SQL মানে হচ্ছে Structured Query Language",
"colorPref": "#00758f",
"contents": [
{
"title": "উবুন্টু তে MySQL সেটআপ",
"items": [
{
"definition": "প্রথমে উবুন্টু সিস্টেম আপডেট করুন",
"code": "sudo apt update"
},
{
"definition": "MySQL ইন্সটল করুন",
"code": "sudo apt install mysql-server"
},
{
"definition": "MySQL সিকিউরিটি ইন্সটল করুন",
"code": "sudo mysql_secure_installation"
}
]
},
{
"title": "মাইএসকিউএল এর প্রাথমিক কমান্ড সমুহ",
"items": [
{
"definition": "MySQL এর root ইউজারে অ্যাক্সেস করতে",
"code": "mysql -u root -p <your password>"
},
{
"definition": "ডাটাবেজ তৈরি করার জন্য",
"code": "CREATE DATABASE dbname;"
},
{
"definition": "নতুন তৈরি করা ডাটাবেজ নিয়ে কাজ করার জন্য",
"code": "USE dbname;"
},
{
"definition": "টেবিল তৈরি করার জন্য",
"code": "CREATE TABLE tableName;"
},
{
"definition": "এই নামে কোন টেবিল আছে কিনা চেক করে নতুন টেবিল তৈরি করা",
"code": "CREATE TABLE tableName IF NOT EXISTS;"
},
{
"definition": "কোন টেবিল ডিলেট করতে",
"code": "DROP TABLE tableName IF EXIST;"
},
{
"definition": "ডাটাবেজ ডিলেট করতে",
"code": "DROP DATABASE dbname IF EXIST;"
}
]
},
{
"title": "ডাটা টাইপ",
"items": [
{
"definition": "স্ট্রিং(০ - ২৫৫)",
"code": "CHAR"
},
{
"definition": "স্ট্রিং(০ - ২৫৫)",
"code": "VARCHAR"
},
{
"definition": "স্ট্রিং(০ - ২৫৫)",
"code": "TINYTEXT"
},
{
"definition": "স্ট্রিং(০ - ৬৫৫৩৫)",
"code": "TEXT"
},
{
"definition": "স্ট্রিং(০ - ৬৫৫৩৫)",
"code": "BLOB"
},
{
"definition": "স্ট্রিং(০ - ১৬৭৭৭২১৫)",
"code": "MEDIUMTEXT"
},
{
"definition": "স্ট্রিং(০ - ১৬৭৭৭২১৫)",
"code": "MEDIUMBLOB"
},
{
"definition": "স্ট্রিং(০ - ৪২৯৪৯৬৭২৯৫)",
"code": "LONGTEXT"
},
{
"definition": "স্ট্রিং(০ - ৪২৯৪৯৬৭২৯৫)",
"code": "LONGBLOB"
},
{
"definition": "ইন্টিজার(-১২৮ থেকে ১২৭)",
"code": "TINYINT"
},
{
"definition": "ইন্টিজার(-৩২৭৬৮ থেকে ৩২৭৬৭)",
"code": "SMALLINT"
},
{
"definition": "ইন্টিজার(-৮৩৮৮৬০৮ থেকে ৮৩৮৮৬০৭)",
"code": "MEDIUMINT"
},
{
"definition": "ইন্টিজার(-২১৪৭৪৮৩৬৪৮ থেকে ২১৪৭৪৮৩৬৪৭)",
"code": "INT"
},
{
"definition": "ইন্টিজার(-৯২২৩৩৭২০৩৬৮৫৪৭৭৫৮০৮ থেকে ৯২২৩৩৭২০৩৬৮৫৪৭৭৫৮০৭)",
"code": "BIGINT"
},
{
"definition": "ডেসিমল(২৩ ডিজিট)",
"code": "FLOAT"
},
{
"definition": "ডেসিমল(২৪ থেকে ৫৩ ডিজিট)",
"code": "DOUBLE"
},
{
"definition": "DOUBLE স্ট্রিং হিসেবে স্টোর হয়",
"code": "DECIMAL"
},
{
"definition": "বববব-মামা-দিদি",
"code": "DATE"
},
{
"definition": "বববব-মামা-দিদি ঘঘঃমিমিঃসেসে",
"code": "DATETIME"
},
{
"definition": "ববববমামাদিদিঘঘমিমিসেসে",
"code": "TIMESTAMP"
},
{
"definition": "ঘঘঃমিমিঃসেসে",
"code": "TIME"
},
{
"definition": "প্রিসেট অপশন",
"code": "ENUM"
},
{
"definition": "প্রিসেট অপশন সিলেক্ট",
"code": "SET"
},
{
"definition": "TINYINT(1)",
"code": "BOOLEAN"
}
]
},
{
"title": "গ্রুপিং ফাংশন",
"items": [
{
"code": "AVG"
},
{
"code": "BIT_AND"
},
{
"code": "BIT_OR"
},
{
"code": "COUNT"
},
{
"code": "GROUP_CONCAT"
},
{
"code": "MIN"
},
{
"code": "MAX"
},
{
"code": "STD"
},
{
"code": "STDDEV"
},
{
"code": "SUM"
},
{
"code": "VARIANCE"
}
]
},
{
"title": "গাণিতিক ফাংশন",
"items": [
{
"code": "ABS"
},
{
"code": "SIGN"
},
{
"code": "MOD"
},
{
"code": "FLOOR"
},
{
"code": "CEILING"
},
{
"code": "ROUND"
},
{
"code": "DIV"
},
{
"code": "EXP"
},
{
"code": "LN"
},
{
"code": "LOG"
},
{
"code": "LOG2"
},
{
"code": "LOG10"
},
{
"code": "POW"
},
{
"code": "POWER"
},
{
"code": "SQRT"
},
{
"code": "PI"
},
{
"code": "COS"
},
{
"code": "SIN"
},
{
"code": "TAN"
},
{
"code": "ACOS"
},
{
"code": "ASIN"
},
{
"code": "ATAN"
},
{
"code": "ATAN2"
},
{
"code": "COT"
},
{
"code": "RAND"
},
{
"code": "LEAST"
},
{
"code": "GREATEST"
},
{
"code": "DEGREES"
},
{
"code": "RADIANS"
},
{
"code": "TRUNCATE"
}
]
},
{
"title": "স্ট্রিং ফাংশন",
"items": [
{
"code": "ASCII"
},
{
"code": "ORD"
},
{
"code": "CONV"
},
{
"code": "BIN"
},
{
"code": "OCT"
},
{
"code": "HEX"
},
{
"code": "CHAR"
},
{
"code": "CONCAT"
},
{
"code": "CONCAT_WS"
},
{
"code": "LENGTH"
},
{
"code": "CHAR_LENGTH"
},
{
"code": "BIT_LENGTH"
},
{
"code": "LOCATE"
},
{
"code": "INSTR"
},
{
"code": "LPAD"
},
{
"code": "RPAD"
},
{
"code": "LEFT"
},
{
"code": "RIGHT"
},
{
"code": "SUBSTRING"
},
{
"code": "MID"
},
{
"code": "SUBSTRING_INDEX"
},
{
"code": "LTRIM"
},
{
"code": "RTRIM"
},
{
"code": "TRIM"
},
{
"code": "SOUNDEX"
},
{
"code": "SPACE"
},
{
"code": "REPLACE"
},
{
"code": "REPEAT"
},
{
"code": "REVERSE"
},
{
"code": "INSERT"
},
{
"code": "ELT"
},
{
"code": "FIELD"
},
{
"code": "LCASE"
},
{
"code": "UCASE"
},
{
"code": "LOAD_FILE"
},
{
"code": "QUOTE"
}
]
},
{
"title": "সময়ের ফাংশন",
"items": [
{
"code": "DAYOFWEEK"
},
{
"code": "WEEKDAY"
},
{
"code": "DAYOFMONTH"
},
{
"code": "DAYOFYEAR"
},
{
"code": "MONTH"
},
{
"code": "DAYNAME"
},
{
"code": "MONTHNAME"
},
{
"code": "QUARTER"
},
{
"code": "WEEK"
},
{
"code": "YEAR"
},
{
"code": "YEARWEEK"
},
{
"code": "HOUR"
},
{
"code": "MINUTE"
},
{
"code": "SECOND"
},
{
"code": "PERIOD_ADD"
},
{
"code": "PERIOD_DIFF"
},
{
"code": "DATE_ADD"
},
{
"code": "DATE_SUB"
},
{
"code": "ADDDATE"
},
{
"code": "SUBDATE"
},
{
"code": "EXTRACT"
},
{
"code": "TO_DAYS"
},
{
"code": "FROM_DAYS"
},
{
"code": "DATE_FORMAT"
},
{
"code": "TIME_FORMAT"
},
{
"code": "CURRENT_DATE"
},
{
"code": "CURRENT_TIME"
},
{
"code": "NOW"
},
{
"code": "SYSDATE"
},
{
"code": "UNIX_TIMESTAMP"
},
{
"code": "FROM_UNIXTIME"
},
{
"code": "SEC_TO_TIME"
},
{
"code": "TIME_TO_SEC"
}
]
},
{
"title": "কন্ট্রোল ফ্লো ফাংশন",
"items": [
{
"code": "IF"
},
{
"code": "NULLIF"
},
{
"code": "IFNULL"
}
]
},
{
"title": "অন্যান্য ফাংশন",
"items": [
{
"code": "BIT_COUNT"
},
{
"code": "DATABASE"
},
{
"code": "USER"
},
{
"code": "SYSTEM_USER"
},
{
"code": "SESSION_USER"
},
{
"code": "CURRENT_USER"
},
{
"code": "PASSWORD"
},
{
"code": "OLD_PASSWORD"
},
{
"code": "ENCRYPT"
},
{
"code": "DECODE"
},
{
"code": "MD5"
},
{
"code": "SHA1"
},
{
"code": "AES_ENCRYPT"
},
{
"code": "AES_DECRYPT"
},
{
"code": "DES_ENCRYPT"
},
{
"code": "DES_DECRYPT"
},
{
"code": "LAST_INSERT_ID"
},
{
"code": "FORMAT"
},
{
"code": "VERSION"
},
{
"code": "CONNECTION_ID"
},
{
"code": "GET_LOCK"
},
{
"code": "RELEASE_LOCK"
},
{
"code": "IS_FREE_LOCK"
},
{
"code": "BENCHMARK"
},
{
"code": "INET_NTOA"
},
{
"code": "INET_ATON"
},
{
"code": "FOUND_ROWS"
},
{
"code": "STRCMP"
}
]
}
]
}
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