{"id":25307,"date":"2024-03-16T04:43:16","date_gmt":"2024-03-16T04:43:16","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/"},"modified":"2024-03-22T05:51:24","modified_gmt":"2024-03-22T05:51:24","slug":"how-is-the-cast-function-used-in-oracle","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/","title":{"rendered":"How is the cast function used in Oracle?"},"content":{"rendered":"

The CAST function in Oracle is used to convert an expression into a specified data type. Its syntax is as follows:<\/p>\n

Convert the expression to the specified datatype.<\/p>\n

“Where expression is the expression to be converted, and datatype is the data type to be converted to.”<\/p>\n

I am sorry, I don’t understand what you are asking for.<\/p>\n

    \n
  1. Convert the expression of character type to a number type:
    \nSELECT CAST(‘123’ AS NUMBER) FROM dual;
    \nThe result is 123.<\/li>\n
  2. Convert date expression to character type:
    \nSELECT TO_CHAR(SYSDATE, ‘YYYY-MM-DD’) FROM dual;
    \nGives the current date in string format, such as ‘2022-01-01’.<\/li>\n
  3. Convert an expression of character type to a date type:
    \nSELECT CAST(‘2022-01-01’ AS DATE) FROM dual;
    \nThe result is a value of date type, which is the date ‘2022-01-01’.<\/li>\n<\/ol>\n

    It is important to note that the CAST function throws an exception when the conversion fails, so it is necessary to ensure that the expression and target data type are compatible when using it. Additionally, Oracle also provides other type conversion functions similar to the CAST function, such as TO_CHAR, TO_NUMBER, TO_DATE, etc. Choose the appropriate function based on specific requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"

    The CAST function in Oracle is used to convert an expression into a specified data type. Its syntax is as follows: Convert the expression to the specified datatype. “Where expression is the expression to be converted, and datatype is the data type to be converted to.” I am sorry, I don’t understand what you are […]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-25307","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow is the cast function used in Oracle? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How is the cast function used in Oracle?\" \/>\n<meta property=\"og:description\" content=\"The CAST function in Oracle is used to convert an expression into a specified data type. Its syntax is as follows: Convert the expression to the specified datatype. “Where expression is the expression to be converted, and datatype is the data type to be converted to.” I am sorry, I don’t understand what you are […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-16T04:43:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T05:51:24+00:00\" \/>\n<meta name=\"author\" content=\"Isabella Edwards\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Isabella Edwards\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/\"},\"author\":{\"name\":\"Isabella Edwards\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/5579144e23c225c8188167f3e3f888dd\"},\"headline\":\"How is the cast function used in Oracle?\",\"datePublished\":\"2024-03-16T04:43:16+00:00\",\"dateModified\":\"2024-03-22T05:51:24+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/\"},\"wordCount\":205,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-is-the-cast-function-used-in-oracle\/\",\"name\":\"How is the cast function used in Oracle? 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